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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.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47213 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth
2008-02-16 14:46:26 +00:00
parent 051bb7b075
commit d497d9fab6
9 changed files with 33 additions and 9 deletions
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4
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; ";