6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-19 02:25:01 +00:00
Code Issues Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

10
lib/Transforms/Utils/PromoteMemoryToRegister.cpp
View File

@@ -290,9 +290,15 @@ void PromoteMem2Reg::run() {
// Finally, after the scan, check to see if the store is all that is left. // Finally, after the scan, check to see if the store is all that is left.
if (Info.UsingBlocks.empty()) { 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. // The alloca has been processed, move on.
RemoveFromAllocasList(AllocaNum); RemoveFromAllocasList(AllocaNum);
++NumSingleStore;
continue; continue;
} }
} }
@@ -728,7 +734,7 @@ PromoteLocallyUsedAllocas(BasicBlock *BB, const std::vector<AllocaInst*> &AIs) {
if (AIt != CurValues.end()) { if (AIt != CurValues.end()) {
// Store updates the "current value"... // Store updates the "current value"...
AIt->second = SI->getOperand(0); AIt->second = SI->getOperand(0);
BB->getInstList().erase(SI); SI->eraseFromParent();
} }
} }
} }