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[mips][microMIPS] Implement JR16 instruction

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Differential Revision: http://reviews.llvm.org/D5062


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219498 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zoran Jovanovic 2014-10-10 14:02:44 +00:00
parent e2db3024be
commit 24335e60c7
2 changed files with 15 additions and 0 deletions
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10
lib/Target/Mips/MicroMipsInstrInfo.td
View File

@ -117,6 +117,15 @@ class JumpLinkRegMM16<string opstr, RegisterOperand RO> :
let Defs = [RA];
}
// 16-bit Jump Reg
class JumpRegMM16<string opstr, RegisterOperand RO> :
MicroMipsInst16<(outs), (ins RO:$rs), !strconcat(opstr, "\t$rs"),
[], IIBranch, FrmR> {
let hasDelaySlot = 1;
let isBranch = 1;
let isIndirectBranch = 1;
}
// Base class for JRADDIUSP instruction.
class JumpRAddiuStackMM16 :
MicroMipsInst16<(outs), (ins uimm5_lsl2:$imm), "jraddiusp\t$imm",
@ -173,6 +182,7 @@ def JALR16_MM : JumpLinkRegMM16<"jalr", GPR32Opnd>, JALR_FM_MM16<0x0e>;
def JALRS16_MM : JumpLinkRegSMM16<"jalrs16", GPR32Opnd>, JALR_FM_MM16<0x0f>;
def JRC16_MM : JumpRegCMM16<"jrc", GPR32Opnd>, JALR_FM_MM16<0x0d>;
def JRADDIUSP : JumpRAddiuStackMM16, JRADDIUSP_FM_MM16<0x18>;
def JR16_MM : JumpRegMM16<"jr16", GPR32Opnd>, JALR_FM_MM16<0x0c>;
class WaitMM<string opstr> :
InstSE<(outs), (ins uimm10:$code_), !strconcat(opstr, "\t$code_"), [],

5
test/MC/Mips/micromips-16-bit-instructions.s
View File

@ -19,6 +19,8 @@
# CHECK-EL: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK-EL: jalrs16 $9 # encoding: [0xe9,0x45]
# CHECK-EL: move $zero, $zero # encoding: [0x00,0x0c]
# CHECK-EL: jr16 $9 # encoding: [0x89,0x45]
# CHECK-EL: nop # encoding: [0x00,0x00,0x00,0x00]
#------------------------------------------------------------------------------
# Big endian
#------------------------------------------------------------------------------
@ -32,6 +34,8 @@
# CHECK-EB: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK-EB: jalrs16 $9 # encoding: [0x45,0xe9]
# CHECK-EB: move $zero, $zero # encoding: [0x0c,0x00]
# CHECK-EB: jr16 $9 # encoding: [0x45,0x89]
# CHECK-EB: nop # encoding: [0x00,0x00,0x00,0x00]
addius5 $7, -2
mfhi $9
@ -41,3 +45,4 @@
jalr $9
jraddiusp 20
jalrs16 $9
jr16 $9