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Fix comment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89129 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2009-11-17 19:19:01 +00:00
parent 95a2c8f1d0
commit 7adcdc313f
1 changed files with 3 additions and 3 deletions
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6
lib/CodeGen/MachineLICM.cpp
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@ -242,9 +242,9 @@ bool MachineLICM::IsLoopInvariantInst(MachineInstr &I) {
// to decide whether the loaded value is actually a constant. If so, we can
// actually use it as a load.
if (!I.isInvariantLoad(AA))
// FIXME: we should be able to sink loads with no other side effects if
// there is nothing that can change memory from here until the end of
// block. This is a trivial form of alias analysis.
// FIXME: we should be able to hoist loads with no other side effects if
// there are no other instructions which can change memory in this loop.
// This is a trivial form of alias analysis.
return false;
}