From 1dafaa87d9c3b25f53bd18cab18725dd1d76023e Mon Sep 17 00:00:00 2001 From: Max Kazantsev Date: Wed, 29 Aug 2018 11:37:34 +0000 Subject: [NFC] Unify guards detection We have multiple places in code where we try to identify whether or not some instruction is a guard. This patch factors out this logic into a separate utility function which works uniformly in all places. Differential Revision: https://reviews.llvm.org/D51152 Reviewed By: fedor.sergeev llvm-svn: 340921 --- llvm/lib/Analysis/AliasSetTracker.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'llvm/lib/Analysis/AliasSetTracker.cpp') diff --git a/llvm/lib/Analysis/AliasSetTracker.cpp b/llvm/lib/Analysis/AliasSetTracker.cpp index 377db8a569f..fd9263fcf19 100644 --- a/llvm/lib/Analysis/AliasSetTracker.cpp +++ b/llvm/lib/Analysis/AliasSetTracker.cpp @@ -34,6 +34,7 @@ #include "llvm/Support/Debug.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/raw_ostream.h" +#include "llvm/Transforms/Utils/GuardUtils.h" #include #include #include @@ -172,8 +173,7 @@ void AliasSet::addUnknownInst(Instruction *I, AliasAnalysis &AA) { // Guards are marked as modifying memory for control flow modelling purposes, // but don't actually modify any specific memory location. using namespace PatternMatch; - bool MayWriteMemory = I->mayWriteToMemory() && - !match(I, m_Intrinsic()) && + bool MayWriteMemory = I->mayWriteToMemory() && !isGuard(I) && !(I->use_empty() && match(I, m_Intrinsic())); if (!MayWriteMemory) { Alias = SetMayAlias; -- cgit v1.2.3