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c573e2c7ea
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130552 91177308-0d34-0410-b5e6-96231b3b80d8
3430 lines
123 KiB
TableGen
3430 lines
123 KiB
TableGen
//===- ARMInstrThumb2.td - Thumb2 support for ARM -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes the Thumb2 instruction set.
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//
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//===----------------------------------------------------------------------===//
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// IT block predicate field
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def it_pred : Operand<i32> {
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let PrintMethod = "printMandatoryPredicateOperand";
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}
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// IT block condition mask
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def it_mask : Operand<i32> {
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let PrintMethod = "printThumbITMask";
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}
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// Shifted operands. No register controlled shifts for Thumb2.
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// Note: We do not support rrx shifted operands yet.
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def t2_so_reg : Operand<i32>, // reg imm
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ComplexPattern<i32, 2, "SelectT2ShifterOperandReg",
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[shl,srl,sra,rotr]> {
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let EncoderMethod = "getT2SORegOpValue";
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let PrintMethod = "printT2SOOperand";
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let MIOperandInfo = (ops rGPR, i32imm);
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}
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// t2_so_imm_not_XFORM - Return the complement of a t2_so_imm value
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def t2_so_imm_not_XFORM : SDNodeXForm<imm, [{
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return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
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}]>;
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// t2_so_imm_neg_XFORM - Return the negation of a t2_so_imm value
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def t2_so_imm_neg_XFORM : SDNodeXForm<imm, [{
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return CurDAG->getTargetConstant(-((int)N->getZExtValue()), MVT::i32);
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}]>;
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// t2_so_imm - Match a 32-bit immediate operand, which is an
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// 8-bit immediate rotated by an arbitrary number of bits, or an 8-bit
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// immediate splatted into multiple bytes of the word.
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def t2_so_imm : Operand<i32>, ImmLeaf<i32, [{
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return ARM_AM::getT2SOImmVal(Imm) != -1;
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}]> {
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let EncoderMethod = "getT2SOImmOpValue";
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}
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// t2_so_imm_not - Match an immediate that is a complement
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// of a t2_so_imm.
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def t2_so_imm_not : Operand<i32>,
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PatLeaf<(imm), [{
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return ARM_AM::getT2SOImmVal(~((uint32_t)N->getZExtValue())) != -1;
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}], t2_so_imm_not_XFORM>;
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// t2_so_imm_neg - Match an immediate that is a negation of a t2_so_imm.
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def t2_so_imm_neg : Operand<i32>,
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PatLeaf<(imm), [{
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return ARM_AM::getT2SOImmVal(-((uint32_t)N->getZExtValue())) != -1;
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}], t2_so_imm_neg_XFORM>;
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/// imm1_31 predicate - True if the 32-bit immediate is in the range [1,31].
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def imm1_31 : ImmLeaf<i32, [{
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return (int32_t)Imm >= 1 && (int32_t)Imm < 32;
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}]>;
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/// imm0_4095 predicate - True if the 32-bit immediate is in the range [0.4095].
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def imm0_4095 : Operand<i32>,
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ImmLeaf<i32, [{
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return Imm >= 0 && Imm < 4096;
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}]>;
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def imm0_4095_neg : PatLeaf<(i32 imm), [{
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return (uint32_t)(-N->getZExtValue()) < 4096;
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}], imm_neg_XFORM>;
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def imm0_255_neg : PatLeaf<(i32 imm), [{
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return (uint32_t)(-N->getZExtValue()) < 255;
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}], imm_neg_XFORM>;
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def imm0_255_not : PatLeaf<(i32 imm), [{
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return (uint32_t)(~N->getZExtValue()) < 255;
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}], imm_comp_XFORM>;
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def lo5AllOne : PatLeaf<(i32 imm), [{
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// Returns true if all low 5-bits are 1.
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return (((uint32_t)N->getZExtValue()) & 0x1FUL) == 0x1FUL;
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}]>;
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// Define Thumb2 specific addressing modes.
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// t2addrmode_imm12 := reg + imm12
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def t2addrmode_imm12 : Operand<i32>,
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ComplexPattern<i32, 2, "SelectT2AddrModeImm12", []> {
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let PrintMethod = "printAddrModeImm12Operand";
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let EncoderMethod = "getAddrModeImm12OpValue";
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let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
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let ParserMatchClass = MemMode5AsmOperand;
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}
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// t2ldrlabel := imm12
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def t2ldrlabel : Operand<i32> {
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let EncoderMethod = "getAddrModeImm12OpValue";
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}
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// ADR instruction labels.
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def t2adrlabel : Operand<i32> {
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let EncoderMethod = "getT2AdrLabelOpValue";
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}
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// t2addrmode_imm8 := reg +/- imm8
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def t2addrmode_imm8 : Operand<i32>,
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ComplexPattern<i32, 2, "SelectT2AddrModeImm8", []> {
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let PrintMethod = "printT2AddrModeImm8Operand";
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let EncoderMethod = "getT2AddrModeImm8OpValue";
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let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
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let ParserMatchClass = MemMode5AsmOperand;
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}
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def t2am_imm8_offset : Operand<i32>,
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ComplexPattern<i32, 1, "SelectT2AddrModeImm8Offset",
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[], [SDNPWantRoot]> {
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let PrintMethod = "printT2AddrModeImm8OffsetOperand";
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let EncoderMethod = "getT2AddrModeImm8OffsetOpValue";
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let ParserMatchClass = MemMode5AsmOperand;
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}
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// t2addrmode_imm8s4 := reg +/- (imm8 << 2)
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def t2addrmode_imm8s4 : Operand<i32> {
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let PrintMethod = "printT2AddrModeImm8s4Operand";
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let EncoderMethod = "getT2AddrModeImm8s4OpValue";
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let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
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let ParserMatchClass = MemMode5AsmOperand;
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}
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def t2am_imm8s4_offset : Operand<i32> {
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let PrintMethod = "printT2AddrModeImm8s4OffsetOperand";
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}
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// t2addrmode_so_reg := reg + (reg << imm2)
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def t2addrmode_so_reg : Operand<i32>,
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ComplexPattern<i32, 3, "SelectT2AddrModeSoReg", []> {
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let PrintMethod = "printT2AddrModeSoRegOperand";
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let EncoderMethod = "getT2AddrModeSORegOpValue";
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let MIOperandInfo = (ops GPR:$base, rGPR:$offsreg, i32imm:$offsimm);
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let ParserMatchClass = MemMode5AsmOperand;
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}
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// t2addrmode_reg := reg
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// Used by load/store exclusive instructions. Useful to enable right assembly
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// parsing and printing. Not used for any codegen matching.
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//
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def t2addrmode_reg : Operand<i32> {
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let PrintMethod = "printAddrMode7Operand";
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let MIOperandInfo = (ops tGPR);
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let ParserMatchClass = MemMode7AsmOperand;
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}
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//===----------------------------------------------------------------------===//
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// Multiclass helpers...
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//
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class T2OneRegImm<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<12> imm;
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let Inst{11-8} = Rd;
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let Inst{26} = imm{11};
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let Inst{14-12} = imm{10-8};
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let Inst{7-0} = imm{7-0};
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}
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class T2sOneRegImm<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2sI<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<12> imm;
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let Inst{11-8} = Rd;
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let Inst{26} = imm{11};
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let Inst{14-12} = imm{10-8};
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let Inst{7-0} = imm{7-0};
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}
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class T2OneRegCmpImm<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rn;
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bits<12> imm;
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let Inst{19-16} = Rn;
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let Inst{26} = imm{11};
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let Inst{14-12} = imm{10-8};
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let Inst{7-0} = imm{7-0};
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}
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class T2OneRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<12> ShiftedRm;
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let Inst{11-8} = Rd;
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let Inst{3-0} = ShiftedRm{3-0};
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let Inst{5-4} = ShiftedRm{6-5};
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let Inst{14-12} = ShiftedRm{11-9};
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let Inst{7-6} = ShiftedRm{8-7};
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}
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class T2sOneRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2sI<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<12> ShiftedRm;
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let Inst{11-8} = Rd;
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let Inst{3-0} = ShiftedRm{3-0};
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let Inst{5-4} = ShiftedRm{6-5};
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let Inst{14-12} = ShiftedRm{11-9};
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let Inst{7-6} = ShiftedRm{8-7};
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}
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class T2OneRegCmpShiftedReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rn;
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bits<12> ShiftedRm;
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let Inst{19-16} = Rn;
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let Inst{3-0} = ShiftedRm{3-0};
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let Inst{5-4} = ShiftedRm{6-5};
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let Inst{14-12} = ShiftedRm{11-9};
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let Inst{7-6} = ShiftedRm{8-7};
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}
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class T2TwoReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rm;
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let Inst{11-8} = Rd;
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let Inst{3-0} = Rm;
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}
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class T2sTwoReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2sI<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rm;
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let Inst{11-8} = Rd;
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let Inst{3-0} = Rm;
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}
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class T2TwoRegCmp<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rn;
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bits<4> Rm;
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let Inst{19-16} = Rn;
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let Inst{3-0} = Rm;
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}
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class T2TwoRegImm<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<12> imm;
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let Inst{11-8} = Rd;
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let Inst{19-16} = Rn;
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let Inst{26} = imm{11};
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let Inst{14-12} = imm{10-8};
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let Inst{7-0} = imm{7-0};
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}
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class T2sTwoRegImm<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2sI<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<12> imm;
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let Inst{11-8} = Rd;
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let Inst{19-16} = Rn;
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let Inst{26} = imm{11};
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let Inst{14-12} = imm{10-8};
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let Inst{7-0} = imm{7-0};
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}
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class T2TwoRegShiftImm<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rm;
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bits<5> imm;
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let Inst{11-8} = Rd;
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let Inst{3-0} = Rm;
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let Inst{14-12} = imm{4-2};
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let Inst{7-6} = imm{1-0};
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}
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class T2sTwoRegShiftImm<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2sI<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rm;
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bits<5> imm;
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let Inst{11-8} = Rd;
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let Inst{3-0} = Rm;
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let Inst{14-12} = imm{4-2};
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let Inst{7-6} = imm{1-0};
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}
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class T2ThreeReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<4> Rm;
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let Inst{11-8} = Rd;
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let Inst{19-16} = Rn;
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let Inst{3-0} = Rm;
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}
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class T2sThreeReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2sI<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<4> Rm;
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let Inst{11-8} = Rd;
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let Inst{19-16} = Rn;
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let Inst{3-0} = Rm;
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}
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class T2TwoRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<12> ShiftedRm;
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let Inst{11-8} = Rd;
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let Inst{19-16} = Rn;
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let Inst{3-0} = ShiftedRm{3-0};
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let Inst{5-4} = ShiftedRm{6-5};
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let Inst{14-12} = ShiftedRm{11-9};
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let Inst{7-6} = ShiftedRm{8-7};
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}
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class T2sTwoRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2sI<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<12> ShiftedRm;
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let Inst{11-8} = Rd;
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let Inst{19-16} = Rn;
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let Inst{3-0} = ShiftedRm{3-0};
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let Inst{5-4} = ShiftedRm{6-5};
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let Inst{14-12} = ShiftedRm{11-9};
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let Inst{7-6} = ShiftedRm{8-7};
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}
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class T2FourReg<dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> Rd;
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bits<4> Rn;
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bits<4> Rm;
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bits<4> Ra;
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let Inst{19-16} = Rn;
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let Inst{15-12} = Ra;
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let Inst{11-8} = Rd;
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let Inst{3-0} = Rm;
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}
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class T2MulLong<bits<3> opc22_20, bits<4> opc7_4,
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dag oops, dag iops, InstrItinClass itin,
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string opc, string asm, list<dag> pattern>
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: T2I<oops, iops, itin, opc, asm, pattern> {
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bits<4> RdLo;
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bits<4> RdHi;
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bits<4> Rn;
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bits<4> Rm;
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let Inst{31-23} = 0b111110111;
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let Inst{22-20} = opc22_20;
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let Inst{19-16} = Rn;
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let Inst{15-12} = RdLo;
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let Inst{11-8} = RdHi;
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let Inst{7-4} = opc7_4;
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let Inst{3-0} = Rm;
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}
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/// T2I_un_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns for a
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/// unary operation that produces a value. These are predicable and can be
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/// changed to modify CPSR.
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multiclass T2I_un_irs<bits<4> opcod, string opc,
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InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
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PatFrag opnode, bit Cheap = 0, bit ReMat = 0> {
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// shifted imm
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def i : T2sOneRegImm<(outs rGPR:$Rd), (ins t2_so_imm:$imm), iii,
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opc, "\t$Rd, $imm",
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[(set rGPR:$Rd, (opnode t2_so_imm:$imm))]> {
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let isAsCheapAsAMove = Cheap;
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let isReMaterializable = ReMat;
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let Inst{31-27} = 0b11110;
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let Inst{25} = 0;
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let Inst{24-21} = opcod;
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let Inst{19-16} = 0b1111; // Rn
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let Inst{15} = 0;
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}
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// register
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def r : T2sTwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm), iir,
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|
opc, ".w\t$Rd, $Rm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def s : T2sOneRegShiftedReg<(outs rGPR:$Rd), (ins t2_so_reg:$ShiftedRm), iis,
|
|
opc, ".w\t$Rd, $ShiftedRm",
|
|
[(set rGPR:$Rd, (opnode t2_so_reg:$ShiftedRm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
}
|
|
}
|
|
|
|
/// T2I_bin_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns for a
|
|
/// binary operation that produces a value. These are predicable and can be
|
|
/// changed to modify CPSR.
|
|
multiclass T2I_bin_irs<bits<4> opcod, string opc,
|
|
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
|
|
PatFrag opnode, bit Commutable = 0, string wide = ""> {
|
|
// shifted imm
|
|
def ri : T2sTwoRegImm<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm), iii,
|
|
opc, "\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_imm:$imm))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{15} = 0;
|
|
}
|
|
// register
|
|
def rr : T2sThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), iir,
|
|
opc, !strconcat(wide, "\t$Rd, $Rn, $Rm"),
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, rGPR:$Rm))]> {
|
|
let isCommutable = Commutable;
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2sTwoRegShiftedReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm), iis,
|
|
opc, !strconcat(wide, "\t$Rd, $Rn, $ShiftedRm"),
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_reg:$ShiftedRm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
}
|
|
}
|
|
|
|
/// T2I_bin_w_irs - Same as T2I_bin_irs except these operations need
|
|
// the ".w" prefix to indicate that they are wide.
|
|
multiclass T2I_bin_w_irs<bits<4> opcod, string opc,
|
|
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
|
|
PatFrag opnode, bit Commutable = 0> :
|
|
T2I_bin_irs<opcod, opc, iii, iir, iis, opnode, Commutable, ".w">;
|
|
|
|
/// T2I_rbin_is - Same as T2I_bin_irs except the order of operands are
|
|
/// reversed. The 'rr' form is only defined for the disassembler; for codegen
|
|
/// it is equivalent to the T2I_bin_irs counterpart.
|
|
multiclass T2I_rbin_irs<bits<4> opcod, string opc, PatFrag opnode> {
|
|
// shifted imm
|
|
def ri : T2sTwoRegImm<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm), IIC_iALUi,
|
|
opc, ".w\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (opnode t2_so_imm:$imm, rGPR:$Rn))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{15} = 0;
|
|
}
|
|
// register
|
|
def rr : T2sThreeReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iALUr,
|
|
opc, "\t$Rd, $Rn, $Rm",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2sTwoRegShiftedReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm),
|
|
IIC_iALUsir, opc, "\t$Rd, $Rn, $ShiftedRm",
|
|
[(set rGPR:$Rd, (opnode t2_so_reg:$ShiftedRm, rGPR:$Rn))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
}
|
|
}
|
|
|
|
/// T2I_bin_s_irs - Similar to T2I_bin_irs except it sets the 's' bit so the
|
|
/// instruction modifies the CPSR register.
|
|
let isCodeGenOnly = 1, Defs = [CPSR] in {
|
|
multiclass T2I_bin_s_irs<bits<4> opcod, string opc,
|
|
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
|
|
PatFrag opnode, bit Commutable = 0> {
|
|
// shifted imm
|
|
def ri : T2TwoRegImm<
|
|
(outs rGPR:$Rd), (ins GPR:$Rn, t2_so_imm:$imm), iii,
|
|
!strconcat(opc, "s"), ".w\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (opnode GPR:$Rn, t2_so_imm:$imm))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{15} = 0;
|
|
}
|
|
// register
|
|
def rr : T2ThreeReg<
|
|
(outs rGPR:$Rd), (ins GPR:$Rn, rGPR:$Rm), iir,
|
|
!strconcat(opc, "s"), ".w\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode GPR:$Rn, rGPR:$Rm))]> {
|
|
let isCommutable = Commutable;
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2TwoRegShiftedReg<
|
|
(outs rGPR:$Rd), (ins GPR:$Rn, t2_so_reg:$ShiftedRm), iis,
|
|
!strconcat(opc, "s"), ".w\t$Rd, $Rn, $ShiftedRm",
|
|
[(set rGPR:$Rd, (opnode GPR:$Rn, t2_so_reg:$ShiftedRm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
}
|
|
}
|
|
}
|
|
|
|
/// T2I_bin_ii12rs - Defines a set of (op reg, {so_imm|imm0_4095|r|so_reg})
|
|
/// patterns for a binary operation that produces a value.
