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[mips][microMIPS] Implement JALRS16 instruction

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Differential Revision: http://reviews.llvm.org/D5027


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219493 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zoran Jovanovic 2014-10-10 13:22:28 +00:00
parent a560067ac9
commit b581230077
3 changed files with 16 additions and 0 deletions
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1
lib/Target/Mips/AsmParser/MipsAsmParser.cpp
View File

@ -991,6 +991,7 @@ static bool hasShortDelaySlot(unsigned Opcode) {
switch (Opcode) {
case Mips::JALS_MM:
case Mips::JALRS_MM:
case Mips::JALRS16_MM:
case Mips::BGEZALS_MM:
case Mips::BLTZALS_MM:
return true;

10
lib/Target/Mips/MicroMipsInstrInfo.td
View File

@ -119,6 +119,15 @@ class JumpRAddiuStackMM16 :
let isIndirectBranch = 1;
}
// 16-bit Jump and Link (Call) - Short Delay Slot
class JumpLinkRegSMM16<string opstr, RegisterOperand RO> :
MicroMipsInst16<(outs), (ins RO:$rs), !strconcat(opstr, "\t$rs"),
[], IIBranch, FrmR> {
let isCall = 1;
let hasDelaySlot = 1;
let Defs = [RA];
}
// MicroMIPS Jump and Link (Call) - Short Delay Slot
let isCall = 1, hasDelaySlot = 1, Defs = [RA] in {
class JumpLinkMM<string opstr, DAGOperand opnd> :
@ -141,6 +150,7 @@ def MFHI16_MM : MoveFromHILOMM<"mfhi", GPR32Opnd, AC0>, MFHILO_FM_MM16<0x10>;
def MFLO16_MM : MoveFromHILOMM<"mflo", GPR32Opnd, AC0>, MFHILO_FM_MM16<0x12>;
def MOVE16_MM : MoveMM16<"move", GPR32Opnd>, MOVE_FM_MM16<0x03>;
def JALR16_MM : JumpLinkRegMM16<"jalr", GPR32Opnd>, JALR_FM_MM16<0x0e>;
def JALRS16_MM : JumpLinkRegSMM16<"jalrs16", GPR32Opnd>, JALR_FM_MM16<0x0f>;
def JRADDIUSP : JumpRAddiuStackMM16, JRADDIUSP_FM_MM16<0x18>;
class WaitMM<string opstr> :

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

@ -15,6 +15,8 @@
# CHECK-EL: jalr $9 # encoding: [0xc9,0x45]
# CHECK-EL: jraddiusp 20 # encoding: [0x05,0x47]
# CHECK-EL: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK-EL: jalrs16 $9 # encoding: [0xe9,0x45]
# CHECK-EL: move $zero, $zero # encoding: [0x00,0x0c]
#------------------------------------------------------------------------------
# Big endian
#------------------------------------------------------------------------------
@ -24,9 +26,12 @@
# CHECK-EB: jalr $9 # encoding: [0x45,0xc9]
# CHECK-EB: jraddiusp 20 # encoding: [0x47,0x05]
# CHECK-EB: nop # encoding: [0x00,0x00,0x00,0x00]
# CHECK-EB: jalrs16 $9 # encoding: [0x45,0xe9]
# CHECK-EB: move $zero, $zero # encoding: [0x0c,0x00]
mfhi $9
mflo $9
move $25, $1
jalr $9
jraddiusp 20
jalrs16 $9