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Erase all of the instructions that we RAUWed

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184969 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem
2013-06-26 17:16:09 +00:00
parent 849eedce99
commit e26fa2dd73
2 changed files with 10 additions and 1 deletions
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9
lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -1302,6 +1302,7 @@ void FuncSLP::optimizeGatherSequence() {
// instructions. TODO: We can further optimize this scan if we split the
// instructions into different buckets based on the insert lane.
SmallPtrSet<Instruction*, 16> Visited;
SmallPtrSet<Instruction*, 16> ToRemove;
ReversePostOrderTraversal<Function*> RPOT(F);
for (ReversePostOrderTraversal<Function*>::rpo_iterator I = RPOT.begin(),
E = RPOT.end(); I != E; ++I) {
@ -1319,6 +1320,7 @@ void FuncSLP::optimizeGatherSequence() {
if (Insert->isIdenticalTo(*v) &&
DT->dominates((*v)->getParent(), Insert->getParent())) {
Insert->replaceAllUsesWith(*v);
ToRemove.insert(Insert);
Insert = 0;
break;
}
@ -1327,6 +1329,13 @@ void FuncSLP::optimizeGatherSequence() {
Visited.insert(Insert);
}
}
// Erase all of the instructions that we RAUWed.
for (SmallPtrSet<Instruction*, 16>::iterator v = ToRemove.begin(),
ve = ToRemove.end(); v != ve; ++v) {
assert((*v)->getNumUses() == 0 && "Can't remove instructions with uses");
(*v)->eraseFromParent();
}
}
/// The SLPVectorizer Pass.