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Add memory operand folding for CMP{rm,mr,mi}{8,16,32}, INCm{8,16,32}

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and DECm{8,16,32} instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11545 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos 2004-02-17 08:49:20 +00:00
parent 509d6d65b5
commit 89b0214b76
1 changed files with 21 additions and 0 deletions
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21
lib/Target/X86/X86RegisterInfo.cpp
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@ -87,6 +87,12 @@ int X86RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
return 1;
}
static MachineInstr *MakeMInst(unsigned Opcode, unsigned FrameIndex,
MachineInstr *MI) {
return addFrameReference(BuildMI(Opcode, 1, MI->getOperand(0).getReg()),
FrameIndex);
}
static MachineInstr *MakeMRInst(unsigned Opcode, unsigned FrameIndex,
MachineInstr *MI) {
return addFrameReference(BuildMI(Opcode, 5), FrameIndex)
@ -128,6 +134,12 @@ bool X86RegisterInfo::foldMemoryOperand(MachineBasicBlock::iterator &MI,
case X86::MOVri8: NI = MakeMIInst(X86::MOVmi8 , FrameIndex, MI); break;
case X86::MOVri16: NI = MakeMIInst(X86::MOVmi16, FrameIndex, MI); break;
case X86::MOVri32: NI = MakeMIInst(X86::MOVmi32, FrameIndex, MI); break;
case X86::INCr8: NI = MakeMInst(X86::INCm8 , FrameIndex, MI); break;
case X86::INCr16: NI = MakeMInst(X86::INCm16, FrameIndex, MI); break;
case X86::INCr32: NI = MakeMInst(X86::INCm32, FrameIndex, MI); break;
case X86::DECr8: NI = MakeMInst(X86::DECm8 , FrameIndex, MI); break;
case X86::DECr16: NI = MakeMInst(X86::DECm16, FrameIndex, MI); break;
case X86::DECr32: NI = MakeMInst(X86::DECm32, FrameIndex, MI); break;
case X86::ADDrr8: NI = MakeMRInst(X86::ADDmr8 , FrameIndex, MI); break;
case X86::ADDrr16: NI = MakeMRInst(X86::ADDmr16, FrameIndex, MI); break;
case X86::ADDrr32: NI = MakeMRInst(X86::ADDmr32, FrameIndex, MI); break;
@ -148,6 +160,12 @@ bool X86RegisterInfo::foldMemoryOperand(MachineBasicBlock::iterator &MI,
case X86::ANDri8: NI = MakeMIInst(X86::ANDmi8 , FrameIndex, MI); break;
case X86::ANDri16: NI = MakeMIInst(X86::ANDmi16, FrameIndex, MI); break;
case X86::ANDri32: NI = MakeMIInst(X86::ANDmi32, FrameIndex, MI); break;
case X86::CMPrr8: NI = MakeMRInst(X86::CMPmr8 , FrameIndex, MI); break;
case X86::CMPrr16: NI = MakeMRInst(X86::CMPmr16, FrameIndex, MI); break;
case X86::CMPrr32: NI = MakeMRInst(X86::CMPmr32, FrameIndex, MI); break;
case X86::CMPri8: NI = MakeMIInst(X86::CMPmi8 , FrameIndex, MI); break;
case X86::CMPri16: NI = MakeMIInst(X86::CMPmi16, FrameIndex, MI); break;
case X86::CMPri32: NI = MakeMIInst(X86::CMPmi32, FrameIndex, MI); break;
default: break; // Cannot fold
}
} else if (i == 1) {
@ -170,6 +188,9 @@ bool X86RegisterInfo::foldMemoryOperand(MachineBasicBlock::iterator &MI,
case X86::IMULrr32:NI = MakeRMInst(X86::IMULrm32, FrameIndex, MI); break;
case X86::IMULrri16: NI = MakeRMIInst(X86::IMULrmi16, FrameIndex, MI);break;
case X86::IMULrri32: NI = MakeRMIInst(X86::IMULrmi32, FrameIndex, MI);break;
case X86::CMPrr8: NI = MakeRMInst(X86::CMPrm8 , FrameIndex, MI); break;
case X86::CMPrr16: NI = MakeRMInst(X86::CMPrm16, FrameIndex, MI); break;
case X86::CMPrr32: NI = MakeRMInst(X86::CMPrm32, FrameIndex, MI); break;
default: break;
}
}