Patch to make some xforms preserve each other. Patch contributed by
Domagoj Babic!
llvm-svn: 28181
diff --git a/llvm/lib/Transforms/Scalar/LowerAllocations.cpp b/llvm/lib/Transforms/Scalar/LowerAllocations.cpp
index 0a6dc09..f6e70e1 100644
--- a/llvm/lib/Transforms/Scalar/LowerAllocations.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerAllocations.cpp
@@ -13,6 +13,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Utils/UnifyFunctionExitNodes.h"
#include "llvm/Module.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Instructions.h"
@@ -39,6 +40,12 @@
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<TargetData>();
AU.setPreservesCFG();
+
+ // This is a cluster of orthogonal Transforms:
+ AU.addPreserved<UnifyFunctionExitNodes>();
+ AU.addPreservedID(PromoteMemoryToRegisterID);
+ AU.addPreservedID(LowerSelectID);
+ AU.addPreservedID(LowerSwitchID);
}
/// doPassInitialization - For the lower allocations pass, this ensures that