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Preserve tail marker

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21737 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-05-06 06:48:21 +00:00
parent 1b49141821
commit a9e9211bbb
3 changed files with 7 additions and 4 deletions
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2
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -4232,6 +4232,8 @@ bool InstCombiner::transformConstExprCastCall(CallSite CS) {
Args, Caller->getName(), Caller); Args, Caller->getName(), Caller);
} else { } else {
NC = new CallInst(Callee, Args, Caller->getName(), Caller); NC = new CallInst(Callee, Args, Caller->getName(), Caller);
if (cast<CallInst>(Caller)->isTailCall())
cast<CallInst>(NC)->setTailCall();
} }
// Insert a cast of the return type as necessary... // Insert a cast of the return type as necessary...

3
lib/Transforms/Utils/LowerAllocations.cpp
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@ -150,6 +150,7 @@ bool LowerAllocations::runOnBasicBlock(BasicBlock &BB) {
// Create the call to Malloc... // Create the call to Malloc...
CallInst *MCall = new CallInst(MallocFunc, MallocArgs, "", I); CallInst *MCall = new CallInst(MallocFunc, MallocArgs, "", I);
MCall->setTailCall();
// Create a cast instruction to convert to the right type... // Create a cast instruction to convert to the right type...
Value *MCast; Value *MCast;
@ -180,7 +181,7 @@ bool LowerAllocations::runOnBasicBlock(BasicBlock &BB) {
FreeArgs.push_back(Constant::getNullValue(FreeFTy->getParamType(i))); FreeArgs.push_back(Constant::getNullValue(FreeFTy->getParamType(i)));
// Insert a call to the free function... // Insert a call to the free function...
new CallInst(FreeFunc, FreeArgs, "", I); (new CallInst(FreeFunc, FreeArgs, "", I))->setTailCall();
// Delete the old free instruction // Delete the old free instruction
I = --BBIL.erase(I); I = --BBIL.erase(I);

6
lib/Transforms/Utils/LowerInvoke.cpp
View File

@ -195,7 +195,7 @@ void LowerInvoke::writeAbortMessage(Instruction *IB) {
Args[i] = ConstantExpr::getCast(cast<Constant>(Args[i]), Args[i] = ConstantExpr::getCast(cast<Constant>(Args[i]),
FT->getParamType(i)); FT->getParamType(i));
new CallInst(WriteFn, Args, "", IB); (new CallInst(WriteFn, Args, "", IB))->setTailCall();
} }
} }
@ -225,7 +225,7 @@ bool LowerInvoke::insertCheapEHSupport(Function &F) {
writeAbortMessage(UI); writeAbortMessage(UI);
// Insert a call to abort() // Insert a call to abort()
new CallInst(AbortFn, std::vector<Value*>(), "", UI); (new CallInst(AbortFn, std::vector<Value*>(), "", UI))->setTailCall();
// Insert a return instruction. This really should be a "barrier", as it // Insert a return instruction. This really should be a "barrier", as it
// is unreachable. // is unreachable.
@ -375,7 +375,7 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
writeAbortMessage(RI); writeAbortMessage(RI);
// Insert a call to abort() // Insert a call to abort()
new CallInst(AbortFn, std::vector<Value*>(), "", RI); (new CallInst(AbortFn, std::vector<Value*>(), "", RI))->setTailCall();
} }
return Changed; return Changed;