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Add comment to clarify the behavior of a helper in DSE.

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llvm-svn: 139571
This commit is contained in:
Eli Friedman 2011-09-13 01:28:59 +00:00
parent ce1cbc7db5
commit 3f92f87989
1 changed files with 2 additions and 0 deletions
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2
lib/Transforms/Scalar/DeadStoreElimination.cpp
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@ -159,6 +159,8 @@ static bool hasMemoryWrite(Instruction *I) {
}
/// getLocForWrite - Return a Location stored to by the specified instruction.
/// If isRemovable returns true, this function and getLocForRead completely
/// describe the memory operations for this instruction.
static AliasAnalysis::Location
getLocForWrite(Instruction *Inst, AliasAnalysis &AA) {
if (StoreInst *SI = dyn_cast<StoreInst>(Inst))