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Relax LDA memory instruction checks.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74439 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andreas Bolka 2009-06-29 18:51:11 +00:00
parent 1970a89a49
commit 2fbb770d40
1 changed files with 7 additions and 4 deletions
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11
lib/Analysis/LoopDependenceAnalysis.cpp
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@ -36,8 +36,9 @@ char LoopDependenceAnalysis::ID = 0;
// Utility Functions
//===----------------------------------------------------------------------===//
static inline bool IsMemRefInstr(const Value *I) {
return isa<LoadInst>(I) || isa<StoreInst>(I);
static inline bool IsMemRefInstr(const Value *V) {
const Instruction *I = dyn_cast<const Instruction>(V);
return I && (I->mayReadFromMemory() || I->mayWriteToMemory());
}
static void GetMemRefInstrs(
@ -56,8 +57,10 @@ static void GetMemRefInstrs(
bool LoopDependenceAnalysis::isDependencePair(const Value *x,
const Value *y) const {
return IsMemRefInstr(x) && IsMemRefInstr(y)
&& (isa<StoreInst>(x) || isa<StoreInst>(y));
return IsMemRefInstr(x) &&
IsMemRefInstr(y) &&
(cast<const Instruction>(x)->mayWriteToMemory() ||
cast<const Instruction>(y)->mayWriteToMemory());
}
bool LoopDependenceAnalysis::depends(Value *src, Value *dst) {