|
|
multiclass T2I_bin_ii12rs<bits<3> op23_21, string opc, PatFrag opnode,
|
|
bit Commutable = 0> {
|
|
// shifted imm
|
|
// The register-immediate version is re-materializable. This is useful
|
|
// in particular for taking the address of a local.
|
|
let isReMaterializable = 1 in {
|
|
def ri : T2sTwoRegImm<
|
|
(outs rGPR:$Rd), (ins GPR:$Rn, t2_so_imm:$imm), IIC_iALUi,
|
|
opc, ".w\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (opnode GPR:$Rn, t2_so_imm:$imm))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24} = 1;
|
|
let Inst{23-21} = op23_21;
|
|
let Inst{15} = 0;
|
|
}
|
|
}
|
|
// 12-bit imm
|
|
def ri12 : T2I<
|
|
(outs rGPR:$Rd), (ins GPR:$Rn, imm0_4095:$imm), IIC_iALUi,
|
|
!strconcat(opc, "w"), "\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (opnode GPR:$Rn, imm0_4095:$imm))]> {
|
|
bits<4> Rd;
|
|
bits<4> Rn;
|
|
bits<12> imm;
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = imm{11};
|
|
let Inst{25-24} = 0b10;
|
|
let Inst{23-21} = op23_21;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15} = 0;
|
|
let Inst{14-12} = imm{10-8};
|
|
let Inst{11-8} = Rd;
|
|
let Inst{7-0} = imm{7-0};
|
|
}
|
|
// register
|
|
def rr : T2sThreeReg<(outs rGPR:$Rd), (ins GPR:$Rn, rGPR:$Rm), IIC_iALUr,
|
|
opc, ".w\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode GPR:$Rn, rGPR:$Rm))]> {
|
|
let isCommutable = Commutable;
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24} = 1;
|
|
let Inst{23-21} = op23_21;
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2sTwoRegShiftedReg<
|
|
(outs rGPR:$Rd), (ins GPR:$Rn, t2_so_reg:$ShiftedRm),
|
|
IIC_iALUsi, opc, ".w\t$Rd, $Rn, $ShiftedRm",
|
|
[(set rGPR:$Rd, (opnode GPR:$Rn, t2_so_reg:$ShiftedRm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24} = 1;
|
|
let Inst{23-21} = op23_21;
|
|
}
|
|
}
|
|
|
|
/// T2I_adde_sube_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns
|
|
/// for a binary operation that produces a value and use the carry
|
|
/// bit. It's not predicable.
|
|
let Uses = [CPSR] in {
|
|
multiclass T2I_adde_sube_irs<bits<4> opcod, string opc, PatFrag opnode,
|
|
bit Commutable = 0> {
|
|
// shifted imm
|
|
def ri : T2sTwoRegImm<(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm),
|
|
IIC_iALUi, opc, "\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_imm:$imm))]>,
|
|
Requires<[IsThumb2]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{15} = 0;
|
|
}
|
|
// register
|
|
def rr : T2sThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iALUr,
|
|
opc, ".w\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, rGPR:$Rm))]>,
|
|
Requires<[IsThumb2]> {
|
|
let isCommutable = Commutable;
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2sTwoRegShiftedReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm),
|
|
IIC_iALUsi, opc, ".w\t$Rd, $Rn, $ShiftedRm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_reg:$ShiftedRm))]>,
|
|
Requires<[IsThumb2]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Carry setting variants
|
|
// NOTE: CPSR def omitted because it will be handled by the custom inserter.
|
|
let usesCustomInserter = 1 in {
|
|
multiclass T2I_adde_sube_s_irs<PatFrag opnode, bit Commutable = 0> {
|
|
// shifted imm
|
|
def ri : t2PseudoInst<(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm),
|
|
Size4Bytes, IIC_iALUi,
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_imm:$imm))]>;
|
|
// register
|
|
def rr : t2PseudoInst<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm),
|
|
Size4Bytes, IIC_iALUr,
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, rGPR:$Rm))]> {
|
|
let isCommutable = Commutable;
|
|
}
|
|
// shifted register
|
|
def rs : t2PseudoInst<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm),
|
|
Size4Bytes, IIC_iALUsi,
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_reg:$ShiftedRm))]>;
|
|
}
|
|
}
|
|
|
|
/// T2I_rbin_s_is - Same as T2I_rbin_irs except sets 's' bit and the register
|
|
/// version is not needed since this is only for codegen.
|
|
let isCodeGenOnly = 1, Defs = [CPSR] in {
|
|
multiclass T2I_rbin_s_is<bits<4> opcod, string opc, PatFrag opnode> {
|
|
// shifted imm
|
|
def ri : T2TwoRegImm<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm), IIC_iALUi,
|
|
!strconcat(opc, "s"), ".w\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (opnode t2_so_imm:$imm, rGPR:$Rn))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{15} = 0;
|
|
}
|
|
// shifted register
|
|
def rs : T2TwoRegShiftedReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm),
|
|
IIC_iALUsi, !strconcat(opc, "s"), "\t$Rd, $Rn, $ShiftedRm",
|
|
[(set rGPR:$Rd, (opnode t2_so_reg:$ShiftedRm, rGPR:$Rn))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
}
|
|
}
|
|
}
|
|
|
|
/// T2I_sh_ir - Defines a set of (op reg, {so_imm|r}) patterns for a shift /
|
|
// rotate operation that produces a value.
|
|
multiclass T2I_sh_ir<bits<2> opcod, string opc, PatFrag opnode> {
|
|
// 5-bit imm
|
|
def ri : T2sTwoRegShiftImm<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rm, i32imm:$imm), IIC_iMOVsi,
|
|
opc, ".w\t$Rd, $Rm, $imm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rm, imm1_31:$imm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-21} = 0b010010;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = opcod;
|
|
}
|
|
// register
|
|
def rr : T2sThreeReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMOVsr,
|
|
opc, ".w\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
}
|
|
|
|
/// T2I_cmp_irs - Defines a set of (op r, {so_imm|r|so_reg}) cmp / test
|
|
/// patterns. Similar to T2I_bin_irs except the instruction does not produce
|
|
/// a explicit result, only implicitly set CPSR.
|
|
let isCompare = 1, Defs = [CPSR] in {
|
|
multiclass T2I_cmp_irs<bits<4> opcod, string opc,
|
|
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
|
|
PatFrag opnode> {
|
|
// shifted imm
|
|
def ri : T2OneRegCmpImm<
|
|
(outs), (ins GPR:$Rn, t2_so_imm:$imm), iii,
|
|
opc, ".w\t$Rn, $imm",
|
|
[(opnode GPR:$Rn, t2_so_imm:$imm)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{15} = 0;
|
|
let Inst{11-8} = 0b1111; // Rd
|
|
}
|
|
// register
|
|
def rr : T2TwoRegCmp<
|
|
(outs), (ins GPR:$lhs, rGPR:$rhs), iir,
|
|
opc, ".w\t$lhs, $rhs",
|
|
[(opnode GPR:$lhs, rGPR:$rhs)]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{14-12} = 0b000; // imm3
|
|
let Inst{11-8} = 0b1111; // Rd
|
|
let Inst{7-6} = 0b00; // imm2
|
|
let Inst{5-4} = 0b00; // type
|
|
}
|
|
// shifted register
|
|
def rs : T2OneRegCmpShiftedReg<
|
|
(outs), (ins GPR:$Rn, t2_so_reg:$ShiftedRm), iis,
|
|
opc, ".w\t$Rn, $ShiftedRm",
|
|
[(opnode GPR:$Rn, t2_so_reg:$ShiftedRm)]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = opcod;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{11-8} = 0b1111; // Rd
|
|
}
|
|
}
|
|
}
|
|
|
|
/// T2I_ld - Defines a set of (op r, {imm12|imm8|so_reg}) load patterns.
|
|
multiclass T2I_ld<bit signed, bits<2> opcod, string opc,
|
|
InstrItinClass iii, InstrItinClass iis, PatFrag opnode> {
|
|
def i12 : T2Ii12<(outs GPR:$Rt), (ins t2addrmode_imm12:$addr), iii,
|
|
opc, ".w\t$Rt, $addr",
|
|
[(set GPR:$Rt, (opnode t2addrmode_imm12:$addr))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 1;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
|
|
bits<4> Rt;
|
|
let Inst{15-12} = Rt;
|
|
|
|
bits<17> addr;
|
|
let addr{12} = 1; // add = TRUE
|
|
let Inst{19-16} = addr{16-13}; // Rn
|
|
let Inst{23} = addr{12}; // U
|
|
let Inst{11-0} = addr{11-0}; // imm
|
|
}
|
|
def i8 : T2Ii8 <(outs GPR:$Rt), (ins t2addrmode_imm8:$addr), iii,
|
|
opc, "\t$Rt, $addr",
|
|
[(set GPR:$Rt, (opnode t2addrmode_imm8:$addr))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
let Inst{11} = 1;
|
|
// Offset: index==TRUE, wback==FALSE
|
|
let Inst{10} = 1; // The P bit.
|
|
let Inst{8} = 0; // The W bit.
|
|
|
|
bits<4> Rt;
|
|
let Inst{15-12} = Rt;
|
|
|
|
bits<13> addr;
|
|
let Inst{19-16} = addr{12-9}; // Rn
|
|
let Inst{9} = addr{8}; // U
|
|
let Inst{7-0} = addr{7-0}; // imm
|
|
}
|
|
def s : T2Iso <(outs GPR:$Rt), (ins t2addrmode_so_reg:$addr), iis,
|
|
opc, ".w\t$Rt, $addr",
|
|
[(set GPR:$Rt, (opnode t2addrmode_so_reg:$addr))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
let Inst{11-6} = 0b000000;
|
|
|
|
bits<4> Rt;
|
|
let Inst{15-12} = Rt;
|
|
|
|
bits<10> addr;
|
|
let Inst{19-16} = addr{9-6}; // Rn
|
|
let Inst{3-0} = addr{5-2}; // Rm
|
|
let Inst{5-4} = addr{1-0}; // imm
|
|
}
|
|
|
|
// FIXME: Is the pci variant actually needed?
|
|
def pci : T2Ipc <(outs GPR:$Rt), (ins t2ldrlabel:$addr), iii,
|
|
opc, ".w\t$Rt, $addr",
|
|
[(set GPR:$Rt, (opnode (ARMWrapper tconstpool:$addr)))]> {
|
|
let isReMaterializable = 1;
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = ?; // add = (U == '1')
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 1; // load
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
bits<4> Rt;
|
|
bits<12> addr;
|
|
let Inst{15-12} = Rt{3-0};
|
|
let Inst{11-0} = addr{11-0};
|
|
}
|
|
}
|
|
|
|
/// T2I_st - Defines a set of (op r, {imm12|imm8|so_reg}) store patterns.
|
|
multiclass T2I_st<bits<2> opcod, string opc,
|
|
InstrItinClass iii, InstrItinClass iis, PatFrag opnode> {
|
|
def i12 : T2Ii12<(outs), (ins GPR:$Rt, t2addrmode_imm12:$addr), iii,
|
|
opc, ".w\t$Rt, $addr",
|
|
[(opnode GPR:$Rt, t2addrmode_imm12:$addr)]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0001;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 0; // !load
|
|
|
|
bits<4> Rt;
|
|
let Inst{15-12} = Rt;
|
|
|
|
bits<17> addr;
|
|
let addr{12} = 1; // add = TRUE
|
|
let Inst{19-16} = addr{16-13}; // Rn
|
|
let Inst{23} = addr{12}; // U
|
|
let Inst{11-0} = addr{11-0}; // imm
|
|
}
|
|
def i8 : T2Ii8 <(outs), (ins GPR:$Rt, t2addrmode_imm8:$addr), iii,
|
|
opc, "\t$Rt, $addr",
|
|
[(opnode GPR:$Rt, t2addrmode_imm8:$addr)]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0000;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 0; // !load
|
|
let Inst{11} = 1;
|
|
// Offset: index==TRUE, wback==FALSE
|
|
let Inst{10} = 1; // The P bit.
|
|
let Inst{8} = 0; // The W bit.
|
|
|
|
bits<4> Rt;
|
|
let Inst{15-12} = Rt;
|
|
|
|
bits<13> addr;
|
|
let Inst{19-16} = addr{12-9}; // Rn
|
|
let Inst{9} = addr{8}; // U
|
|
let Inst{7-0} = addr{7-0}; // imm
|
|
}
|
|
def s : T2Iso <(outs), (ins GPR:$Rt, t2addrmode_so_reg:$addr), iis,
|
|
opc, ".w\t$Rt, $addr",
|
|
[(opnode GPR:$Rt, t2addrmode_so_reg:$addr)]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0000;
|
|
let Inst{22-21} = opcod;
|
|
let Inst{20} = 0; // !load
|
|
let Inst{11-6} = 0b000000;
|
|
|
|
bits<4> Rt;
|
|
let Inst{15-12} = Rt;
|
|
|
|
bits<10> addr;
|
|
let Inst{19-16} = addr{9-6}; // Rn
|
|
let Inst{3-0} = addr{5-2}; // Rm
|
|
let Inst{5-4} = addr{1-0}; // imm
|
|
}
|
|
}
|
|
|
|
/// T2I_ext_rrot - A unary operation with two forms: one whose operand is a
|
|
/// register and one whose operand is a register rotated by 8/16/24.
|
|
multiclass T2I_ext_rrot<bits<3> opcod, string opc, PatFrag opnode> {
|
|
def r : T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iEXTr,
|
|
opc, ".w\t$Rd, $Rm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def r_rot : T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm, rot_imm:$rot), IIC_iEXTr,
|
|
opc, ".w\t$Rd, $Rm, ror $rot",
|
|
[(set rGPR:$Rd, (opnode (rotr rGPR:$Rm, rot_imm:$rot)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
|
|
bits<2> rot;
|
|
let Inst{5-4} = rot{1-0}; // rotate
|
|
}
|
|
}
|
|
|
|
// UXTB16 - Requres T2ExtractPack, does not need the .w qualifier.
|
|
multiclass T2I_ext_rrot_uxtb16<bits<3> opcod, string opc, PatFrag opnode> {
|
|
def r : T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iEXTr,
|
|
opc, "\t$Rd, $Rm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rm))]>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def r_rot : T2TwoReg<(outs rGPR:$dst), (ins rGPR:$Rm, rot_imm:$rot),
|
|
IIC_iEXTr, opc, "\t$dst, $Rm, ror $rot",
|
|
[(set rGPR:$dst, (opnode (rotr rGPR:$Rm, rot_imm:$rot)))]>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
|
|
bits<2> rot;
|
|
let Inst{5-4} = rot{1-0}; // rotate
|
|
}
|
|
}
|
|
|
|
// SXTB16 - Requres T2ExtractPack, does not need the .w qualifier, no pattern
|
|
// supported yet.
|
|
multiclass T2I_ext_rrot_sxtb16<bits<3> opcod, string opc> {
|
|
def r : T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iEXTr,
|
|
opc, "\t$Rd, $Rm", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def r_rot : T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm, i32imm:$rot), IIC_iEXTr,
|
|
opc, "\t$Rd, $Rm, ror $rot", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
|
|
bits<2> rot;
|
|
let Inst{5-4} = rot{1-0}; // rotate
|
|
}
|
|
}
|
|
|
|
/// T2I_exta_rrot - A binary operation with two forms: one whose operand is a
|
|
/// register and one whose operand is a register rotated by 8/16/24.
|
|
multiclass T2I_exta_rrot<bits<3> opcod, string opc, PatFrag opnode> {
|
|
def rr : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iEXTAr,
|
|
opc, "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn, rGPR:$Rm))]>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def rr_rot : T2ThreeReg<(outs rGPR:$Rd),
|
|
(ins rGPR:$Rn, rGPR:$Rm, rot_imm:$rot),
|
|
IIC_iEXTAsr, opc, "\t$Rd, $Rn, $Rm, ror $rot",
|
|
[(set rGPR:$Rd, (opnode rGPR:$Rn,
|
|
(rotr rGPR:$Rm, rot_imm:$rot)))]>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
|
|
bits<2> rot;
|
|
let Inst{5-4} = rot{1-0}; // rotate
|
|
}
|
|
}
|
|
|
|
// DO variant - disassembly only, no pattern
|
|
|
|
multiclass T2I_exta_rrot_DO<bits<3> opcod, string opc> {
|
|
def rr : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iEXTAr,
|
|
opc, "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
let Inst{5-4} = 0b00; // rotate
|
|
}
|
|
def rr_rot : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, i32imm:$rot),
|
|
IIC_iEXTAsr, opc, "\t$Rd, $Rn, $Rm, ror $rot", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0100;
|
|
let Inst{22-20} = opcod;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 1;
|
|
|
|
bits<2> rot;
|
|
let Inst{5-4} = rot{1-0}; // rotate
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Instructions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Miscellaneous Instructions.
|
|
//
|
|
|
|
class T2PCOneRegImm<dag oops, dag iops, InstrItinClass itin,
|
|
string asm, list<dag> pattern>
|
|
: T2XI<oops, iops, itin, asm, pattern> {
|
|
bits<4> Rd;
|
|
bits<12> label;
|
|
|
|
let Inst{11-8} = Rd;
|
|
let Inst{26} = label{11};
|
|
let Inst{14-12} = label{10-8};
|
|
let Inst{7-0} = label{7-0};
|
|
}
|
|
|
|
// LEApcrel - Load a pc-relative address into a register without offending the
|
|
// assembler.
