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[IndVars] Fix adding trunc instructions to unwind blocks 

Truncate instruction must not be inserted before landing pads.
The insertion point is fixed.
This commit is contained in:
Yevgeny Rouban 2020-12-18 12:47:13 +07:00
parent d3bf0bb189
commit f0e3d1d6ca
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/Transforms/Utils/SimplifyIndVar.cpp
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@ -1654,7 +1654,7 @@ bool WidenIV::widenWithVariantUse(WidenIV::NarrowIVDefUse DU) {
assert(LoopExitingBlock && L->contains(LoopExitingBlock) &&
"Not a LCSSA Phi?");
WidePN->addIncoming(WideBO, LoopExitingBlock);
Builder.SetInsertPoint(User->getParent()->getFirstNonPHI());
Builder.SetInsertPoint(&*User->getParent()->getFirstInsertionPt());
auto *TruncPN = Builder.CreateTrunc(WidePN, User->getType());
User->replaceAllUsesWith(TruncPN);
DeadInsts.emplace_back(User);