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Do not promote volatile alias sets into registers

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10458 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-12-14 04:52:31 +00:00
parent e26092456a
commit 00ad4a2d17
1 changed files with 1 additions and 1 deletions
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lib/Transforms/Scalar/LICM.cpp
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@@ -647,7 +647,7 @@ void LICM::findPromotableValuesInLoop(
// We can promote this alias set if it has a store, if it is a "Must" alias // We can promote this alias set if it has a store, if it is a "Must" alias
// set, and if the pointer is loop invariant. // set, and if the pointer is loop invariant.
if (!AS.isForwardingAliasSet() && AS.isMod() && AS.isMustAlias() && if (!AS.isForwardingAliasSet() && AS.isMod() && AS.isMustAlias() &&
isLoopInvariant(AS.begin()->first)) { !AS.isVolatile() && isLoopInvariant(AS.begin()->first)) {
assert(AS.begin() != AS.end() && assert(AS.begin() != AS.end() &&
"Must alias set should have at least one pointer element in it!"); "Must alias set should have at least one pointer element in it!");
Value *V = AS.begin()->first; Value *V = AS.begin()->first;