|
|
def t2ADR : T2PCOneRegImm<(outs rGPR:$Rd),
|
|
(ins t2adrlabel:$addr, pred:$p),
|
|
IIC_iALUi, "adr{$p}.w\t$Rd, #$addr", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-24} = 0b10;
|
|
// Inst{23:21} = '11' (add = FALSE) or '00' (add = TRUE)
|
|
let Inst{22} = 0;
|
|
let Inst{20} = 0;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
|
|
bits<4> Rd;
|
|
bits<13> addr;
|
|
let Inst{11-8} = Rd;
|
|
let Inst{23} = addr{12};
|
|
let Inst{21} = addr{12};
|
|
let Inst{26} = addr{11};
|
|
let Inst{14-12} = addr{10-8};
|
|
let Inst{7-0} = addr{7-0};
|
|
}
|
|
|
|
let neverHasSideEffects = 1, isReMaterializable = 1 in
|
|
def t2LEApcrel : t2PseudoInst<(outs rGPR:$Rd), (ins i32imm:$label, pred:$p),
|
|
Size4Bytes, IIC_iALUi, []>;
|
|
def t2LEApcrelJT : t2PseudoInst<(outs rGPR:$Rd),
|
|
(ins i32imm:$label, nohash_imm:$id, pred:$p),
|
|
Size4Bytes, IIC_iALUi,
|
|
[]>;
|
|
|
|
|
|
// FIXME: None of these add/sub SP special instructions should be necessary
|
|
// at all for thumb2 since they use the same encodings as the generic
|
|
// add/sub instructions. In thumb1 we need them since they have dedicated
|
|
// encodings. At the least, they should be pseudo instructions.
|
|
// ADD r, sp, {so_imm|i12}
|
|
let isCodeGenOnly = 1 in {
|
|
def t2ADDrSPi : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, t2_so_imm:$imm),
|
|
IIC_iALUi, "add", ".w\t$Rd, $Rn, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b1000;
|
|
let Inst{15} = 0;
|
|
}
|
|
def t2ADDrSPi12 : T2TwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, imm0_4095:$imm),
|
|
IIC_iALUi, "addw", "\t$Rd, $Rn, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-20} = 0b100000;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// ADD r, sp, so_reg
|
|
def t2ADDrSPs : T2sTwoRegShiftedReg<
|
|
(outs GPR:$Rd), (ins GPR:$Rn, t2_so_reg:$ShiftedRm),
|
|
IIC_iALUsi, "add", ".w\t$Rd, $Rn, $ShiftedRm", []> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b1000;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// SUB r, sp, {so_imm|i12}
|
|
def t2SUBrSPi : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, t2_so_imm:$imm),
|
|
IIC_iALUi, "sub", ".w\t$Rd, $Rn, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b1101;
|
|
let Inst{15} = 0;
|
|
}
|
|
def t2SUBrSPi12 : T2TwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, imm0_4095:$imm),
|
|
IIC_iALUi, "subw", "\t$Rd, $Rn, $imm", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-20} = 0b101010;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// SUB r, sp, so_reg
|
|
def t2SUBrSPs : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, t2_so_reg:$imm),
|
|
IIC_iALUsi,
|
|
"sub", "\t$Rd, $Rn, $imm", []> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b1101;
|
|
let Inst{19-16} = 0b1101; // Rn = sp
|
|
let Inst{15} = 0;
|
|
}
|
|
} // end isCodeGenOnly = 1
|
|
|
|
// Signed and unsigned division on v7-M
|
|
def t2SDIV : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iALUi,
|
|
"sdiv", "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (sdiv rGPR:$Rn, rGPR:$Rm))]>,
|
|
Requires<[HasDivide, IsThumb2]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-21} = 0b011100;
|
|
let Inst{20} = 0b1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-4} = 0b1111;
|
|
}
|
|
|
|
def t2UDIV : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iALUi,
|
|
"udiv", "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (udiv rGPR:$Rn, rGPR:$Rm))]>,
|
|
Requires<[HasDivide, IsThumb2]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-21} = 0b011101;
|
|
let Inst{20} = 0b1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-4} = 0b1111;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Load / store Instructions.
|
|
//
|
|
|
|
// Load
|
|
let canFoldAsLoad = 1, isReMaterializable = 1 in
|
|
defm t2LDR : T2I_ld<0, 0b10, "ldr", IIC_iLoad_i, IIC_iLoad_si,
|
|
UnOpFrag<(load node:$Src)>>;
|
|
|
|
// Loads with zero extension
|
|
defm t2LDRH : T2I_ld<0, 0b01, "ldrh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
|
|
UnOpFrag<(zextloadi16 node:$Src)>>;
|
|
defm t2LDRB : T2I_ld<0, 0b00, "ldrb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
|
|
UnOpFrag<(zextloadi8 node:$Src)>>;
|
|
|
|
// Loads with sign extension
|
|
defm t2LDRSH : T2I_ld<1, 0b01, "ldrsh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
|
|
UnOpFrag<(sextloadi16 node:$Src)>>;
|
|
defm t2LDRSB : T2I_ld<1, 0b00, "ldrsb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
|
|
UnOpFrag<(sextloadi8 node:$Src)>>;
|
|
|
|
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1 in {
|
|
// Load doubleword
|
|
def t2LDRDi8 : T2Ii8s4<1, 0, 1, (outs rGPR:$Rt, rGPR:$Rt2),
|
|
(ins t2addrmode_imm8s4:$addr),
|
|
IIC_iLoad_d_i, "ldrd", "\t$Rt, $Rt2, $addr", []>;
|
|
} // mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1
|
|
|
|
// zextload i1 -> zextload i8
|
|
def : T2Pat<(zextloadi1 t2addrmode_imm12:$addr),
|
|
(t2LDRBi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(zextloadi1 t2addrmode_imm8:$addr),
|
|
(t2LDRBi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(zextloadi1 t2addrmode_so_reg:$addr),
|
|
(t2LDRBs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(zextloadi1 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRBpci tconstpool:$addr)>;
|
|
|
|
// extload -> zextload
|
|
// FIXME: Reduce the number of patterns by legalizing extload to zextload
|
|
// earlier?
|
|
def : T2Pat<(extloadi1 t2addrmode_imm12:$addr),
|
|
(t2LDRBi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(extloadi1 t2addrmode_imm8:$addr),
|
|
(t2LDRBi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(extloadi1 t2addrmode_so_reg:$addr),
|
|
(t2LDRBs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(extloadi1 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRBpci tconstpool:$addr)>;
|
|
|
|
def : T2Pat<(extloadi8 t2addrmode_imm12:$addr),
|
|
(t2LDRBi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(extloadi8 t2addrmode_imm8:$addr),
|
|
(t2LDRBi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(extloadi8 t2addrmode_so_reg:$addr),
|
|
(t2LDRBs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(extloadi8 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRBpci tconstpool:$addr)>;
|
|
|
|
def : T2Pat<(extloadi16 t2addrmode_imm12:$addr),
|
|
(t2LDRHi12 t2addrmode_imm12:$addr)>;
|
|
def : T2Pat<(extloadi16 t2addrmode_imm8:$addr),
|
|
(t2LDRHi8 t2addrmode_imm8:$addr)>;
|
|
def : T2Pat<(extloadi16 t2addrmode_so_reg:$addr),
|
|
(t2LDRHs t2addrmode_so_reg:$addr)>;
|
|
def : T2Pat<(extloadi16 (ARMWrapper tconstpool:$addr)),
|
|
(t2LDRHpci tconstpool:$addr)>;
|
|
|
|
// FIXME: The destination register of the loads and stores can't be PC, but
|
|
// can be SP. We need another regclass (similar to rGPR) to represent
|
|
// that. Not a pressing issue since these are selected manually,
|
|
// not via pattern.
|
|
|
|
// Indexed loads
|
|
|
|
let mayLoad = 1, neverHasSideEffects = 1 in {
|
|
def t2LDR_PRE : T2Iidxldst<0, 0b10, 1, 1, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoad_iu,
|
|
"ldr", "\t$Rt, $addr!", "$addr.base = $Rn",
|
|
[]>;
|
|
|
|
def t2LDR_POST : T2Iidxldst<0, 0b10, 1, 0, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins GPR:$base, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoad_iu,
|
|
"ldr", "\t$Rt, [$Rn], $addr", "$base = $Rn",
|
|
[]>;
|
|
|
|
def t2LDRB_PRE : T2Iidxldst<0, 0b00, 1, 1, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
|
|
"ldrb", "\t$Rt, $addr!", "$addr.base = $Rn",
|
|
[]>;
|
|
def t2LDRB_POST : T2Iidxldst<0, 0b00, 1, 0, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins GPR:$base, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
|
|
"ldrb", "\t$Rt, [$Rn], $addr", "$base = $Rn",
|
|
[]>;
|
|
|
|
def t2LDRH_PRE : T2Iidxldst<0, 0b01, 1, 1, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
|
|
"ldrh", "\t$Rt, $addr!", "$addr.base = $Rn",
|
|
[]>;
|
|
def t2LDRH_POST : T2Iidxldst<0, 0b01, 1, 0, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins GPR:$base, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
|
|
"ldrh", "\t$Rt, [$Rn], $addr", "$base = $Rn",
|
|
[]>;
|
|
|
|
def t2LDRSB_PRE : T2Iidxldst<1, 0b00, 1, 1, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
|
|
"ldrsb", "\t$Rt, $addr!", "$addr.base = $Rn",
|
|
[]>;
|
|
def t2LDRSB_POST : T2Iidxldst<1, 0b00, 1, 0, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins GPR:$base, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
|
|
"ldrsb", "\t$Rt, [$Rn], $addr", "$base = $Rn",
|
|
[]>;
|
|
|
|
def t2LDRSH_PRE : T2Iidxldst<1, 0b01, 1, 1, (outs GPR:$Rt, GPR:$Rn),
|
|
(ins t2addrmode_imm8:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
|
|
"ldrsh", "\t$Rt, $addr!", "$addr.base = $Rn",
|
|
[]>;
|
|
def t2LDRSH_POST : T2Iidxldst<1, 0b01, 1, 0, (outs GPR:$dst, GPR:$Rn),
|
|
(ins GPR:$base, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
|
|
"ldrsh", "\t$dst, [$Rn], $addr", "$base = $Rn",
|
|
[]>;
|
|
} // mayLoad = 1, neverHasSideEffects = 1
|
|
|
|
// LDRT, LDRBT, LDRHT, LDRSBT, LDRSHT all have offset mode (PUW=0b110) and are
|
|
// for disassembly only.
|
|
// Ref: A8.6.57 LDR (immediate, Thumb) Encoding T4
|
|
class T2IldT<bit signed, bits<2> type, string opc, InstrItinClass ii>
|
|
: T2Ii8<(outs rGPR:$Rt), (ins t2addrmode_imm8:$addr), ii, opc,
|
|
"\t$Rt, $addr", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = signed;
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = type;
|
|
let Inst{20} = 1; // load
|
|
let Inst{11} = 1;
|
|
let Inst{10-8} = 0b110; // PUW.
|
|
|
|
bits<4> Rt;
|
|
bits<13> addr;
|
|
let Inst{15-12} = Rt;
|
|
let Inst{19-16} = addr{12-9};
|
|
let Inst{7-0} = addr{7-0};
|
|
}
|
|
|
|
def t2LDRT : T2IldT<0, 0b10, "ldrt", IIC_iLoad_i>;
|
|
def t2LDRBT : T2IldT<0, 0b00, "ldrbt", IIC_iLoad_bh_i>;
|
|
def t2LDRHT : T2IldT<0, 0b01, "ldrht", IIC_iLoad_bh_i>;
|
|
def t2LDRSBT : T2IldT<1, 0b00, "ldrsbt", IIC_iLoad_bh_i>;
|
|
def t2LDRSHT : T2IldT<1, 0b01, "ldrsht", IIC_iLoad_bh_i>;
|
|
|
|
// Store
|
|
defm t2STR :T2I_st<0b10,"str", IIC_iStore_i, IIC_iStore_si,
|
|
BinOpFrag<(store node:$LHS, node:$RHS)>>;
|
|
defm t2STRB:T2I_st<0b00,"strb", IIC_iStore_bh_i, IIC_iStore_bh_si,
|
|
BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
|
|
defm t2STRH:T2I_st<0b01,"strh", IIC_iStore_bh_i, IIC_iStore_bh_si,
|
|
BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
|
|
|
|
// Store doubleword
|
|
let mayLoad = 1, neverHasSideEffects = 1, hasExtraSrcRegAllocReq = 1 in
|
|
def t2STRDi8 : T2Ii8s4<1, 0, 0, (outs),
|
|
(ins GPR:$Rt, GPR:$Rt2, t2addrmode_imm8s4:$addr),
|
|
IIC_iStore_d_r, "strd", "\t$Rt, $Rt2, $addr", []>;
|
|
|
|
// Indexed stores
|
|
def t2STR_PRE : T2Iidxldst<0, 0b10, 0, 1, (outs GPR:$base_wb),
|
|
(ins GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iStore_iu,
|
|
"str", "\t$Rt, [$Rn, $addr]!",
|
|
"$Rn = $base_wb,@earlyclobber $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(pre_store GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr))]>;
|
|
|
|
def t2STR_POST : T2Iidxldst<0, 0b10, 0, 0, (outs GPR:$base_wb),
|
|
(ins GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iStore_iu,
|
|
"str", "\t$Rt, [$Rn], $addr",
|
|
"$Rn = $base_wb,@earlyclobber $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(post_store GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr))]>;
|
|
|
|
def t2STRH_PRE : T2Iidxldst<0, 0b01, 0, 1, (outs GPR:$base_wb),
|
|
(ins GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iStore_iu,
|
|
"strh", "\t$Rt, [$Rn, $addr]!",
|
|
"$Rn = $base_wb,@earlyclobber $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(pre_truncsti16 GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr))]>;
|
|
|
|
def t2STRH_POST : T2Iidxldst<0, 0b01, 0, 0, (outs GPR:$base_wb),
|
|
(ins GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iStore_bh_iu,
|
|
"strh", "\t$Rt, [$Rn], $addr",
|
|
"$Rn = $base_wb,@earlyclobber $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(post_truncsti16 GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr))]>;
|
|
|
|
def t2STRB_PRE : T2Iidxldst<0, 0b00, 0, 1, (outs GPR:$base_wb),
|
|
(ins GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePre, IIC_iStore_bh_iu,
|
|
"strb", "\t$Rt, [$Rn, $addr]!",
|
|
"$Rn = $base_wb,@earlyclobber $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(pre_truncsti8 GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr))]>;
|
|
|
|
def t2STRB_POST : T2Iidxldst<0, 0b00, 0, 0, (outs GPR:$base_wb),
|
|
(ins GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr),
|
|
AddrModeT2_i8, IndexModePost, IIC_iStore_bh_iu,
|
|
"strb", "\t$Rt, [$Rn], $addr",
|
|
"$Rn = $base_wb,@earlyclobber $base_wb",
|
|
[(set GPR:$base_wb,
|
|
(post_truncsti8 GPR:$Rt, GPR:$Rn, t2am_imm8_offset:$addr))]>;
|
|
|
|
// STRT, STRBT, STRHT all have offset mode (PUW=0b110) and are for disassembly
|
|
// only.
|
|
// Ref: A8.6.193 STR (immediate, Thumb) Encoding T4
|
|
class T2IstT<bits<2> type, string opc, InstrItinClass ii>
|
|
: T2Ii8<(outs rGPR:$Rt), (ins t2addrmode_imm8:$addr), ii, opc,
|
|
"\t$Rt, $addr", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24} = 0; // not signed
|
|
let Inst{23} = 0;
|
|
let Inst{22-21} = type;
|
|
let Inst{20} = 0; // store
|
|
let Inst{11} = 1;
|
|
let Inst{10-8} = 0b110; // PUW
|
|
|
|
bits<4> Rt;
|
|
bits<13> addr;
|
|
let Inst{15-12} = Rt;
|
|
let Inst{19-16} = addr{12-9};
|
|
let Inst{7-0} = addr{7-0};
|
|
}
|
|
|
|
def t2STRT : T2IstT<0b10, "strt", IIC_iStore_i>;
|
|
def t2STRBT : T2IstT<0b00, "strbt", IIC_iStore_bh_i>;
|
|
def t2STRHT : T2IstT<0b01, "strht", IIC_iStore_bh_i>;
|
|
|
|
// ldrd / strd pre / post variants
|
|
// For disassembly only.
