[llvm-commits] CVS: llvm/lib/Transforms/Scalar/PromoteMemoryToRegister.cpp
Chris Lattner
lattner at cs.uiuc.edu
Tue Sep 24 16:20:00 PDT 2002
Changes in directory llvm/lib/Transforms/Scalar:
PromoteMemoryToRegister.cpp updated: 1.30 -> 1.31
---
Log message:
- Fix bug: Mem2Reg/2002-05-01-ShouldNotPromoteThisAlloca.ll
---
Diffs of the changes:
Index: llvm/lib/Transforms/Scalar/PromoteMemoryToRegister.cpp
diff -u llvm/lib/Transforms/Scalar/PromoteMemoryToRegister.cpp:1.30 llvm/lib/Transforms/Scalar/PromoteMemoryToRegister.cpp:1.31
--- llvm/lib/Transforms/Scalar/PromoteMemoryToRegister.cpp:1.30 Tue Sep 10 17:38:47 2002
+++ llvm/lib/Transforms/Scalar/PromoteMemoryToRegister.cpp Tue Sep 24 16:19:41 2002
@@ -79,8 +79,13 @@
// Only allow direct loads and stores...
for (Value::use_const_iterator UI = AI->use_begin(), UE = AI->use_end();
UI != UE; ++UI) // Loop over all of the uses of the alloca
- if (!isa<LoadInst>(*UI) && !isa<StoreInst>(*UI))
- return false; // Not a load or store?
+ if (!isa<LoadInst>(*UI))
+ if (const StoreInst *SI = dyn_cast<StoreInst>(*UI)) {
+ if (SI->getOperand(0) == AI)
+ return false; // Don't allow a store of the AI, only INTO the AI.
+ } else {
+ return false; // Not a load or store?
+ }
return true;
}
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