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Implement Transforms/Inline/inline-tail.ll

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21736 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-05-06 06:47:52 +00:00
parent 2f4251bfbe
commit 1b49141821
1 changed files with 16 additions and 1 deletions
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17
lib/Transforms/Utils/InlineFunction.cpp
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@ -46,6 +46,12 @@ bool llvm::InlineFunction(CallSite CS) {
CalledFunc->isExternal() || // call, or call to a vararg function!
CalledFunc->getFunctionType()->isVarArg()) return false;
// If the call to the callee is a non-tail call, we must clear the 'tail'
// flags on any calls that we inline.
bool MustClearTailCallFlags =
isa<CallInst>(TheCall) || !cast<CallInst>(TheCall)->isTailCall();
BasicBlock *OrigBB = TheCall->getParent();
Function *Caller = OrigBB->getParent();
@ -101,6 +107,15 @@ bool llvm::InlineFunction(CallSite CS) {
}
}
// If we are inlining tail call instruction through an invoke or
if (MustClearTailCallFlags) {
for (Function::iterator BB = FirstNewBlock, E = Caller->end();
BB != E; ++BB)
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I)
if (CallInst *CI = dyn_cast<CallInst>(I))
CI->setTailCall(false);
}
// If we are inlining for an invoke instruction, we must make sure to rewrite
// any inlined 'unwind' instructions into branches to the invoke exception
// destination, and call instructions into invoke instructions.
@ -124,7 +139,7 @@ bool llvm::InlineFunction(CallSite CS) {
// require no special handling...
if (CallInst *CI = dyn_cast<CallInst>(I)) {
// Convert this function call into an invoke instruction... if it's
// not an intrinsic function call (which are known to not throw).
// not an intrinsic function call (which are known to not unwind).
if (CI->getCalledFunction() &&
CI->getCalledFunction()->getIntrinsicID()) {
++I;