|
|
|
|
def t2LDRD_PRE : T2Ii8s4<1, 1, 1, (outs rGPR:$Rt, rGPR:$Rt2),
|
|
(ins GPR:$base, t2am_imm8s4_offset:$imm), IIC_iLoad_d_ru,
|
|
"ldrd", "\t$Rt, $Rt2, [$base, $imm]!", []>;
|
|
|
|
def t2LDRD_POST : T2Ii8s4<0, 1, 1, (outs rGPR:$Rt, rGPR:$Rt2),
|
|
(ins GPR:$base, t2am_imm8s4_offset:$imm), IIC_iLoad_d_ru,
|
|
"ldrd", "\t$Rt, $Rt2, [$base], $imm", []>;
|
|
|
|
def t2STRD_PRE : T2Ii8s4<1, 1, 0, (outs),
|
|
(ins rGPR:$Rt, rGPR:$Rt2, GPR:$base, t2am_imm8s4_offset:$imm),
|
|
IIC_iStore_d_ru, "strd", "\t$Rt, $Rt2, [$base, $imm]!", []>;
|
|
|
|
def t2STRD_POST : T2Ii8s4<0, 1, 0, (outs),
|
|
(ins rGPR:$Rt, rGPR:$Rt2, GPR:$base, t2am_imm8s4_offset:$imm),
|
|
IIC_iStore_d_ru, "strd", "\t$Rt, $Rt2, [$base], $imm", []>;
|
|
|
|
// T2Ipl (Preload Data/Instruction) signals the memory system of possible future
|
|
// data/instruction access. These are for disassembly only.
|
|
// instr_write is inverted for Thumb mode: (prefetch 3) -> (preload 0),
|
|
// (prefetch 1) -> (preload 2), (prefetch 2) -> (preload 1).
|
|
multiclass T2Ipl<bits<1> write, bits<1> instr, string opc> {
|
|
|
|
def i12 : T2Ii12<(outs), (ins t2addrmode_imm12:$addr), IIC_Preload, opc,
|
|
"\t$addr",
|
|
[(ARMPreload t2addrmode_imm12:$addr, (i32 write), (i32 instr))]> {
|
|
let Inst{31-25} = 0b1111100;
|
|
let Inst{24} = instr;
|
|
let Inst{22} = 0;
|
|
let Inst{21} = write;
|
|
let Inst{20} = 1;
|
|
let Inst{15-12} = 0b1111;
|
|
|
|
bits<17> addr;
|
|
let addr{12} = 1; // add = TRUE
|
|
let Inst{19-16} = addr{16-13}; // Rn
|
|
let Inst{23} = addr{12}; // U
|
|
let Inst{11-0} = addr{11-0}; // imm12
|
|
}
|
|
|
|
def i8 : T2Ii8<(outs), (ins t2addrmode_imm8:$addr), IIC_Preload, opc,
|
|
"\t$addr",
|
|
[(ARMPreload t2addrmode_imm8:$addr, (i32 write), (i32 instr))]> {
|
|
let Inst{31-25} = 0b1111100;
|
|
let Inst{24} = instr;
|
|
let Inst{23} = 0; // U = 0
|
|
let Inst{22} = 0;
|
|
let Inst{21} = write;
|
|
let Inst{20} = 1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{11-8} = 0b1100;
|
|
|
|
bits<13> addr;
|
|
let Inst{19-16} = addr{12-9}; // Rn
|
|
let Inst{7-0} = addr{7-0}; // imm8
|
|
}
|
|
|
|
def s : T2Iso<(outs), (ins t2addrmode_so_reg:$addr), IIC_Preload, opc,
|
|
"\t$addr",
|
|
[(ARMPreload t2addrmode_so_reg:$addr, (i32 write), (i32 instr))]> {
|
|
let Inst{31-25} = 0b1111100;
|
|
let Inst{24} = instr;
|
|
let Inst{23} = 0; // add = TRUE for T1
|
|
let Inst{22} = 0;
|
|
let Inst{21} = write;
|
|
let Inst{20} = 1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{11-6} = 0000000;
|
|
|
|
bits<10> addr;
|
|
let Inst{19-16} = addr{9-6}; // Rn
|
|
let Inst{3-0} = addr{5-2}; // Rm
|
|
let Inst{5-4} = addr{1-0}; // imm2
|
|
}
|
|
}
|
|
|
|
defm t2PLD : T2Ipl<0, 0, "pld">, Requires<[IsThumb2]>;
|
|
defm t2PLDW : T2Ipl<1, 0, "pldw">, Requires<[IsThumb2,HasV7,HasMP]>;
|
|
defm t2PLI : T2Ipl<0, 1, "pli">, Requires<[IsThumb2,HasV7]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Load / store multiple Instructions.
|
|
//
|
|
|
|
multiclass thumb2_ldst_mult<string asm, InstrItinClass itin,
|
|
InstrItinClass itin_upd, bit L_bit> {
|
|
def IA :
|
|
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
|
|
itin, !strconcat(asm, "ia${p}.w\t$Rn, $regs"), []> {
|
|
bits<4> Rn;
|
|
bits<16> regs;
|
|
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24-23} = 0b01; // Increment After
|
|
let Inst{22} = 0;
|
|
let Inst{21} = 0; // No writeback
|
|
let Inst{20} = L_bit;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-0} = regs;
|
|
}
|
|
def IA_UPD :
|
|
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
|
|
itin_upd, !strconcat(asm, "ia${p}.w\t$Rn!, $regs"), "$Rn = $wb", []> {
|
|
bits<4> Rn;
|
|
bits<16> regs;
|
|
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24-23} = 0b01; // Increment After
|
|
let Inst{22} = 0;
|
|
let Inst{21} = 1; // Writeback
|
|
let Inst{20} = L_bit;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-0} = regs;
|
|
}
|
|
def DB :
|
|
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
|
|
itin, !strconcat(asm, "db${p}.w\t$Rn, $regs"), []> {
|
|
bits<4> Rn;
|
|
bits<16> regs;
|
|
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24-23} = 0b10; // Decrement Before
|
|
let Inst{22} = 0;
|
|
let Inst{21} = 0; // No writeback
|
|
let Inst{20} = L_bit;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-0} = regs;
|
|
}
|
|
def DB_UPD :
|
|
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
|
|
itin_upd, !strconcat(asm, "db${p}.w\t$Rn, $regs"), "$Rn = $wb", []> {
|
|
bits<4> Rn;
|
|
bits<16> regs;
|
|
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24-23} = 0b10; // Decrement Before
|
|
let Inst{22} = 0;
|
|
let Inst{21} = 1; // Writeback
|
|
let Inst{20} = L_bit;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-0} = regs;
|
|
}
|
|
}
|
|
|
|
let neverHasSideEffects = 1 in {
|
|
|
|
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
|
|
defm t2LDM : thumb2_ldst_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu, 1>;
|
|
|
|
let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
|
|
defm t2STM : thumb2_ldst_mult<"stm", IIC_iStore_m, IIC_iStore_mu, 0>;
|
|
|
|
} // neverHasSideEffects
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Move Instructions.
|
|
//
|
|
|
|
let neverHasSideEffects = 1 in
|
|
def t2MOVr : T2sTwoReg<(outs GPR:$Rd), (ins GPR:$Rm), IIC_iMOVr,
|
|
"mov", ".w\t$Rd, $Rm", []> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
|
|
// AddedComplexity to ensure isel tries t2MOVi before t2MOVi16.
|
|
let isReMaterializable = 1, isAsCheapAsAMove = 1, isMoveImm = 1,
|
|
AddedComplexity = 1 in
|
|
def t2MOVi : T2sOneRegImm<(outs rGPR:$Rd), (ins t2_so_imm:$imm), IIC_iMOVi,
|
|
"mov", ".w\t$Rd, $imm",
|
|
[(set rGPR:$Rd, t2_so_imm:$imm)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
let isReMaterializable = 1, isAsCheapAsAMove = 1, isMoveImm = 1 in
|
|
def t2MOVi16 : T2I<(outs rGPR:$Rd), (ins i32imm_hilo16:$imm), IIC_iMOVi,
|
|
"movw", "\t$Rd, $imm",
|
|
[(set rGPR:$Rd, imm0_65535:$imm)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{15} = 0;
|
|
|
|
bits<4> Rd;
|
|
bits<16> imm;
|
|
|
|
let Inst{11-8} = Rd;
|
|
let Inst{19-16} = imm{15-12};
|
|
let Inst{26} = imm{11};
|
|
let Inst{14-12} = imm{10-8};
|
|
let Inst{7-0} = imm{7-0};
|
|
}
|
|
|
|
def t2MOVi16_ga_pcrel : PseudoInst<(outs rGPR:$Rd),
|
|
(ins i32imm:$addr, pclabel:$id), IIC_iMOVi, []>;
|
|
|
|
let Constraints = "$src = $Rd" in {
|
|
def t2MOVTi16 : T2I<(outs rGPR:$Rd),
|
|
(ins rGPR:$src, i32imm_hilo16:$imm), IIC_iMOVi,
|
|
"movt", "\t$Rd, $imm",
|
|
[(set rGPR:$Rd,
|
|
(or (and rGPR:$src, 0xffff), lo16AllZero:$imm))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-21} = 0b0110;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{15} = 0;
|
|
|
|
bits<4> Rd;
|
|
bits<16> imm;
|
|
|
|
let Inst{11-8} = Rd;
|
|
let Inst{19-16} = imm{15-12};
|
|
let Inst{26} = imm{11};
|
|
let Inst{14-12} = imm{10-8};
|
|
let Inst{7-0} = imm{7-0};
|
|
}
|
|
|
|
def t2MOVTi16_ga_pcrel : PseudoInst<(outs rGPR:$Rd),
|
|
(ins rGPR:$src, i32imm:$addr, pclabel:$id), IIC_iMOVi, []>;
|
|
} // Constraints
|
|
|
|
def : T2Pat<(or rGPR:$src, 0xffff0000), (t2MOVTi16 rGPR:$src, 0xffff)>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Extend Instructions.
|
|
//
|
|
|
|
// Sign extenders
|
|
|
|
defm t2SXTB : T2I_ext_rrot<0b100, "sxtb",
|
|
UnOpFrag<(sext_inreg node:$Src, i8)>>;
|
|
defm t2SXTH : T2I_ext_rrot<0b000, "sxth",
|
|
UnOpFrag<(sext_inreg node:$Src, i16)>>;
|
|
defm t2SXTB16 : T2I_ext_rrot_sxtb16<0b010, "sxtb16">;
|
|
|
|
defm t2SXTAB : T2I_exta_rrot<0b100, "sxtab",
|
|
BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS, i8))>>;
|
|
defm t2SXTAH : T2I_exta_rrot<0b000, "sxtah",
|
|
BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS,i16))>>;
|
|
defm t2SXTAB16 : T2I_exta_rrot_DO<0b010, "sxtab16">;
|
|
|
|
// TODO: SXT(A){B|H}16 - done for disassembly only
|
|
|
|
// Zero extenders
|
|
|
|
let AddedComplexity = 16 in {
|
|
defm t2UXTB : T2I_ext_rrot<0b101, "uxtb",
|
|
UnOpFrag<(and node:$Src, 0x000000FF)>>;
|
|
defm t2UXTH : T2I_ext_rrot<0b001, "uxth",
|
|
UnOpFrag<(and node:$Src, 0x0000FFFF)>>;
|
|
defm t2UXTB16 : T2I_ext_rrot_uxtb16<0b011, "uxtb16",
|
|
UnOpFrag<(and node:$Src, 0x00FF00FF)>>;
|
|
|
|
// FIXME: This pattern incorrectly assumes the shl operator is a rotate.
|
|
// The transformation should probably be done as a combiner action
|
|
// instead so we can include a check for masking back in the upper
|
|
// eight bits of the source into the lower eight bits of the result.
|
|
//def : T2Pat<(and (shl rGPR:$Src, (i32 8)), 0xFF00FF),
|
|
// (t2UXTB16r_rot rGPR:$Src, 24)>,
|
|
// Requires<[HasT2ExtractPack, IsThumb2]>;
|
|
def : T2Pat<(and (srl rGPR:$Src, (i32 8)), 0xFF00FF),
|
|
(t2UXTB16r_rot rGPR:$Src, 8)>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]>;
|
|
|
|
defm t2UXTAB : T2I_exta_rrot<0b101, "uxtab",
|
|
BinOpFrag<(add node:$LHS, (and node:$RHS, 0x00FF))>>;
|
|
defm t2UXTAH : T2I_exta_rrot<0b001, "uxtah",
|
|
BinOpFrag<(add node:$LHS, (and node:$RHS, 0xFFFF))>>;
|
|
defm t2UXTAB16 : T2I_exta_rrot_DO<0b011, "uxtab16">;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Arithmetic Instructions.
|
|
//
|
|
|
|
defm t2ADD : T2I_bin_ii12rs<0b000, "add",
|
|
BinOpFrag<(add node:$LHS, node:$RHS)>, 1>;
|
|
defm t2SUB : T2I_bin_ii12rs<0b101, "sub",
|
|
BinOpFrag<(sub node:$LHS, node:$RHS)>>;
|
|
|
|
// ADD and SUB with 's' bit set. No 12-bit immediate (T4) variants.
|
|
defm t2ADDS : T2I_bin_s_irs <0b1000, "add",
|
|
IIC_iALUi, IIC_iALUr, IIC_iALUsi,
|
|
BinOpFrag<(addc node:$LHS, node:$RHS)>, 1>;
|
|
defm t2SUBS : T2I_bin_s_irs <0b1101, "sub",
|
|
IIC_iALUi, IIC_iALUr, IIC_iALUsi,
|
|
BinOpFrag<(subc node:$LHS, node:$RHS)>>;
|
|
|
|
defm t2ADC : T2I_adde_sube_irs<0b1010, "adc",
|
|
BinOpFrag<(adde_dead_carry node:$LHS, node:$RHS)>, 1>;
|
|
defm t2SBC : T2I_adde_sube_irs<0b1011, "sbc",
|
|
BinOpFrag<(sube_dead_carry node:$LHS, node:$RHS)>>;
|
|
defm t2ADCS : T2I_adde_sube_s_irs<BinOpFrag<(adde_live_carry node:$LHS, node:$RHS)>, 1>;
|
|
defm t2SBCS : T2I_adde_sube_s_irs<BinOpFrag<(sube_live_carry node:$LHS, node:$RHS)>>;
|
|
|
|
// RSB
|
|
defm t2RSB : T2I_rbin_irs <0b1110, "rsb",
|
|
BinOpFrag<(sub node:$LHS, node:$RHS)>>;
|
|
defm t2RSBS : T2I_rbin_s_is <0b1110, "rsb",
|
|
BinOpFrag<(subc node:$LHS, node:$RHS)>>;
|
|
|
|
// (sub X, imm) gets canonicalized to (add X, -imm). Match this form.
|
|
// The assume-no-carry-in form uses the negation of the input since add/sub
|
|
// assume opposite meanings of the carry flag (i.e., carry == !borrow).
|
|
// See the definition of AddWithCarry() in the ARM ARM A2.2.1 for the gory
|
|
// details.
|
|
// The AddedComplexity preferences the first variant over the others since
|
|
// it can be shrunk to a 16-bit wide encoding, while the others cannot.
|
|
let AddedComplexity = 1 in
|
|
def : T2Pat<(add GPR:$src, imm0_255_neg:$imm),
|
|
(t2SUBri GPR:$src, imm0_255_neg:$imm)>;
|
|
def : T2Pat<(add GPR:$src, t2_so_imm_neg:$imm),
|
|
(t2SUBri GPR:$src, t2_so_imm_neg:$imm)>;
|
|
def : T2Pat<(add GPR:$src, imm0_4095_neg:$imm),
|
|
(t2SUBri12 GPR:$src, imm0_4095_neg:$imm)>;
|
|
let AddedComplexity = 1 in
|
|
def : T2Pat<(addc rGPR:$src, imm0_255_neg:$imm),
|
|
(t2SUBSri rGPR:$src, imm0_255_neg:$imm)>;
|
|
def : T2Pat<(addc rGPR:$src, t2_so_imm_neg:$imm),
|
|
(t2SUBSri rGPR:$src, t2_so_imm_neg:$imm)>;
|
|
// The with-carry-in form matches bitwise not instead of the negation.
|
|
// Effectively, the inverse interpretation of the carry flag already accounts
|
|
// for part of the negation.
