Author: lattner
Date: Fri Aug 3 21:38:38 2007
New Revision: 40812
URL: http://llvm.org/viewvc/llvm-project?rev=40812&view=rev
Log:
When we do the single-store optimization, delete both the store
and the alloca so they don't get reprocessed.
This speeds up PR1432 from 2.20s to 2.17s.
Modified:
llvm/trunk/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
Modified: llvm/trunk/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/PromoteMemoryToRegister.cpp?rev=40812&r1=40811&r2=40812&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Utils/PromoteMemoryToRegister.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/PromoteMemoryToRegister.cpp Fri Aug 3
21:38:38 2007
@@ -290,9 +290,15 @@
// 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 @@
if (AIt != CurValues.end()) {
// Store updates the "current value"...
AIt->second = SI->getOperand(0);
- BB->getInstList().erase(SI);
+ SI->eraseFromParent();
}
}
}
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