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When we do the single-store optimization, delete both the store

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and the alloca so they don't get reprocessed.

This speeds up PR1432 from 2.20s to 2.17s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40812 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-08-04 02:38:38 +00:00
parent d0458e5d4f
commit 4f63e76cda
1 changed files with 8 additions and 2 deletions
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10
lib/Transforms/Utils/PromoteMemoryToRegister.cpp
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@ -290,9 +290,15 @@ void PromoteMem2Reg::run() {
// Finally, after the scan, check to see if the store is all that is left.
if (Info.UsingBlocks.empty()) {
++NumSingleStore;
// Remove the (now dead) store and alloca.
Info.OnlyStore->eraseFromParent();
if (AST) AST->deleteValue(AI);
AI->eraseFromParent();
// The alloca has been processed, move on.
RemoveFromAllocasList(AllocaNum);
++NumSingleStore;
continue;
}
}
@ -728,7 +734,7 @@ PromoteLocallyUsedAllocas(BasicBlock *BB, const std::vector<AllocaInst*> &AIs) {
if (AIt != CurValues.end()) {
// Store updates the "current value"...
AIt->second = SI->getOperand(0);
BB->getInstList().erase(SI);
SI->eraseFromParent();
}
}
}