|
|
let AddedComplexity = 1 in
|
|
def : T2Pat<(adde_dead_carry rGPR:$src, imm0_255_not:$imm),
|
|
(t2SBCri rGPR:$src, imm0_255_not:$imm)>;
|
|
def : T2Pat<(adde_dead_carry rGPR:$src, t2_so_imm_not:$imm),
|
|
(t2SBCri rGPR:$src, t2_so_imm_not:$imm)>;
|
|
let AddedComplexity = 1 in
|
|
def : T2Pat<(adde_live_carry rGPR:$src, imm0_255_not:$imm),
|
|
(t2SBCSri rGPR:$src, imm0_255_not:$imm)>;
|
|
def : T2Pat<(adde_live_carry rGPR:$src, t2_so_imm_not:$imm),
|
|
(t2SBCSri rGPR:$src, t2_so_imm_not:$imm)>;
|
|
|
|
// Select Bytes -- for disassembly only
|
|
|
|
def t2SEL : T2ThreeReg<(outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm),
|
|
NoItinerary, "sel", "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-24} = 0b010;
|
|
let Inst{23} = 0b1;
|
|
let Inst{22-20} = 0b010;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7} = 0b1;
|
|
let Inst{6-4} = 0b000;
|
|
}
|
|
|
|
// A6.3.13, A6.3.14, A6.3.15 Parallel addition and subtraction (signed/unsigned)
|
|
// And Miscellaneous operations -- for disassembly only
|
|
class T2I_pam<bits<3> op22_20, bits<4> op7_4, string opc,
|
|
list<dag> pat = [/* For disassembly only; pattern left blank */],
|
|
dag iops = (ins rGPR:$Rn, rGPR:$Rm),
|
|
string asm = "\t$Rd, $Rn, $Rm">
|
|
: T2I<(outs rGPR:$Rd), iops, NoItinerary, opc, asm, pat> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0101;
|
|
let Inst{22-20} = op22_20;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-4} = op7_4;
|
|
|
|
bits<4> Rd;
|
|
bits<4> Rn;
|
|
bits<4> Rm;
|
|
|
|
let Inst{11-8} = Rd;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{3-0} = Rm;
|
|
}
|
|
|
|
// Saturating add/subtract -- for disassembly only
|
|
|
|
def t2QADD : T2I_pam<0b000, 0b1000, "qadd",
|
|
[(set rGPR:$Rd, (int_arm_qadd rGPR:$Rn, rGPR:$Rm))],
|
|
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
|
|
def t2QADD16 : T2I_pam<0b001, 0b0001, "qadd16">;
|
|
def t2QADD8 : T2I_pam<0b000, 0b0001, "qadd8">;
|
|
def t2QASX : T2I_pam<0b010, 0b0001, "qasx">;
|
|
def t2QDADD : T2I_pam<0b000, 0b1001, "qdadd", [],
|
|
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
|
|
def t2QDSUB : T2I_pam<0b000, 0b1011, "qdsub", [],
|
|
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
|
|
def t2QSAX : T2I_pam<0b110, 0b0001, "qsax">;
|
|
def t2QSUB : T2I_pam<0b000, 0b1010, "qsub",
|
|
[(set rGPR:$Rd, (int_arm_qsub rGPR:$Rn, rGPR:$Rm))],
|
|
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
|
|
def t2QSUB16 : T2I_pam<0b101, 0b0001, "qsub16">;
|
|
def t2QSUB8 : T2I_pam<0b100, 0b0001, "qsub8">;
|
|
def t2UQADD16 : T2I_pam<0b001, 0b0101, "uqadd16">;
|
|
def t2UQADD8 : T2I_pam<0b000, 0b0101, "uqadd8">;
|
|
def t2UQASX : T2I_pam<0b010, 0b0101, "uqasx">;
|
|
def t2UQSAX : T2I_pam<0b110, 0b0101, "uqsax">;
|
|
def t2UQSUB16 : T2I_pam<0b101, 0b0101, "uqsub16">;
|
|
def t2UQSUB8 : T2I_pam<0b100, 0b0101, "uqsub8">;
|
|
|
|
// Signed/Unsigned add/subtract -- for disassembly only
|
|
|
|
def t2SASX : T2I_pam<0b010, 0b0000, "sasx">;
|
|
def t2SADD16 : T2I_pam<0b001, 0b0000, "sadd16">;
|
|
def t2SADD8 : T2I_pam<0b000, 0b0000, "sadd8">;
|
|
def t2SSAX : T2I_pam<0b110, 0b0000, "ssax">;
|
|
def t2SSUB16 : T2I_pam<0b101, 0b0000, "ssub16">;
|
|
def t2SSUB8 : T2I_pam<0b100, 0b0000, "ssub8">;
|
|
def t2UASX : T2I_pam<0b010, 0b0100, "uasx">;
|
|
def t2UADD16 : T2I_pam<0b001, 0b0100, "uadd16">;
|
|
def t2UADD8 : T2I_pam<0b000, 0b0100, "uadd8">;
|
|
def t2USAX : T2I_pam<0b110, 0b0100, "usax">;
|
|
def t2USUB16 : T2I_pam<0b101, 0b0100, "usub16">;
|
|
def t2USUB8 : T2I_pam<0b100, 0b0100, "usub8">;
|
|
|
|
// Signed/Unsigned halving add/subtract -- for disassembly only
|
|
|
|
def t2SHASX : T2I_pam<0b010, 0b0010, "shasx">;
|
|
def t2SHADD16 : T2I_pam<0b001, 0b0010, "shadd16">;
|
|
def t2SHADD8 : T2I_pam<0b000, 0b0010, "shadd8">;
|
|
def t2SHSAX : T2I_pam<0b110, 0b0010, "shsax">;
|
|
def t2SHSUB16 : T2I_pam<0b101, 0b0010, "shsub16">;
|
|
def t2SHSUB8 : T2I_pam<0b100, 0b0010, "shsub8">;
|
|
def t2UHASX : T2I_pam<0b010, 0b0110, "uhasx">;
|
|
def t2UHADD16 : T2I_pam<0b001, 0b0110, "uhadd16">;
|
|
def t2UHADD8 : T2I_pam<0b000, 0b0110, "uhadd8">;
|
|
def t2UHSAX : T2I_pam<0b110, 0b0110, "uhsax">;
|
|
def t2UHSUB16 : T2I_pam<0b101, 0b0110, "uhsub16">;
|
|
def t2UHSUB8 : T2I_pam<0b100, 0b0110, "uhsub8">;
|
|
|
|
// Helper class for disassembly only
|
|
// A6.3.16 & A6.3.17
|
|
// T2Imac - Thumb2 multiply [accumulate, and absolute difference] instructions.
|
|
class T2ThreeReg_mac<bit long, bits<3> op22_20, bits<4> op7_4, dag oops,
|
|
dag iops, InstrItinClass itin, string opc, string asm, list<dag> pattern>
|
|
: T2ThreeReg<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-24} = 0b011;
|
|
let Inst{23} = long;
|
|
let Inst{22-20} = op22_20;
|
|
let Inst{7-4} = op7_4;
|
|
}
|
|
|
|
class T2FourReg_mac<bit long, bits<3> op22_20, bits<4> op7_4, dag oops,
|
|
dag iops, InstrItinClass itin, string opc, string asm, list<dag> pattern>
|
|
: T2FourReg<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-24} = 0b011;
|
|
let Inst{23} = long;
|
|
let Inst{22-20} = op22_20;
|
|
let Inst{7-4} = op7_4;
|
|
}
|
|
|
|
// Unsigned Sum of Absolute Differences [and Accumulate] -- for disassembly only
|
|
|
|
def t2USAD8 : T2ThreeReg_mac<0, 0b111, 0b0000, (outs rGPR:$Rd),
|
|
(ins rGPR:$Rn, rGPR:$Rm),
|
|
NoItinerary, "usad8", "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2USADA8 : T2FourReg_mac<0, 0b111, 0b0000, (outs rGPR:$Rd),
|
|
(ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), NoItinerary,
|
|
"usada8", "\t$Rd, $Rn, $Rm, $Ra", []>;
|
|
|
|
// Signed/Unsigned saturate -- for disassembly only
|
|
|
|
class T2SatI<dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2I<oops, iops, itin, opc, asm, pattern> {
|
|
bits<4> Rd;
|
|
bits<4> Rn;
|
|
bits<5> sat_imm;
|
|
bits<7> sh;
|
|
|
|
let Inst{11-8} = Rd;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{4-0} = sat_imm{4-0};
|
|
let Inst{21} = sh{6};
|
|
let Inst{14-12} = sh{4-2};
|
|
let Inst{7-6} = sh{1-0};
|
|
}
|
|
|
|
def t2SSAT: T2SatI<
|
|
(outs rGPR:$Rd), (ins i32imm:$sat_imm, rGPR:$Rn, shift_imm:$sh),
|
|
NoItinerary, "ssat", "\t$Rd, $sat_imm, $Rn$sh",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1100;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
def t2SSAT16: T2SatI<
|
|
(outs rGPR:$Rd), (ins i32imm:$sat_imm, rGPR:$Rn), NoItinerary,
|
|
"ssat16", "\t$Rd, $sat_imm, $Rn",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1100;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 1; // sh = '1'
|
|
let Inst{14-12} = 0b000; // imm3 = '000'
|
|
let Inst{7-6} = 0b00; // imm2 = '00'
|
|
}
|
|
|
|
def t2USAT: T2SatI<
|
|
(outs rGPR:$Rd), (ins i32imm:$sat_imm, rGPR:$Rn, shift_imm:$sh),
|
|
NoItinerary, "usat", "\t$Rd, $sat_imm, $Rn$sh",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1110;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
def t2USAT16: T2SatI<
|
|
(outs rGPR:$dst), (ins i32imm:$sat_imm, rGPR:$Rn), NoItinerary,
|
|
"usat16", "\t$dst, $sat_imm, $Rn",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25-22} = 0b1110;
|
|
let Inst{20} = 0;
|
|
let Inst{15} = 0;
|
|
let Inst{21} = 1; // sh = '1'
|
|
let Inst{14-12} = 0b000; // imm3 = '000'
|
|
let Inst{7-6} = 0b00; // imm2 = '00'
|
|
}
|
|
|
|
def : T2Pat<(int_arm_ssat GPR:$a, imm:$pos), (t2SSAT imm:$pos, GPR:$a, 0)>;
|
|
def : T2Pat<(int_arm_usat GPR:$a, imm:$pos), (t2USAT imm:$pos, GPR:$a, 0)>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Shift and rotate Instructions.
|
|
//
|
|
|
|
defm t2LSL : T2I_sh_ir<0b00, "lsl", BinOpFrag<(shl node:$LHS, node:$RHS)>>;
|
|
defm t2LSR : T2I_sh_ir<0b01, "lsr", BinOpFrag<(srl node:$LHS, node:$RHS)>>;
|
|
defm t2ASR : T2I_sh_ir<0b10, "asr", BinOpFrag<(sra node:$LHS, node:$RHS)>>;
|
|
defm t2ROR : T2I_sh_ir<0b11, "ror", BinOpFrag<(rotr node:$LHS, node:$RHS)>>;
|
|
|
|
// (rotr x, (and y, 0x...1f)) ==> (ROR x, y)
|
|
def : Pat<(rotr rGPR:$lhs, (and rGPR:$rhs, lo5AllOne)),
|
|
(t2RORrr rGPR:$lhs, rGPR:$rhs)>;
|
|
|
|
let Uses = [CPSR] in {
|
|
def t2RRX : T2sTwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iMOVsi,
|
|
"rrx", "\t$Rd, $Rm",
|
|
[(set rGPR:$Rd, (ARMrrx rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-4} = 0b0011;
|
|
}
|
|
}
|
|
|
|
let isCodeGenOnly = 1, Defs = [CPSR] in {
|
|
def t2MOVsrl_flag : T2TwoRegShiftImm<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iMOVsi,
|
|
"lsrs", ".w\t$Rd, $Rm, #1",
|
|
[(set rGPR:$Rd, (ARMsrl_flag rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = 0b01; // Shift type.
|
|
// Shift amount = Inst{14-12:7-6} = 1.
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-6} = 0b01;
|
|
}
|
|
def t2MOVsra_flag : T2TwoRegShiftImm<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iMOVsi,
|
|
"asrs", ".w\t$Rd, $Rm, #1",
|
|
[(set rGPR:$Rd, (ARMsra_flag rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 1; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = 0b10; // Shift type.
|
|
// Shift amount = Inst{14-12:7-6} = 1.
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-6} = 0b01;
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Bitwise Instructions.
|
|
//
|
|
|
|
defm t2AND : T2I_bin_w_irs<0b0000, "and",
|
|
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
|
|
BinOpFrag<(and node:$LHS, node:$RHS)>, 1>;
|
|
defm t2ORR : T2I_bin_w_irs<0b0010, "orr",
|
|
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
|
|
BinOpFrag<(or node:$LHS, node:$RHS)>, 1>;
|
|
defm t2EOR : T2I_bin_w_irs<0b0100, "eor",
|
|
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
|
|
BinOpFrag<(xor node:$LHS, node:$RHS)>, 1>;
|
|
|
|
defm t2BIC : T2I_bin_w_irs<0b0001, "bic",
|
|
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
|
|
BinOpFrag<(and node:$LHS, (not node:$RHS))>>;
|
|
|
|
class T2BitFI<dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2I<oops, iops, itin, opc, asm, pattern> {
|
|
bits<4> Rd;
|
|
bits<5> msb;
|
|
bits<5> lsb;
|
|
|
|
let Inst{11-8} = Rd;
|
|
let Inst{4-0} = msb{4-0};
|
|
let Inst{14-12} = lsb{4-2};
|
|
let Inst{7-6} = lsb{1-0};
|
|
}
|
|
|
|
class T2TwoRegBitFI<dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2BitFI<oops, iops, itin, opc, asm, pattern> {
|
|
bits<4> Rn;
|
|
|
|
let Inst{19-16} = Rn;
|
|
}
|
|
|
|
let Constraints = "$src = $Rd" in
|
|
def t2BFC : T2BitFI<(outs rGPR:$Rd), (ins rGPR:$src, bf_inv_mask_imm:$imm),
|
|
IIC_iUNAsi, "bfc", "\t$Rd, $imm",
|
|
[(set rGPR:$Rd, (and rGPR:$src, bf_inv_mask_imm:$imm))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = 0; // should be 0.
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b10110;
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
let Inst{5} = 0; // should be 0.
|
|
|
|
bits<10> imm;
|
|
let msb{4-0} = imm{9-5};
|
|
let lsb{4-0} = imm{4-0};
|
|
}
|
|
|
|
def t2SBFX: T2TwoRegBitFI<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, imm0_31:$lsb, imm0_31_m1:$msb),
|
|
IIC_iUNAsi, "sbfx", "\t$Rd, $Rn, $lsb, $msb", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b10100;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
def t2UBFX: T2TwoRegBitFI<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, imm0_31:$lsb, imm0_31_m1:$msb),
|
|
IIC_iUNAsi, "ubfx", "\t$Rd, $Rn, $lsb, $msb", []> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b11100;
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
// A8.6.18 BFI - Bitfield insert (Encoding T1)
|
|
let Constraints = "$src = $Rd" in {
|
|
def t2BFI : T2TwoRegBitFI<(outs rGPR:$Rd),
|
|
(ins rGPR:$src, rGPR:$Rn, bf_inv_mask_imm:$imm),
|
|
IIC_iBITi, "bfi", "\t$Rd, $Rn, $imm",
|
|
[(set rGPR:$Rd, (ARMbfi rGPR:$src, rGPR:$Rn,
|
|
bf_inv_mask_imm:$imm))]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = 0; // should be 0.
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b10110;
|
|
let Inst{15} = 0;
|
|
let Inst{5} = 0; // should be 0.
|
|
|
|
bits<10> imm;
|
|
let msb{4-0} = imm{9-5};
|
|
let lsb{4-0} = imm{4-0};
|
|
}
|
|
|
|
// GNU as only supports this form of bfi (w/ 4 arguments)
|
|
let isAsmParserOnly = 1 in
|
|
def t2BFI4p : T2TwoRegBitFI<(outs rGPR:$Rd),
|
|
(ins rGPR:$src, rGPR:$Rn, lsb_pos_imm:$lsbit,
|
|
width_imm:$width),
|
|
IIC_iBITi, "bfi", "\t$Rd, $Rn, $lsbit, $width",
|
|
[]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = 0; // should be 0.
|
|
let Inst{25} = 1;
|
|
let Inst{24-20} = 0b10110;
|
|
let Inst{15} = 0;
|
|
let Inst{5} = 0; // should be 0.
|
|
|
|
bits<5> lsbit;
|
|
bits<5> width;
|
|
let msb{4-0} = width; // Custom encoder => lsb+width-1
|
|
let lsb{4-0} = lsbit;
|
|
}
|
|
}
|
|
|
|
defm t2ORN : T2I_bin_irs<0b0011, "orn",
|
|
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
|
|
BinOpFrag<(or node:$LHS, (not node:$RHS))>, 0, "">;
|
|
|
|
// Prefer over of t2EORri ra, rb, -1 because mvn has 16-bit version
|
|
let AddedComplexity = 1 in
|
|
defm t2MVN : T2I_un_irs <0b0011, "mvn",
|
|
IIC_iMVNi, IIC_iMVNr, IIC_iMVNsi,
|
|
UnOpFrag<(not node:$Src)>, 1, 1>;
|
|
|
|
|
|
let AddedComplexity = 1 in
|
|
def : T2Pat<(and rGPR:$src, t2_so_imm_not:$imm),
|
|
(t2BICri rGPR:$src, t2_so_imm_not:$imm)>;
|
|
|
|
// FIXME: Disable this pattern on Darwin to workaround an assembler bug.
|
|
def : T2Pat<(or rGPR:$src, t2_so_imm_not:$imm),
|
|
(t2ORNri rGPR:$src, t2_so_imm_not:$imm)>,
|
|
Requires<[IsThumb2]>;
|
|
|
|
def : T2Pat<(t2_so_imm_not:$src),
|
|
(t2MVNi t2_so_imm_not:$src)>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Multiply Instructions.
