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Speculative fix for stack-tagging.ll failure. 

Depending on the evaluation order of function call arguments,
the current code may insert a use before def.

llvm-svn: 366375
This commit is contained in:
Evgeniy Stepanov 2019-07-17 21:27:44 +00:00
parent eece5a9d31
commit f45fd429b7
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Target/AArch64/AArch64StackTagging.cpp
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@ -316,8 +316,8 @@ bool AArch64StackTagging::runOnFunction(Function &Fn) {
untagAlloca(AI, Info.LifetimeEnd[0], Size); untagAlloca(AI, Info.LifetimeEnd[0], Size);
} else { } else {
uint64_t Size = Info.AI->getAllocationSizeInBits(*DL).getValue() / 8; uint64_t Size = Info.AI->getAllocationSizeInBits(*DL).getValue() / 8;
tagAlloca(AI, TagPCall->getNextNode(), Value *Ptr = IRB.CreatePointerCast(TagPCall, IRB.getInt8PtrTy());
IRB.CreatePointerCast(TagPCall, IRB.getInt8PtrTy()), Size); tagAlloca(AI, &*IRB.GetInsertPoint(), Ptr, Size);
for (auto &RI : RetVec) { for (auto &RI : RetVec) {
untagAlloca(AI, RI, Size); untagAlloca(AI, RI, Size);
} }