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Add support for removing invoke instructions

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llvm-svn: 12858
This commit is contained in:
Chris Lattner 2004-04-12 05:15:13 +00:00
parent af22e5f826
commit 603d821596
1 changed files with 14 additions and 0 deletions
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14
lib/Transforms/Scalar/GCSE.cpp
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@ -167,6 +167,13 @@ void GCSE::ReplaceInstructionWith(Instruction *I, Value *V) {
// anything special.
if (!isa<Constant>(V)) {
I->replaceAllUsesWith(V);
if (InvokeInst *II = dyn_cast<InvokeInst>(I)) {
// Removing an invoke instruction requires adding a branch to the normal
// destination and removing PHI node entries in the exception destination.
new BranchInst(II->getNormalDest(), II);
II->getUnwindDest()->removePredecessor(II->getParent());
}
// Erase the instruction from the program.
I->getParent()->getInstList().erase(I);
@ -179,6 +186,13 @@ void GCSE::ReplaceInstructionWith(Instruction *I, Value *V) {
// Perform the replacement.
I->replaceAllUsesWith(C);
if (InvokeInst *II = dyn_cast<InvokeInst>(I)) {
// Removing an invoke instruction requires adding a branch to the normal
// destination and removing PHI node entries in the exception destination.
new BranchInst(II->getNormalDest(), II);
II->getUnwindDest()->removePredecessor(II->getParent());
}
// Erase the instruction from the program.
I->getParent()->getInstList().erase(I);