|
|
//
|
|
let isCommutable = 1 in
|
|
def t2MUL: T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL32,
|
|
"mul", "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (mul rGPR:$Rn, rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b000;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-4} = 0b0000; // Multiply
|
|
}
|
|
|
|
def t2MLA: T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32,
|
|
"mla", "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add (mul rGPR:$Rn, rGPR:$Rm), rGPR:$Ra))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b000;
|
|
let Inst{7-4} = 0b0000; // Multiply
|
|
}
|
|
|
|
def t2MLS: T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32,
|
|
"mls", "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (sub rGPR:$Ra, (mul rGPR:$Rn, rGPR:$Rm)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b000;
|
|
let Inst{7-4} = 0b0001; // Multiply and Subtract
|
|
}
|
|
|
|
// Extra precision multiplies with low / high results
|
|
let neverHasSideEffects = 1 in {
|
|
let isCommutable = 1 in {
|
|
def t2SMULL : T2MulLong<0b000, 0b0000,
|
|
(outs rGPR:$Rd, rGPR:$Ra),
|
|
(ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL64,
|
|
"smull", "\t$Rd, $Ra, $Rn, $Rm", []>;
|
|
|
|
def t2UMULL : T2MulLong<0b010, 0b0000,
|
|
(outs rGPR:$RdLo, rGPR:$RdHi),
|
|
(ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL64,
|
|
"umull", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
|
|
} // isCommutable
|
|
|
|
// Multiply + accumulate
|
|
def t2SMLAL : T2MulLong<0b100, 0b0000,
|
|
(outs rGPR:$RdLo, rGPR:$RdHi),
|
|
(ins rGPR:$Rn, rGPR:$Rm), IIC_iMAC64,
|
|
"smlal", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
|
|
|
|
def t2UMLAL : T2MulLong<0b110, 0b0000,
|
|
(outs rGPR:$RdLo, rGPR:$RdHi),
|
|
(ins rGPR:$Rn, rGPR:$Rm), IIC_iMAC64,
|
|
"umlal", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
|
|
|
|
def t2UMAAL : T2MulLong<0b110, 0b0110,
|
|
(outs rGPR:$RdLo, rGPR:$RdHi),
|
|
(ins rGPR:$Rn, rGPR:$Rm), IIC_iMAC64,
|
|
"umaal", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
|
|
} // neverHasSideEffects
|
|
|
|
// Rounding variants of the below included for disassembly only
|
|
|
|
// Most significant word multiply
|
|
def t2SMMUL : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL32,
|
|
"smmul", "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (mulhs rGPR:$Rn, rGPR:$Rm))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-4} = 0b0000; // No Rounding (Inst{4} = 0)
|
|
}
|
|
|
|
def t2SMMULR : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL32,
|
|
"smmulr", "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-4} = 0b0001; // Rounding (Inst{4} = 1)
|
|
}
|
|
|
|
def t2SMMLA : T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32,
|
|
"smmla", "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add (mulhs rGPR:$Rm, rGPR:$Rn), rGPR:$Ra))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{7-4} = 0b0000; // No Rounding (Inst{4} = 0)
|
|
}
|
|
|
|
def t2SMMLAR: T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32,
|
|
"smmlar", "\t$Rd, $Rn, $Rm, $Ra", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b101;
|
|
let Inst{7-4} = 0b0001; // Rounding (Inst{4} = 1)
|
|
}
|
|
|
|
def t2SMMLS: T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32,
|
|
"smmls", "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (sub rGPR:$Ra, (mulhs rGPR:$Rn, rGPR:$Rm)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b110;
|
|
let Inst{7-4} = 0b0000; // No Rounding (Inst{4} = 0)
|
|
}
|
|
|
|
def t2SMMLSR:T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32,
|
|
"smmlsr", "\t$Rd, $Rn, $Rm, $Ra", []> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b110;
|
|
let Inst{7-4} = 0b0001; // Rounding (Inst{4} = 1)
|
|
}
|
|
|
|
multiclass T2I_smul<string opc, PatFrag opnode> {
|
|
def BB : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL16,
|
|
!strconcat(opc, "bb"), "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode (sext_inreg rGPR:$Rn, i16),
|
|
(sext_inreg rGPR:$Rm, i16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def BT : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL16,
|
|
!strconcat(opc, "bt"), "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode (sext_inreg rGPR:$Rn, i16),
|
|
(sra rGPR:$Rm, (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
|
|
def TB : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL16,
|
|
!strconcat(opc, "tb"), "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode (sra rGPR:$Rn, (i32 16)),
|
|
(sext_inreg rGPR:$Rm, i16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b10;
|
|
}
|
|
|
|
def TT : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL16,
|
|
!strconcat(opc, "tt"), "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (opnode (sra rGPR:$Rn, (i32 16)),
|
|
(sra rGPR:$Rm, (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b11;
|
|
}
|
|
|
|
def WB : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL16,
|
|
!strconcat(opc, "wb"), "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (sra (opnode rGPR:$Rn,
|
|
(sext_inreg rGPR:$Rm, i16)), (i32 16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def WT : T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMUL16,
|
|
!strconcat(opc, "wt"), "\t$Rd, $Rn, $Rm",
|
|
[(set rGPR:$Rd, (sra (opnode rGPR:$Rn,
|
|
(sra rGPR:$Rm, (i32 16))), (i32 16)))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{15-12} = 0b1111; // Ra = 0b1111 (no accumulate)
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
}
|
|
|
|
|
|
multiclass T2I_smla<string opc, PatFrag opnode> {
|
|
def BB : T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC16,
|
|
!strconcat(opc, "bb"), "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add rGPR:$Ra,
|
|
(opnode (sext_inreg rGPR:$Rn, i16),
|
|
(sext_inreg rGPR:$Rm, i16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def BT : T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC16,
|
|
!strconcat(opc, "bt"), "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add rGPR:$Ra, (opnode (sext_inreg rGPR:$Rn, i16),
|
|
(sra rGPR:$Rm, (i32 16)))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
|
|
def TB : T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC16,
|
|
!strconcat(opc, "tb"), "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add rGPR:$Ra, (opnode (sra rGPR:$Rn, (i32 16)),
|
|
(sext_inreg rGPR:$Rm, i16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b10;
|
|
}
|
|
|
|
def TT : T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC16,
|
|
!strconcat(opc, "tt"), "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add rGPR:$Ra, (opnode (sra rGPR:$Rn, (i32 16)),
|
|
(sra rGPR:$Rm, (i32 16)))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b001;
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b11;
|
|
}
|
|
|
|
def WB : T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC16,
|
|
!strconcat(opc, "wb"), "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add rGPR:$Ra, (sra (opnode rGPR:$Rn,
|
|
(sext_inreg rGPR:$Rm, i16)), (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b00;
|
|
}
|
|
|
|
def WT : T2FourReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC16,
|
|
!strconcat(opc, "wt"), "\t$Rd, $Rn, $Rm, $Ra",
|
|
[(set rGPR:$Rd, (add rGPR:$Ra, (sra (opnode rGPR:$Rn,
|
|
(sra rGPR:$Rm, (i32 16))), (i32 16))))]> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-23} = 0b0110;
|
|
let Inst{22-20} = 0b011;
|
|
let Inst{7-6} = 0b00;
|
|
let Inst{5-4} = 0b01;
|
|
}
|
|
}
|
|
|
|
defm t2SMUL : T2I_smul<"smul", BinOpFrag<(mul node:$LHS, node:$RHS)>>;
|
|
defm t2SMLA : T2I_smla<"smla", BinOpFrag<(mul node:$LHS, node:$RHS)>>;
|
|
|
|
// Halfword multiple accumulate long: SMLAL<x><y> -- for disassembly only
|
|
def t2SMLALBB : T2FourReg_mac<1, 0b100, 0b1000, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rn,rGPR:$Rm), IIC_iMAC64, "smlalbb", "\t$Ra, $Rd, $Rn, $Rm",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SMLALBT : T2FourReg_mac<1, 0b100, 0b1001, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rn,rGPR:$Rm), IIC_iMAC64, "smlalbt", "\t$Ra, $Rd, $Rn, $Rm",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SMLALTB : T2FourReg_mac<1, 0b100, 0b1010, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rn,rGPR:$Rm), IIC_iMAC64, "smlaltb", "\t$Ra, $Rd, $Rn, $Rm",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SMLALTT : T2FourReg_mac<1, 0b100, 0b1011, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rn,rGPR:$Rm), IIC_iMAC64, "smlaltt", "\t$Ra, $Rd, $Rn, $Rm",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
|
|
// Dual halfword multiple: SMUAD, SMUSD, SMLAD, SMLSD, SMLALD, SMLSLD
|
|
// These are for disassembly only.
|
|
|
|
def t2SMUAD: T2ThreeReg_mac<
|
|
0, 0b010, 0b0000, (outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm),
|
|
IIC_iMAC32, "smuad", "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMUADX:T2ThreeReg_mac<
|
|
0, 0b010, 0b0001, (outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm),
|
|
IIC_iMAC32, "smuadx", "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMUSD: T2ThreeReg_mac<
|
|
0, 0b100, 0b0000, (outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm),
|
|
IIC_iMAC32, "smusd", "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMUSDX:T2ThreeReg_mac<
|
|
0, 0b100, 0b0001, (outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm),
|
|
IIC_iMAC32, "smusdx", "\t$Rd, $Rn, $Rm", []> {
|
|
let Inst{15-12} = 0b1111;
|
|
}
|
|
def t2SMLAD : T2ThreeReg_mac<
|
|
0, 0b010, 0b0000, (outs rGPR:$Rd),
|
|
(ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32, "smlad",
|
|
"\t$Rd, $Rn, $Rm, $Ra", []>;
|
|
def t2SMLADX : T2FourReg_mac<
|
|
0, 0b010, 0b0001, (outs rGPR:$Rd),
|
|
(ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32, "smladx",
|
|
"\t$Rd, $Rn, $Rm, $Ra", []>;
|
|
def t2SMLSD : T2FourReg_mac<0, 0b100, 0b0000, (outs rGPR:$Rd),
|
|
(ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32, "smlsd",
|
|
"\t$Rd, $Rn, $Rm, $Ra", []>;
|
|
def t2SMLSDX : T2FourReg_mac<0, 0b100, 0b0001, (outs rGPR:$Rd),
|
|
(ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), IIC_iMAC32, "smlsdx",
|
|
"\t$Rd, $Rn, $Rm, $Ra", []>;
|
|
def t2SMLALD : T2FourReg_mac<1, 0b100, 0b1100, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rm, rGPR:$Rn), IIC_iMAC64, "smlald",
|
|
"\t$Ra, $Rd, $Rm, $Rn", []>;
|
|
def t2SMLALDX : T2FourReg_mac<1, 0b100, 0b1101, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rm,rGPR:$Rn), IIC_iMAC64, "smlaldx",
|
|
"\t$Ra, $Rd, $Rm, $Rn", []>;
|
|
def t2SMLSLD : T2FourReg_mac<1, 0b101, 0b1100, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rm,rGPR:$Rn), IIC_iMAC64, "smlsld",
|
|
"\t$Ra, $Rd, $Rm, $Rn", []>;
|
|
def t2SMLSLDX : T2FourReg_mac<1, 0b101, 0b1101, (outs rGPR:$Ra,rGPR:$Rd),
|
|
(ins rGPR:$Rm,rGPR:$Rn), IIC_iMAC64, "smlsldx",
|
|
"\t$Ra, $Rd, $Rm, $Rn", []>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Misc. Arithmetic Instructions.
|
|
//
|
|
|
|
class T2I_misc<bits<2> op1, bits<2> op2, dag oops, dag iops,
|
|
InstrItinClass itin, string opc, string asm, list<dag> pattern>
|
|
: T2ThreeReg<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-27} = 0b11111;
|
|
let Inst{26-22} = 0b01010;
|
|
let Inst{21-20} = op1;
|
|
let Inst{15-12} = 0b1111;
|
|
let Inst{7-6} = 0b10;
|
|
let Inst{5-4} = op2;
|
|
let Rn{3-0} = Rm;
|
|
}
|
|
|
|
def t2CLZ : T2I_misc<0b11, 0b00, (outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iUNAr,
|
|
"clz", "\t$Rd, $Rm", [(set rGPR:$Rd, (ctlz rGPR:$Rm))]>;
|
|
|
|
def t2RBIT : T2I_misc<0b01, 0b10, (outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iUNAr,
|
|
"rbit", "\t$Rd, $Rm",
|
|
[(set rGPR:$Rd, (ARMrbit rGPR:$Rm))]>;
|
|
|
|
def t2REV : T2I_misc<0b01, 0b00, (outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iUNAr,
|
|
"rev", ".w\t$Rd, $Rm", [(set rGPR:$Rd, (bswap rGPR:$Rm))]>;
|
|
|
|
def t2REV16 : T2I_misc<0b01, 0b01, (outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iUNAr,
|
|
"rev16", ".w\t$Rd, $Rm",
|
|
[(set rGPR:$Rd,
|
|
(or (and (srl rGPR:$Rm, (i32 8)), 0xFF),
|
|
(or (and (shl rGPR:$Rm, (i32 8)), 0xFF00),
|
|
(or (and (srl rGPR:$Rm, (i32 8)), 0xFF0000),
|
|
(and (shl rGPR:$Rm, (i32 8)), 0xFF000000)))))]>;
|
|
|
|
def t2REVSH : T2I_misc<0b01, 0b11, (outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iUNAr,
|
|
"revsh", ".w\t$Rd, $Rm",
|
|
[(set rGPR:$Rd,
|
|
(sext_inreg
|
|
(or (srl rGPR:$Rm, (i32 8)),
|
|
(shl rGPR:$Rm, (i32 8))), i16))]>;
|
|
|
|
def : T2Pat<(sext_inreg (or (srl (and rGPR:$Rm, 0xFF00), (i32 8)),
|
|
(shl rGPR:$Rm, (i32 8))), i16),
|
|
(t2REVSH rGPR:$Rm)>;
|
|
|
|
def : T2Pat<(sra (bswap rGPR:$Rm), (i32 16)), (t2REVSH rGPR:$Rm)>;
|
|
|
|
def t2PKHBT : T2ThreeReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, shift_imm:$sh),
|
|
IIC_iBITsi, "pkhbt", "\t$Rd, $Rn, $Rm$sh",
|
|
[(set rGPR:$Rd, (or (and rGPR:$Rn, 0xFFFF),
|
|
(and (shl rGPR:$Rm, lsl_amt:$sh),
|
|
0xFFFF0000)))]>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-20} = 0b01100;
|
|
let Inst{5} = 0; // BT form
|
|
let Inst{4} = 0;
|
|
|
|
bits<8> sh;
|
|
let Inst{14-12} = sh{7-5};
|
|
let Inst{7-6} = sh{4-3};
|
|
}
|
|
|
|
// Alternate cases for PKHBT where identities eliminate some nodes.
|
|
def : T2Pat<(or (and rGPR:$src1, 0xFFFF), (and rGPR:$src2, 0xFFFF0000)),
|
|
(t2PKHBT rGPR:$src1, rGPR:$src2, 0)>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]>;
|
|
def : T2Pat<(or (and rGPR:$src1, 0xFFFF), (shl rGPR:$src2, imm16_31:$sh)),
|
|
(t2PKHBT rGPR:$src1, rGPR:$src2, (lsl_shift_imm imm16_31:$sh))>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]>;
|
|
|
|
// Note: Shifts of 1-15 bits will be transformed to srl instead of sra and
|
|
// will match the pattern below.
|
|
def t2PKHTB : T2ThreeReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm, shift_imm:$sh),
|
|
IIC_iBITsi, "pkhtb", "\t$Rd, $Rn, $Rm$sh",
|
|
[(set rGPR:$Rd, (or (and rGPR:$Rn, 0xFFFF0000),
|
|
(and (sra rGPR:$Rm, asr_amt:$sh),
|
|
0xFFFF)))]>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-20} = 0b01100;
|
|
let Inst{5} = 1; // TB form
|
|
let Inst{4} = 0;
|
|
|
|
bits<8> sh;
|
|
let Inst{14-12} = sh{7-5};
|
|
let Inst{7-6} = sh{4-3};
|
|
}
|
|
|
|
// Alternate cases for PKHTB where identities eliminate some nodes. Note that
|
|
// a shift amount of 0 is *not legal* here, it is PKHBT instead.
|
|
def : T2Pat<(or (and rGPR:$src1, 0xFFFF0000), (srl rGPR:$src2, imm16_31:$sh)),
|
|
(t2PKHTB rGPR:$src1, rGPR:$src2, (asr_shift_imm imm16_31:$sh))>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]>;
|
|
def : T2Pat<(or (and rGPR:$src1, 0xFFFF0000),
|
|
(and (srl rGPR:$src2, imm1_15:$sh), 0xFFFF)),
|
|
(t2PKHTB rGPR:$src1, rGPR:$src2, (asr_shift_imm imm1_15:$sh))>,
|
|
Requires<[HasT2ExtractPack, IsThumb2]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Comparison Instructions...
