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Don't reload the values that are already there. The llvm.eh.resume uses the same

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values that the resume instruction uses.
PR10850

llvm-svn: 139076
This commit is contained in:
Bill Wendling 2011-09-03 01:38:17 +00:00
parent 8b968beebd
commit c273c3f456
1 changed files with 4 additions and 7 deletions
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11
lib/VMCore/AutoUpgrade.cpp
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@ -510,18 +510,15 @@ void llvm::UpgradeExceptionHandling(Module *M) {
while (!EHResume->use_empty()) {
CallInst *Resume = cast<CallInst>(EHResume->use_back());
BasicBlock *BB = Resume->getParent();
Function *Fn = BB->getParent();
std::pair<Value*, Value*> &ExnSel = FnToLPadSlotMap[Fn];
IRBuilder<> Builder(Context);
Builder.SetInsertPoint(BB, Resume);
Value *Exn = Builder.CreateLoad(ExnSel.first, "exn");
Value *Sel = Builder.CreateLoad(ExnSel.second, "sel");
Value *LPadVal =
Builder.CreateInsertValue(UndefValue::get(LPadSlotTy),
Exn, 0, "lpad.val");
LPadVal = Builder.CreateInsertValue(LPadVal, Sel, 1, "lpad.val");
Resume->getArgOperand(0), 0, "lpad.val");
LPadVal = Builder.CreateInsertValue(LPadVal, Resume->getArgOperand(1),
1, "lpad.val");
Builder.CreateResume(LPadVal);
// Remove all instructions after the 'resume.'