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Remove custom inserter for MWAIT. It doesn't do anything that couldn't be represented in a pattern. 

llvm-svn: 161306
This commit is contained in:
Craig Topper 2012-08-05 00:36:57 +00:00
parent 43ee9fae92
commit 6d0408d3a5
2 changed files with 2 additions and 24 deletions
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20
llvm/lib/Target/X86/X86ISelLowering.cpp
View File

@ -11899,24 +11899,6 @@ X86TargetLowering::EmitMonitor(MachineInstr *MI, MachineBasicBlock *BB) const {
return BB;
}
MachineBasicBlock *
X86TargetLowering::EmitMwait(MachineInstr *MI, MachineBasicBlock *BB) const {
DebugLoc dl = MI->getDebugLoc();
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
// First arg in ECX, the second in EAX.
BuildMI(*BB, MI, dl, TII->get(TargetOpcode::COPY), X86::ECX)
.addReg(MI->getOperand(0).getReg());
BuildMI(*BB, MI, dl, TII->get(TargetOpcode::COPY), X86::EAX)
.addReg(MI->getOperand(1).getReg());
// The instruction doesn't actually take any operands though.
BuildMI(*BB, MI, dl, TII->get(X86::MWAITrr));
MI->eraseFromParent(); // The pseudo is gone now.
return BB;
}
MachineBasicBlock *
X86TargetLowering::EmitVAARG64WithCustomInserter(
MachineInstr *MI,
@ -12721,8 +12703,6 @@ X86TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
// Thread synchronization.
case X86::MONITOR:
return EmitMonitor(MI, BB);
case X86::MWAIT:
return EmitMwait(MI, BB);
// Atomic Lowering.
case X86::ATOMAND32:

6
llvm/lib/Target/X86/X86InstrSSE.td
View File

@ -5442,16 +5442,14 @@ let usesCustomInserter = 1 in {
def MONITOR : PseudoI<(outs), (ins i32mem:$src1, GR32:$src2, GR32:$src3),
[(int_x86_sse3_monitor addr:$src1, GR32:$src2, GR32:$src3)]>,
Requires<[HasSSE3]>;
def MWAIT : PseudoI<(outs), (ins GR32:$src1, GR32:$src2),
[(int_x86_sse3_mwait GR32:$src1, GR32:$src2)]>,
Requires<[HasSSE3]>;
}
let Uses = [EAX, ECX, EDX] in
def MONITORrrr : I<0x01, MRM_C8, (outs), (ins), "monitor", [], IIC_SSE_MONITOR>,
TB, Requires<[HasSSE3]>;
let Uses = [ECX, EAX] in
def MWAITrr : I<0x01, MRM_C9, (outs), (ins), "mwait", [], IIC_SSE_MWAIT>,
def MWAITrr : I<0x01, MRM_C9, (outs), (ins), "mwait",
[(int_x86_sse3_mwait ECX, EAX)], IIC_SSE_MWAIT>,
TB, Requires<[HasSSE3]>;
def : InstAlias<"mwait %eax, %ecx", (MWAITrr)>, Requires<[In32BitMode]>;