|
|
//
|
|
defm t2CMP : T2I_cmp_irs<0b1101, "cmp",
|
|
IIC_iCMPi, IIC_iCMPr, IIC_iCMPsi,
|
|
BinOpFrag<(ARMcmp node:$LHS, node:$RHS)>>;
|
|
|
|
def : T2Pat<(ARMcmpZ GPR:$lhs, t2_so_imm:$imm),
|
|
(t2CMPri GPR:$lhs, t2_so_imm:$imm)>;
|
|
def : T2Pat<(ARMcmpZ GPR:$lhs, rGPR:$rhs),
|
|
(t2CMPrr GPR:$lhs, rGPR:$rhs)>;
|
|
def : T2Pat<(ARMcmpZ GPR:$lhs, t2_so_reg:$rhs),
|
|
(t2CMPrs GPR:$lhs, t2_so_reg:$rhs)>;
|
|
|
|
//FIXME: Disable CMN, as CCodes are backwards from compare expectations
|
|
// Compare-to-zero still works out, just not the relationals
|
|
//defm t2CMN : T2I_cmp_irs<0b1000, "cmn",
|
|
// BinOpFrag<(ARMcmp node:$LHS,(ineg node:$RHS))>>;
|
|
defm t2CMNz : T2I_cmp_irs<0b1000, "cmn",
|
|
IIC_iCMPi, IIC_iCMPr, IIC_iCMPsi,
|
|
BinOpFrag<(ARMcmpZ node:$LHS,(ineg node:$RHS))>>;
|
|
|
|
//def : T2Pat<(ARMcmp GPR:$src, t2_so_imm_neg:$imm),
|
|
// (t2CMNri GPR:$src, t2_so_imm_neg:$imm)>;
|
|
|
|
def : T2Pat<(ARMcmpZ GPR:$src, t2_so_imm_neg:$imm),
|
|
(t2CMNzri GPR:$src, t2_so_imm_neg:$imm)>;
|
|
|
|
defm t2TST : T2I_cmp_irs<0b0000, "tst",
|
|
IIC_iTSTi, IIC_iTSTr, IIC_iTSTsi,
|
|
BinOpFrag<(ARMcmpZ (and_su node:$LHS, node:$RHS), 0)>>;
|
|
defm t2TEQ : T2I_cmp_irs<0b0100, "teq",
|
|
IIC_iTSTi, IIC_iTSTr, IIC_iTSTsi,
|
|
BinOpFrag<(ARMcmpZ (xor_su node:$LHS, node:$RHS), 0)>>;
|
|
|
|
// Conditional moves
|
|
// FIXME: should be able to write a pattern for ARMcmov, but can't use
|
|
// a two-value operand where a dag node expects two operands. :(
|
|
let neverHasSideEffects = 1 in {
|
|
def t2MOVCCr : T2TwoReg<
|
|
(outs rGPR:$Rd), (ins rGPR:$false, rGPR:$Rm), IIC_iCMOVr,
|
|
"mov", ".w\t$Rd, $Rm",
|
|
[/*(set rGPR:$Rd, (ARMcmov rGPR:$false, rGPR:$Rm, imm:$cc, CCR:$ccr))*/]>,
|
|
RegConstraint<"$false = $Rd"> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{14-12} = 0b000;
|
|
let Inst{7-4} = 0b0000;
|
|
}
|
|
|
|
let isMoveImm = 1 in
|
|
def t2MOVCCi : T2OneRegImm<(outs rGPR:$Rd), (ins rGPR:$false, t2_so_imm:$imm),
|
|
IIC_iCMOVi, "mov", ".w\t$Rd, $imm",
|
|
[/*(set rGPR:$Rd,(ARMcmov rGPR:$false,t2_so_imm:$imm, imm:$cc, CCR:$ccr))*/]>,
|
|
RegConstraint<"$false = $Rd"> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
let isMoveImm = 1 in
|
|
def t2MOVCCi16 : T2I<(outs rGPR:$Rd), (ins rGPR:$false, i32imm_hilo16:$imm),
|
|
IIC_iCMOVi,
|
|
"movw", "\t$Rd, $imm", []>,
|
|
RegConstraint<"$false = $Rd"> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 1;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{15} = 0;
|
|
|
|
bits<4> Rd;
|
|
bits<16> imm;
|
|
|
|
let Inst{11-8} = Rd;
|
|
let Inst{19-16} = imm{15-12};
|
|
let Inst{26} = imm{11};
|
|
let Inst{14-12} = imm{10-8};
|
|
let Inst{7-0} = imm{7-0};
|
|
}
|
|
|
|
let isMoveImm = 1 in
|
|
def t2MOVCCi32imm : PseudoInst<(outs rGPR:$dst),
|
|
(ins rGPR:$false, i32imm:$src, pred:$p),
|
|
IIC_iCMOVix2, []>, RegConstraint<"$false = $dst">;
|
|
|
|
let isMoveImm = 1 in
|
|
def t2MVNCCi : T2OneRegImm<(outs rGPR:$Rd), (ins rGPR:$false, t2_so_imm:$imm),
|
|
IIC_iCMOVi, "mvn", ".w\t$Rd, $imm",
|
|
[/*(set rGPR:$Rd,(ARMcmov rGPR:$false,t2_so_imm_not:$imm,
|
|
imm:$cc, CCR:$ccr))*/]>,
|
|
RegConstraint<"$false = $Rd"> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{25} = 0;
|
|
let Inst{24-21} = 0b0011;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{15} = 0;
|
|
}
|
|
|
|
class T2I_movcc_sh<bits<2> opcod, dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2TwoRegShiftImm<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b01;
|
|
let Inst{24-21} = 0b0010;
|
|
let Inst{20} = 0; // The S bit.
|
|
let Inst{19-16} = 0b1111; // Rn
|
|
let Inst{5-4} = opcod; // Shift type.
|
|
}
|
|
def t2MOVCClsl : T2I_movcc_sh<0b00, (outs rGPR:$Rd),
|
|
(ins rGPR:$false, rGPR:$Rm, i32imm:$imm),
|
|
IIC_iCMOVsi, "lsl", ".w\t$Rd, $Rm, $imm", []>,
|
|
RegConstraint<"$false = $Rd">;
|
|
def t2MOVCClsr : T2I_movcc_sh<0b01, (outs rGPR:$Rd),
|
|
(ins rGPR:$false, rGPR:$Rm, i32imm:$imm),
|
|
IIC_iCMOVsi, "lsr", ".w\t$Rd, $Rm, $imm", []>,
|
|
RegConstraint<"$false = $Rd">;
|
|
def t2MOVCCasr : T2I_movcc_sh<0b10, (outs rGPR:$Rd),
|
|
(ins rGPR:$false, rGPR:$Rm, i32imm:$imm),
|
|
IIC_iCMOVsi, "asr", ".w\t$Rd, $Rm, $imm", []>,
|
|
RegConstraint<"$false = $Rd">;
|
|
def t2MOVCCror : T2I_movcc_sh<0b11, (outs rGPR:$Rd),
|
|
(ins rGPR:$false, rGPR:$Rm, i32imm:$imm),
|
|
IIC_iCMOVsi, "ror", ".w\t$Rd, $Rm, $imm", []>,
|
|
RegConstraint<"$false = $Rd">;
|
|
} // neverHasSideEffects
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Atomic operations intrinsics
|
|
//
|
|
|
|
// memory barriers protect the atomic sequences
|
|
let hasSideEffects = 1 in {
|
|
def t2DMB : AInoP<(outs), (ins memb_opt:$opt), ThumbFrm, NoItinerary,
|
|
"dmb", "\t$opt", [(ARMMemBarrier (i32 imm:$opt))]>,
|
|
Requires<[IsThumb, HasDB]> {
|
|
bits<4> opt;
|
|
let Inst{31-4} = 0xf3bf8f5;
|
|
let Inst{3-0} = opt;
|
|
}
|
|
}
|
|
|
|
def t2DSB : AInoP<(outs), (ins memb_opt:$opt), ThumbFrm, NoItinerary,
|
|
"dsb", "\t$opt",
|
|
[/* For disassembly only; pattern left blank */]>,
|
|
Requires<[IsThumb, HasDB]> {
|
|
bits<4> opt;
|
|
let Inst{31-4} = 0xf3bf8f4;
|
|
let Inst{3-0} = opt;
|
|
}
|
|
|
|
// ISB has only full system option -- for disassembly only
|
|
def t2ISB : AInoP<(outs), (ins), ThumbFrm, NoItinerary, "isb", "",
|
|
[/* For disassembly only; pattern left blank */]>,
|
|
Requires<[IsThumb2, HasV7]> {
|
|
let Inst{31-4} = 0xf3bf8f6;
|
|
let Inst{3-0} = 0b1111;
|
|
}
|
|
|
|
class T2I_ldrex<bits<2> opcod, dag oops, dag iops, AddrMode am, SizeFlagVal sz,
|
|
InstrItinClass itin, string opc, string asm, string cstr,
|
|
list<dag> pattern, bits<4> rt2 = 0b1111>
|
|
: Thumb2I<oops, iops, am, sz, itin, opc, asm, cstr, pattern> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001101;
|
|
let Inst{11-8} = rt2;
|
|
let Inst{7-6} = 0b01;
|
|
let Inst{5-4} = opcod;
|
|
let Inst{3-0} = 0b1111;
|
|
|
|
bits<4> addr;
|
|
bits<4> Rt;
|
|
let Inst{19-16} = addr;
|
|
let Inst{15-12} = Rt;
|
|
}
|
|
class T2I_strex<bits<2> opcod, dag oops, dag iops, AddrMode am, SizeFlagVal sz,
|
|
InstrItinClass itin, string opc, string asm, string cstr,
|
|
list<dag> pattern, bits<4> rt2 = 0b1111>
|
|
: Thumb2I<oops, iops, am, sz, itin, opc, asm, cstr, pattern> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0001100;
|
|
let Inst{11-8} = rt2;
|
|
let Inst{7-6} = 0b01;
|
|
let Inst{5-4} = opcod;
|
|
|
|
bits<4> Rd;
|
|
bits<4> addr;
|
|
bits<4> Rt;
|
|
let Inst{3-0} = Rd;
|
|
let Inst{19-16} = addr;
|
|
let Inst{15-12} = Rt;
|
|
}
|
|
|
|
let mayLoad = 1 in {
|
|
def t2LDREXB : T2I_ldrex<0b00, (outs rGPR:$Rt), (ins t2addrmode_reg:$addr), AddrModeNone,
|
|
Size4Bytes, NoItinerary, "ldrexb", "\t$Rt, $addr",
|
|
"", []>;
|
|
def t2LDREXH : T2I_ldrex<0b01, (outs rGPR:$Rt), (ins t2addrmode_reg:$addr), AddrModeNone,
|
|
Size4Bytes, NoItinerary, "ldrexh", "\t$Rt, $addr",
|
|
"", []>;
|
|
def t2LDREX : Thumb2I<(outs rGPR:$Rt), (ins t2addrmode_reg:$addr), AddrModeNone,
|
|
Size4Bytes, NoItinerary,
|
|
"ldrex", "\t$Rt, $addr", "",
|
|
[]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000101;
|
|
let Inst{11-8} = 0b1111;
|
|
let Inst{7-0} = 0b00000000; // imm8 = 0
|
|
|
|
bits<4> Rt;
|
|
bits<4> addr;
|
|
let Inst{19-16} = addr;
|
|
let Inst{15-12} = Rt;
|
|
}
|
|
def t2LDREXD : T2I_ldrex<0b11, (outs rGPR:$Rt, rGPR:$Rt2), (ins t2addrmode_reg:$addr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"ldrexd", "\t$Rt, $Rt2, $addr", "",
|
|
[], {?, ?, ?, ?}> {
|
|
bits<4> Rt2;
|
|
let Inst{11-8} = Rt2;
|
|
}
|
|
}
|
|
|
|
let mayStore = 1, Constraints = "@earlyclobber $Rd" in {
|
|
def t2STREXB : T2I_strex<0b00, (outs rGPR:$Rd), (ins rGPR:$Rt, t2addrmode_reg:$addr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strexb", "\t$Rd, $Rt, $addr", "", []>;
|
|
def t2STREXH : T2I_strex<0b01, (outs rGPR:$Rd), (ins rGPR:$Rt, t2addrmode_reg:$addr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strexh", "\t$Rd, $Rt, $addr", "", []>;
|
|
def t2STREX : Thumb2I<(outs rGPR:$Rd), (ins rGPR:$Rt, t2addrmode_reg:$addr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strex", "\t$Rd, $Rt, $addr", "",
|
|
[]> {
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-20} = 0b0000100;
|
|
let Inst{7-0} = 0b00000000; // imm8 = 0
|
|
|
|
bits<4> Rd;
|
|
bits<4> addr;
|
|
bits<4> Rt;
|
|
let Inst{11-8} = Rd;
|
|
let Inst{19-16} = addr;
|
|
let Inst{15-12} = Rt;
|
|
}
|
|
def t2STREXD : T2I_strex<0b11, (outs rGPR:$Rd),
|
|
(ins rGPR:$Rt, rGPR:$Rt2, t2addrmode_reg:$addr),
|
|
AddrModeNone, Size4Bytes, NoItinerary,
|
|
"strexd", "\t$Rd, $Rt, $Rt2, $addr", "", [],
|
|
{?, ?, ?, ?}> {
|
|
bits<4> Rt2;
|
|
let Inst{11-8} = Rt2;
|
|
}
|
|
}
|
|
|
|
// Clear-Exclusive is for disassembly only.
|
|
def t2CLREX : T2XI<(outs), (ins), NoItinerary, "clrex",
|
|
[/* For disassembly only; pattern left blank */]>,
|
|
Requires<[IsThumb2, HasV7]> {
|
|
let Inst{31-16} = 0xf3bf;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{13} = 0;
|
|
let Inst{12} = 0;
|
|
let Inst{11-8} = 0b1111;
|
|
let Inst{7-4} = 0b0010;
|
|
let Inst{3-0} = 0b1111;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// TLS Instructions
|
|
//
|
|
|
|
// __aeabi_read_tp preserves the registers r1-r3.
|
|
let isCall = 1,
|
|
Defs = [R0, R12, LR, CPSR], Uses = [SP] in {
|
|
def t2TPsoft : T2XI<(outs), (ins), IIC_Br,
|
|
"bl\t__aeabi_read_tp",
|
|
[(set R0, ARMthread_pointer)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{15-14} = 0b11;
|
|
let Inst{12} = 1;
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// SJLJ Exception handling intrinsics
|
|
// eh_sjlj_setjmp() is an instruction sequence to store the return
|
|
// address and save #0 in R0 for the non-longjmp case.
|
|
// Since by its nature we may be coming from some other function to get
|
|
// here, and we're using the stack frame for the containing function to
|
|
// save/restore registers, we can't keep anything live in regs across
|
|
// the eh_sjlj_setjmp(), else it will almost certainly have been tromped upon
|
|
// when we get here from a longjmp(). We force everything out of registers
|
|
// except for our own input by listing the relevant registers in Defs. By
|
|
// doing so, we also cause the prologue/epilogue code to actively preserve
|
|
// all of the callee-saved resgisters, which is exactly what we want.
|
|
// $val is a scratch register for our use.
|
|
let Defs =
|
|
[ R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, LR, D0,
|
|
D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15,
|
|
D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30,
|
|
D31 ], hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in {
|
|
def t2Int_eh_sjlj_setjmp : Thumb2XI<(outs), (ins tGPR:$src, tGPR:$val),
|
|
AddrModeNone, SizeSpecial, NoItinerary, "", "",
|
|
[(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>,
|
|
Requires<[IsThumb2, HasVFP2]>;
|
|
}
|
|
|
|
let Defs =
|
|
[ R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, LR ],
|
|
hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in {
|
|
def t2Int_eh_sjlj_setjmp_nofp : Thumb2XI<(outs), (ins tGPR:$src, tGPR:$val),
|
|
AddrModeNone, SizeSpecial, NoItinerary, "", "",
|
|
[(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>,
|
|
Requires<[IsThumb2, NoVFP]>;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Control-Flow Instructions
|
|
//
|
|
|
|
// FIXME: remove when we have a way to marking a MI with these properties.
|
|
// FIXME: $dst1 should be a def. But the extra ops must be in the end of the
|
|
// operand list.
|
|
// FIXME: Should pc be an implicit operand like PICADD, etc?
|
|
let isReturn = 1, isTerminator = 1, isBarrier = 1, mayLoad = 1,
|
|
hasExtraDefRegAllocReq = 1, isCodeGenOnly = 1 in
|
|
def t2LDMIA_RET: T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p,
|
|
reglist:$regs, variable_ops),
|
|
IIC_iLoad_mBr,
|
|
"ldmia${p}.w\t$Rn!, $regs",
|
|
"$Rn = $wb", []> {
|
|
bits<4> Rn;
|
|
bits<16> regs;
|
|
|
|
let Inst{31-27} = 0b11101;
|
|
let Inst{26-25} = 0b00;
|
|
let Inst{24-23} = 0b01; // Increment After
|
|
let Inst{22} = 0;
|
|
let Inst{21} = 1; // Writeback
|
|
let Inst{20} = 1;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-0} = regs;
|
|
}
|
|
|
|
let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
|
|
let isPredicable = 1 in
|
|
def t2B : T2XI<(outs), (ins uncondbrtarget:$target), IIC_Br,
|
|
"b.w\t$target",
|
|
[(br bb:$target)]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 1;
|
|
|
|
bits<20> target;
|
|
let Inst{26} = target{19};
|
|
let Inst{11} = target{18};
|
|
let Inst{13} = target{17};
|
|
let Inst{21-16} = target{16-11};
|
|
let Inst{10-0} = target{10-0};
|
|
}
|
|
|
|
let isNotDuplicable = 1, isIndirectBranch = 1 in {
|
|
def t2BR_JT : t2PseudoInst<(outs),
|
|
(ins GPR:$target, GPR:$index, i32imm:$jt, i32imm:$id),
|
|
SizeSpecial, IIC_Br,
|
|
[(ARMbr2jt GPR:$target, GPR:$index, tjumptable:$jt, imm:$id)]>;
|
|
|
|
// FIXME: Add a non-pc based case that can be predicated.
