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Add "support" for the llvm.stacksave/stackrestore intrinsics, this is

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used by the C backend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25267 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-13 02:22:08 +00:00
parent 71d0e3de8d
commit 0c067bc11d
1 changed files with 15 additions and 2 deletions
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17
lib/CodeGen/IntrinsicLowering.cpp
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@ -248,6 +248,19 @@ void DefaultIntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
break;
}
case Intrinsic::stacksave:
case Intrinsic::stackrestore: {
static bool Warned = false;
if (!Warned)
std::cerr << "WARNING: this target does not support the llvm.stack"
<< (Callee->getIntrinsicID() == Intrinsic::stacksave ?
"save" : "restore") << " intrinsic.\n";
Warned = true;
if (Callee->getIntrinsicID() == Intrinsic::stacksave)
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
break;
}
case Intrinsic::returnaddress:
case Intrinsic::frameaddress:
std::cerr << "WARNING: this target does not support the llvm."
@ -263,8 +276,8 @@ void DefaultIntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
case Intrinsic::pcmarker:
break; // Simply strip out pcmarker on unsupported architectures
case Intrinsic::readcyclecounter: {
std::cerr << "WARNING: this target does not support the llvm.readcyclecounter"
<< " intrinsic. It is being lowered to a constant 0\n";
std::cerr << "WARNING: this target does not support the llvm.readcyclecoun"
<< "ter intrinsic. It is being lowered to a constant 0\n";
CI->replaceAllUsesWith(ConstantUInt::get(Type::ULongTy, 0));
break;
}