// Register this pass...
char ScalarEvolutionAliasAnalysis::ID = 0;
INITIALIZE_AG_PASS_BEGIN(ScalarEvolutionAliasAnalysis, AliasAnalysis, "scev-aa",
- "ScalarEvolution-based Alias Analysis", false, true, false)
+ "ScalarEvolution-based Alias Analysis", false, true,
+ false)
INITIALIZE_PASS_DEPENDENCY(ScalarEvolution)
INITIALIZE_AG_PASS_END(ScalarEvolutionAliasAnalysis, AliasAnalysis, "scev-aa",
- "ScalarEvolution-based Alias Analysis", false, true, false)
+ "ScalarEvolution-based Alias Analysis", false, true,
+ false)
FunctionPass *llvm::createScalarEvolutionAliasAnalysisPass() {
return new ScalarEvolutionAliasAnalysis();
}
-void
-ScalarEvolutionAliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
+void ScalarEvolutionAliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequiredTransitive<ScalarEvolution>();
AU.setPreservesAll();
AliasAnalysis::getAnalysisUsage(AU);
}
-bool
-ScalarEvolutionAliasAnalysis::runOnFunction(Function &F) {
+bool ScalarEvolutionAliasAnalysis::runOnFunction(Function &F) {
InitializeAliasAnalysis(this, &F.getParent()->getDataLayout());
SE = &getAnalysis<ScalarEvolution>();
return false;
/// GetBaseValue - Given an expression, try to find a
/// base value. Return null is none was found.
-Value *
-ScalarEvolutionAliasAnalysis::GetBaseValue(const SCEV *S) {
+Value *ScalarEvolutionAliasAnalysis::GetBaseValue(const SCEV *S) {
if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(S)) {
// In an addrec, assume that the base will be in the start, rather
// than the step.
return GetBaseValue(AR->getStart());
} else if (const SCEVAddExpr *A = dyn_cast<SCEVAddExpr>(S)) {
// If there's a pointer operand, it'll be sorted at the end of the list.
- const SCEV *Last = A->getOperand(A->getNumOperands()-1);
+ const SCEV *Last = A->getOperand(A->getNumOperands() - 1);
if (Last->getType()->isPointerTy())
return GetBaseValue(Last);
} else if (const SCEVUnknown *U = dyn_cast<SCEVUnknown>(S)) {
const SCEV *BS = SE->getSCEV(const_cast<Value *>(LocB.Ptr));
// If they evaluate to the same expression, it's a MustAlias.
- if (AS == BS) return MustAlias;
+ if (AS == BS)
+ return MustAlias;
// If something is known about the difference between the two addresses,
// see if it's enough to prove a NoAlias.