|
|
def t2TBB_JT : t2PseudoInst<(outs),
|
|
(ins GPR:$index, i32imm:$jt, i32imm:$id),
|
|
SizeSpecial, IIC_Br, []>;
|
|
|
|
def t2TBH_JT : t2PseudoInst<(outs),
|
|
(ins GPR:$index, i32imm:$jt, i32imm:$id),
|
|
SizeSpecial, IIC_Br, []>;
|
|
|
|
def t2TBB : T2I<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_Br,
|
|
"tbb", "\t[$Rn, $Rm]", []> {
|
|
bits<4> Rn;
|
|
bits<4> Rm;
|
|
let Inst{31-20} = 0b111010001101;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-5} = 0b11110000000;
|
|
let Inst{4} = 0; // B form
|
|
let Inst{3-0} = Rm;
|
|
}
|
|
|
|
def t2TBH : T2I<(outs), (ins GPR:$Rn, GPR:$Rm), IIC_Br,
|
|
"tbh", "\t[$Rn, $Rm, lsl #1]", []> {
|
|
bits<4> Rn;
|
|
bits<4> Rm;
|
|
let Inst{31-20} = 0b111010001101;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-5} = 0b11110000000;
|
|
let Inst{4} = 1; // H form
|
|
let Inst{3-0} = Rm;
|
|
}
|
|
} // isNotDuplicable, isIndirectBranch
|
|
|
|
} // isBranch, isTerminator, isBarrier
|
|
|
|
// FIXME: should be able to write a pattern for ARMBrcond, but can't use
|
|
// a two-value operand where a dag node expects two operands. :(
|
|
let isBranch = 1, isTerminator = 1 in
|
|
def t2Bcc : T2I<(outs), (ins brtarget:$target), IIC_Br,
|
|
"b", ".w\t$target",
|
|
[/*(ARMbrcond bb:$target, imm:$cc)*/]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
|
|
bits<4> p;
|
|
let Inst{25-22} = p;
|
|
|
|
bits<21> target;
|
|
let Inst{26} = target{20};
|
|
let Inst{11} = target{19};
|
|
let Inst{13} = target{18};
|
|
let Inst{21-16} = target{17-12};
|
|
let Inst{10-0} = target{11-1};
|
|
}
|
|
|
|
|
|
// IT block
|
|
let Defs = [ITSTATE] in
|
|
def t2IT : Thumb2XI<(outs), (ins it_pred:$cc, it_mask:$mask),
|
|
AddrModeNone, Size2Bytes, IIC_iALUx,
|
|
"it$mask\t$cc", "", []> {
|
|
// 16-bit instruction.
|
|
let Inst{31-16} = 0x0000;
|
|
let Inst{15-8} = 0b10111111;
|
|
|
|
bits<4> cc;
|
|
bits<4> mask;
|
|
let Inst{7-4} = cc;
|
|
let Inst{3-0} = mask;
|
|
}
|
|
|
|
// Branch and Exchange Jazelle -- for disassembly only
|
|
// Rm = Inst{19-16}
|
|
def t2BXJ : T2I<(outs), (ins rGPR:$func), NoItinerary, "bxj", "\t$func",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = 0;
|
|
let Inst{25-20} = 0b111100;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
|
|
bits<4> func;
|
|
let Inst{19-16} = func;
|
|
}
|
|
|
|
// Change Processor State is a system instruction -- for disassembly and
|
|
// parsing only.
|
|
// FIXME: Since the asm parser has currently no clean way to handle optional
|
|
// operands, create 3 versions of the same instruction. Once there's a clean
|
|
// framework to represent optional operands, change this behavior.
|
|
class t2CPS<dag iops, string asm_op> : T2XI<(outs), iops, NoItinerary,
|
|
!strconcat("cps", asm_op),
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
bits<2> imod;
|
|
bits<3> iflags;
|
|
bits<5> mode;
|
|
bit M;
|
|
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26} = 0;
|
|
let Inst{25-20} = 0b111010;
|
|
let Inst{19-16} = 0b1111;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
let Inst{10-9} = imod;
|
|
let Inst{8} = M;
|
|
let Inst{7-5} = iflags;
|
|
let Inst{4-0} = mode;
|
|
}
|
|
|
|
let M = 1 in
|
|
def t2CPS3p : t2CPS<(ins imod_op:$imod, iflags_op:$iflags, i32imm:$mode),
|
|
"$imod.w\t$iflags, $mode">;
|
|
let mode = 0, M = 0 in
|
|
def t2CPS2p : t2CPS<(ins imod_op:$imod, iflags_op:$iflags),
|
|
"$imod.w\t$iflags">;
|
|
let imod = 0, iflags = 0, M = 1 in
|
|
def t2CPS1p : t2CPS<(ins i32imm:$mode), "\t$mode">;
|
|
|
|
// A6.3.4 Branches and miscellaneous control
|
|
// Table A6-14 Change Processor State, and hint instructions
|
|
// Helper class for disassembly only.
|
|
class T2I_hint<bits<8> op7_0, string opc, string asm>
|
|
: T2I<(outs), (ins), NoItinerary, opc, asm,
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-20} = 0xf3a;
|
|
let Inst{19-16} = 0b1111;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
let Inst{10-8} = 0b000;
|
|
let Inst{7-0} = op7_0;
|
|
}
|
|
|
|
def t2NOP : T2I_hint<0b00000000, "nop", ".w">;
|
|
def t2YIELD : T2I_hint<0b00000001, "yield", ".w">;
|
|
def t2WFE : T2I_hint<0b00000010, "wfe", ".w">;
|
|
def t2WFI : T2I_hint<0b00000011, "wfi", ".w">;
|
|
def t2SEV : T2I_hint<0b00000100, "sev", ".w">;
|
|
|
|
def t2DBG : T2I<(outs),(ins i32imm:$opt), NoItinerary, "dbg", "\t$opt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-20} = 0xf3a;
|
|
let Inst{15-14} = 0b10;
|
|
let Inst{12} = 0;
|
|
let Inst{10-8} = 0b000;
|
|
let Inst{7-4} = 0b1111;
|
|
|
|
bits<4> opt;
|
|
let Inst{3-0} = opt;
|
|
}
|
|
|
|
// Secure Monitor Call is a system instruction -- for disassembly only
|
|
// Option = Inst{19-16}
|
|
def t2SMC : T2I<(outs), (ins i32imm:$opt), NoItinerary, "smc", "\t$opt",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{31-27} = 0b11110;
|
|
let Inst{26-20} = 0b1111111;
|
|
let Inst{15-12} = 0b1000;
|
|
|
|
bits<4> opt;
|
|
let Inst{19-16} = opt;
|
|
}
|
|
|
|
class T2SRS<bits<12> op31_20,
|
|
dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2I<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-20} = op31_20{11-0};
|
|
|
|
bits<5> mode;
|
|
let Inst{4-0} = mode{4-0};
|
|
}
|
|
|
|
// Store Return State is a system instruction -- for disassembly only
|
|
def t2SRSDBW : T2SRS<0b111010000010,
|
|
(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp!, $mode",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SRSDB : T2SRS<0b111010000000,
|
|
(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp, $mode",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SRSIAW : T2SRS<0b111010011010,
|
|
(outs),(ins i32imm:$mode),NoItinerary,"srsia","\tsp!, $mode",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2SRSIA : T2SRS<0b111010011000,
|
|
(outs), (ins i32imm:$mode),NoItinerary,"srsia","\tsp, $mode",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
|
|
// Return From Exception is a system instruction -- for disassembly only
|
|
|
|
class T2RFE<bits<12> op31_20, dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2I<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-20} = op31_20{11-0};
|
|
|
|
bits<4> Rn;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{15-0} = 0xc000;
|
|
}
|
|
|
|
def t2RFEDBW : T2RFE<0b111010000011,
|
|
(outs), (ins GPR:$Rn), NoItinerary, "rfedb", "\t$Rn!",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2RFEDB : T2RFE<0b111010000001,
|
|
(outs), (ins GPR:$Rn), NoItinerary, "rfedb", "\t$Rn",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2RFEIAW : T2RFE<0b111010011011,
|
|
(outs), (ins GPR:$Rn), NoItinerary, "rfeia", "\t$Rn!",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2RFEIA : T2RFE<0b111010011001,
|
|
(outs), (ins GPR:$Rn), NoItinerary, "rfeia", "\t$Rn",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Non-Instruction Patterns
|
|
//
|
|
|
|
// 32-bit immediate using movw + movt.
|
|
// This is a single pseudo instruction to make it re-materializable.
|
|
// FIXME: Remove this when we can do generalized remat.
|
|
let isReMaterializable = 1, isMoveImm = 1 in
|
|
def t2MOVi32imm : PseudoInst<(outs rGPR:$dst), (ins i32imm:$src), IIC_iMOVix2,
|
|
[(set rGPR:$dst, (i32 imm:$src))]>,
|
|
Requires<[IsThumb, HasV6T2]>;
|
|
|
|
// Pseudo instruction that combines movw + movt + add pc (if pic).
|
|
// It also makes it possible to rematerialize the instructions.
|
|
// FIXME: Remove this when we can do generalized remat and when machine licm
|
|
// can properly the instructions.
|
|
let isReMaterializable = 1 in {
|
|
def t2MOV_ga_pcrel : PseudoInst<(outs rGPR:$dst), (ins i32imm:$addr),
|
|
IIC_iMOVix2addpc,
|
|
[(set rGPR:$dst, (ARMWrapperPIC tglobaladdr:$addr))]>,
|
|
Requires<[IsThumb2, UseMovt]>;
|
|
|
|
def t2MOV_ga_dyn : PseudoInst<(outs rGPR:$dst), (ins i32imm:$addr),
|
|
IIC_iMOVix2,
|
|
[(set rGPR:$dst, (ARMWrapperDYN tglobaladdr:$addr))]>,
|
|
Requires<[IsThumb2, UseMovt]>;
|
|
}
|
|
|
|
// ConstantPool, GlobalAddress, and JumpTable
|
|
def : T2Pat<(ARMWrapper tglobaladdr :$dst), (t2LEApcrel tglobaladdr :$dst)>,
|
|
Requires<[IsThumb2, DontUseMovt]>;
|
|
def : T2Pat<(ARMWrapper tconstpool :$dst), (t2LEApcrel tconstpool :$dst)>;
|
|
def : T2Pat<(ARMWrapper tglobaladdr :$dst), (t2MOVi32imm tglobaladdr :$dst)>,
|
|
Requires<[IsThumb2, UseMovt]>;
|
|
|
|
def : T2Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
|
|
(t2LEApcrelJT tjumptable:$dst, imm:$id)>;
|
|
|
|
// Pseudo instruction that combines ldr from constpool and add pc. This should
|
|
// be expanded into two instructions late to allow if-conversion and
|
|
// scheduling.
|
|
let canFoldAsLoad = 1, isReMaterializable = 1 in
|
|
def t2LDRpci_pic : PseudoInst<(outs rGPR:$dst), (ins i32imm:$addr, pclabel:$cp),
|
|
IIC_iLoadiALU,
|
|
[(set rGPR:$dst, (ARMpic_add (load (ARMWrapper tconstpool:$addr)),
|
|
imm:$cp))]>,
|
|
Requires<[IsThumb2]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Move between special register and ARM core register -- for disassembly only
|
|
//
|
|
|
|
class T2SpecialReg<bits<12> op31_20, bits<2> op15_14, bits<1> op12,
|
|
dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2I<oops, iops, itin, opc, asm, pattern> {
|
|
let Inst{31-20} = op31_20{11-0};
|
|
let Inst{15-14} = op15_14{1-0};
|
|
let Inst{12} = op12{0};
|
|
}
|
|
|
|
class T2MRS<bits<12> op31_20, bits<2> op15_14, bits<1> op12,
|
|
dag oops, dag iops, InstrItinClass itin,
|
|
string opc, string asm, list<dag> pattern>
|
|
: T2SpecialReg<op31_20, op15_14, op12, oops, iops, itin, opc, asm, pattern> {
|
|
bits<4> Rd;
|
|
let Inst{11-8} = Rd;
|
|
let Inst{19-16} = 0b1111;
|
|
}
|
|
|
|
def t2MRS : T2MRS<0b111100111110, 0b10, 0,
|
|
(outs rGPR:$Rd), (ins), NoItinerary, "mrs", "\t$Rd, cpsr",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
def t2MRSsys : T2MRS<0b111100111111, 0b10, 0,
|
|
(outs rGPR:$Rd), (ins), NoItinerary, "mrs", "\t$Rd, spsr",
|
|
[/* For disassembly only; pattern left blank */]>;
|
|
|
|
// Move from ARM core register to Special Register
|
|
//
|
|
// No need to have both system and application versions, the encodings are the
|
|
// same and the assembly parser has no way to distinguish between them. The mask
|
|
// operand contains the special register (R Bit) in bit 4 and bits 3-0 contains
|
|
// the mask with the fields to be accessed in the special register.
|
|
def t2MSR : T2SpecialReg<0b111100111000 /* op31-20 */, 0b10 /* op15-14 */,
|
|
0 /* op12 */, (outs), (ins msr_mask:$mask, rGPR:$Rn),
|
|
NoItinerary, "msr", "\t$mask, $Rn",
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
bits<5> mask;
|
|
bits<4> Rn;
|
|
let Inst{19-16} = Rn;
|
|
let Inst{20} = mask{4}; // R Bit
|
|
let Inst{13} = 0b0;
|
|
let Inst{11-8} = mask{3-0};
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Move between coprocessor and ARM core register -- for disassembly only
|
|
//
|
|
|
|
class t2MovRCopro<string opc, bit direction, dag oops, dag iops>
|
|
: T2Cop<oops, iops, !strconcat(opc, "\t$cop, $opc1, $Rt, $CRn, $CRm, $opc2"),
|
|
[/* For disassembly only; pattern left blank */]> {
|
|
let Inst{27-24} = 0b1110;
|
|
let Inst{20} = direction;
|
|
let Inst{4} = 1;
|
|
|
|
bits<4> Rt;
|
|
bits<4> cop;
|
|
bits<3> opc1;
|
|
bits<3> opc2;
|
|
bits<4> CRm;
|
|
bits<4> CRn;
|
|
|
|
let Inst{15-12} = Rt;
|
|
let Inst{11-8} = cop;
|
|
let Inst{23-21} = opc1;
|
|
let Inst{7-5} = opc2;
|
|
let Inst{3-0} = CRm;
|
|
let Inst{19-16} = CRn;
|
|
}
|
|
|
|
def t2MCR2 : t2MovRCopro<"mcr2", 0 /* from ARM core register to coprocessor */,
|
|
(outs), (ins p_imm:$cop, i32imm:$opc1, GPR:$Rt, c_imm:$CRn,
|
|
c_imm:$CRm, i32imm:$opc2)>;
|
|
def t2MRC2 : t2MovRCopro<"mrc2", 1 /* from coprocessor to ARM core register */,
|
|
(outs GPR:$Rt), (ins p_imm:$cop, i32imm:$opc1, c_imm:$CRn,
|
|
c_imm:$CRm, i32imm:$opc2)>;
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class t2MovRRCopro<string opc, bit direction>
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: T2Cop<(outs), (ins p_imm:$cop, i32imm:$opc1, GPR:$Rt, GPR:$Rt2, c_imm:$CRm),
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!strconcat(opc, "\t$cop, $opc1, $Rt, $Rt2, $CRm"),
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[/* For disassembly only; pattern left blank */]> {
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let Inst{27-24} = 0b1100;
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let Inst{23-21} = 0b010;
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let Inst{20} = direction;
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bits<4> Rt;
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bits<4> Rt2;
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bits<4> cop;
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bits<4> opc1;
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bits<4> CRm;
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let Inst{15-12} = Rt;
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let Inst{19-16} = Rt2;
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let Inst{11-8} = cop;
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let Inst{7-4} = opc1;
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let Inst{3-0} = CRm;
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}
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def t2MCRR2 : t2MovRRCopro<"mcrr2",
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0 /* from ARM core register to coprocessor */>;
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def t2MRRC2 : t2MovRRCopro<"mrrc2",
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1 /* from coprocessor to ARM core register */>;
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//===----------------------------------------------------------------------===//
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// Other Coprocessor Instructions. For disassembly only.
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//
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def t2CDP2 : T2Cop<(outs), (ins p_imm:$cop, i32imm:$opc1,
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c_imm:$CRd, c_imm:$CRn, c_imm:$CRm, i32imm:$opc2),
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"cdp2\t$cop, $opc1, $CRd, $CRn, $CRm, $opc2",
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[/* For disassembly only; pattern left blank */]> {
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let Inst{27-24} = 0b1110;
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bits<4> opc1;
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bits<4> CRn;
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bits<4> CRd;
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bits<4> cop;
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bits<3> opc2;
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bits<4> CRm;
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let Inst{3-0} = CRm;
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let Inst{4} = 0;
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let Inst{7-5} = opc2;
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let Inst{11-8} = cop;
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let Inst{15-12} = CRd;
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let Inst{19-16} = CRn;
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let Inst{23-20} = opc1;
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}
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