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Make SROA and PredicateSimplifier cope if TargetData is not

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available. This is very conservative for now.

llvm-svn: 79442
This commit is contained in:
Dan Gohman 2009-08-19 18:22:18 +00:00
parent ba656de4a4
commit e982de2e30
2 changed files with 16 additions and 6 deletions
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10
lib/Transforms/Scalar/PredicateSimplifier.cpp
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@ -2284,8 +2284,6 @@ namespace {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequiredID(BreakCriticalEdgesID);
AU.addRequired<DominatorTree>();
AU.addRequired<TargetData>();
AU.addPreserved<TargetData>();
}
private:
@ -2409,7 +2407,13 @@ namespace {
bool PredicateSimplifier::runOnFunction(Function &F) {
DominatorTree *DT = &getAnalysis<DominatorTree>();
DTDFS = new DomTreeDFS(DT);
TargetData *TD = &getAnalysis<TargetData>();
TargetData *TD = getAnalysisIfAvailable<TargetData>();
// FIXME: PredicateSimplifier should still be able to do basic
// optimizations without TargetData. But for now, just exit if
// it's not available.
if (!TD) return false;
Context = &F.getContext();
DEBUG(errs() << "Entering Function: " << F.getName() << "\n");

12
lib/Transforms/Scalar/ScalarReplAggregates.cpp
View File

@ -68,7 +68,6 @@ namespace {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<DominatorTree>();
AU.addRequired<DominanceFrontier>();
AU.addRequired<TargetData>();
AU.setPreservesCFG();
}
@ -150,9 +149,16 @@ FunctionPass *llvm::createScalarReplAggregatesPass(signed int Threshold) {
bool SROA::runOnFunction(Function &F) {
TD = &getAnalysis<TargetData>();
TD = getAnalysisIfAvailable<TargetData>();
bool Changed = performPromotion(F);
// FIXME: ScalarRepl currently depends on TargetData more than it
// theoretically needs to. It should be refactored in order to support
// target-independent IR. Until this is done, just skip the actual
// scalar-replacement portion of this pass.
if (!TD) return Changed;
while (1) {
bool LocalChange = performScalarRepl(F);
if (!LocalChange) break; // No need to repromote if no scalarrepl