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I cannot find a libgcc function for this builtin. Therefor expanding it to a noop (which is how it use to be treated). If someone who knows the x86 backend better than me could tell me how to get a lock prefix on an instruction, that would be nice to complete x86 support. 

llvm-svn: 47213
This commit is contained in:
Andrew Lenharth 2008-02-16 14:46:26 +00:00
parent b289516a71
commit fedcf477b5
9 changed files with 33 additions and 9 deletions
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10
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -1135,6 +1135,9 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case ISD::MEMBARRIER: {
assert(Node->getNumOperands() == 6 && "Invalid MemBarrier node!");
switch (TLI.getOperationAction(ISD::MEMBARRIER, MVT::Other)) {
default: assert(0 && "This action is not supported yet!");
case TargetLowering::Legal: {
SDOperand Ops[6];
Ops[0] = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
for (int x = 1; x < 6; ++x)
@ -1142,6 +1145,13 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Result = DAG.UpdateNodeOperands(Result, &Ops[0], 6);
break;
}
case TargetLowering::Expand:
//There is no libgcc call for this op
Result = Node->getOperand(0); // Noop
break;
}
break;
}
case ISD::Constant: {
ConstantSDNode *CN = cast<ConstantSDNode>(Node);

1
llvm/lib/Target/ARM/ARMISelLowering.cpp
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@ -210,6 +210,7 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32 , Expand);
setOperationAction(ISD::MEMBARRIER , MVT::Other, Expand);
if (!Subtarget->hasV6Ops()) {
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);

4
llvm/lib/Target/CBackend/CBackend.cpp
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@ -2459,6 +2459,7 @@ void CWriter::lowerIntrinsics(Function &F) {
if (Function *F = CI->getCalledFunction())
switch (F->getIntrinsicID()) {
case Intrinsic::not_intrinsic:
case Intrinsic::memory_barrier:
case Intrinsic::vastart:
case Intrinsic::vacopy:
case Intrinsic::vaend:
@ -2544,6 +2545,9 @@ void CWriter::visitCallInst(CallInst &I) {
WroteCallee = true;
break;
}
case Intrinsic::memory_barrier:
Out << "0; __sync_syncronize()";
return;
case Intrinsic::vastart:
Out << "0; ";

1
llvm/lib/Target/CellSPU/SPUISelLowering.cpp
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@ -181,6 +181,7 @@ SPUTargetLowering::SPUTargetLowering(SPUTargetMachine &TM)
setOperationAction(ISD::MEMMOVE, MVT::Other, Expand);
setOperationAction(ISD::MEMSET, MVT::Other, Expand);
setOperationAction(ISD::MEMCPY, MVT::Other, Expand);
setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
// PowerPC has no SREM/UREM instructions
setOperationAction(ISD::SREM, MVT::i32, Expand);

1
llvm/lib/Target/IA64/IA64ISelLowering.cpp
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@ -69,6 +69,7 @@ IA64TargetLowering::IA64TargetLowering(TargetMachine &TM)
setOperationAction(ISD::MEMMOVE , MVT::Other, Expand);
setOperationAction(ISD::MEMSET , MVT::Other, Expand);
setOperationAction(ISD::MEMCPY , MVT::Other, Expand);
setOperationAction(ISD::MEMBARRIER , MVT::Other, Expand);
setOperationAction(ISD::SINT_TO_FP , MVT::i1 , Promote);
setOperationAction(ISD::UINT_TO_FP , MVT::i1 , Promote);

1
llvm/lib/Target/Mips/MipsISelLowering.cpp
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@ -84,6 +84,7 @@ MipsTargetLowering(MipsTargetMachine &TM): TargetLowering(TM)
setOperationAction(ISD::MEMMOVE, MVT::Other, Expand);
setOperationAction(ISD::MEMSET, MVT::Other, Expand);
setOperationAction(ISD::MEMCPY, MVT::Other, Expand);
setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
setOperationAction(ISD::CTPOP, MVT::i32, Expand);
setOperationAction(ISD::CTTZ , MVT::i32, Expand);

1
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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@ -81,6 +81,7 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM)
setOperationAction(ISD::MEMMOVE, MVT::Other, Expand);
setOperationAction(ISD::MEMSET, MVT::Other, Expand);
setOperationAction(ISD::MEMCPY, MVT::Other, Expand);
setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
// PowerPC has no SREM/UREM instructions
setOperationAction(ISD::SREM, MVT::i32, Expand);

1
llvm/lib/Target/Sparc/SparcISelDAGToDAG.cpp
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@ -195,6 +195,7 @@ SparcTargetLowering::SparcTargetLowering(TargetMachine &TM)
setOperationAction(ISD::MEMMOVE, MVT::Other, Expand);
setOperationAction(ISD::MEMSET, MVT::Other, Expand);
setOperationAction(ISD::MEMCPY, MVT::Other, Expand);
setOperationAction(ISD::MEMBARRIER, MVT::Other, Expand);
setOperationAction(ISD::FSIN , MVT::f64, Expand);
setOperationAction(ISD::FCOS , MVT::f64, Expand);

4
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -281,6 +281,10 @@ X86TargetLowering::X86TargetLowering(TargetMachine &TM)
setOperationAction(ISD::MEMSET , MVT::Other, Custom);
setOperationAction(ISD::MEMCPY , MVT::Other, Custom);
if (!Subtarget->hasSSE2())
setOperationAction(ISD::MEMBARRIER , MVT::Other, Expand);
// Use the default ISD::LOCATION, ISD::DECLARE expansion.
setOperationAction(ISD::LOCATION, MVT::Other, Expand);
// FIXME - use subtarget debug flags