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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122815 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich 2011-01-04 18:19:19 +00:00
parent 43b40a4620
commit 64573aecb6
1 changed files with 8 additions and 8 deletions
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16
lib/Transforms/Scalar/LoopInstSimplify.cpp
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@ -33,9 +33,9 @@ namespace {
initializeLoopInstSimplifyPass(*PassRegistry::getPassRegistry());
}
bool runOnFunction(Function&);
bool runOnFunction(Function &);
virtual void getAnalysisUsage(AnalysisUsage& AU) const {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addRequired<LoopInfo>();
AU.addPreserved<LoopInfo>();
@ -57,10 +57,10 @@ Pass* llvm::createLoopInstSimplifyPass() {
return new LoopInstSimplify();
}
bool LoopInstSimplify::runOnFunction(Function& F) {
DominatorTree* DT = getAnalysisIfAvailable<DominatorTree>();
LoopInfo* LI = &getAnalysis<LoopInfo>();
const TargetData* TD = getAnalysisIfAvailable<TargetData>();
bool LoopInstSimplify::runOnFunction(Function &F) {
DominatorTree *DT = getAnalysisIfAvailable<DominatorTree>();
LoopInfo *LI = &getAnalysis<LoopInfo>();
const TargetData *TD = getAnalysisIfAvailable<TargetData>();
bool Changed = false;
bool LocalChanged;
@ -70,10 +70,10 @@ bool LoopInstSimplify::runOnFunction(Function& F) {
for (df_iterator<BasicBlock*> DI = df_begin(&F.getEntryBlock()),
DE = df_end(&F.getEntryBlock()); DI != DE; ++DI)
for (BasicBlock::iterator BI = DI->begin(), BE = DI->end(); BI != BE;) {
Instruction* I = BI++;
Instruction *I = BI++;
// Don't bother simplifying unused instructions.
if (!I->use_empty()) {
Value* V = SimplifyInstruction(I, TD, DT);
Value *V = SimplifyInstruction(I, TD, DT);
if (V && LI->replacementPreservesLCSSAForm(I, V)) {
I->replaceAllUsesWith(V);
LocalChanged = true;