TBAA-enable ArgumentPromotion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118804 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/ArgumentPromotion.cpp b/lib/Transforms/IPO/ArgumentPromotion.cpp
index 7591a02..78d9f18 100644
--- a/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -39,7 +39,6 @@
#include "llvm/LLVMContext.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/CallGraph.h"
-#include "llvm/Target/TargetData.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/CFG.h"
#include "llvm/Support/Debug.h"
@@ -440,8 +439,6 @@
SmallPtrSet<BasicBlock*, 16> TranspBlocks;
AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
- TargetData *TD = getAnalysisIfAvailable<TargetData>();
- if (!TD) return false; // Without TargetData, assume the worst.
for (unsigned i = 0, e = Loads.size(); i != e; ++i) {
// Check to see if the load is invalidated from the start of the block to
@@ -449,11 +446,11 @@
LoadInst *Load = Loads[i];
BasicBlock *BB = Load->getParent();
- const PointerType *LoadTy =
- cast<PointerType>(Load->getPointerOperand()->getType());
- uint64_t LoadSize = TD->getTypeStoreSize(LoadTy->getElementType());
+ AliasAnalysis::Location Loc(Load->getPointerOperand(),
+ AA.getTypeStoreSize(Load->getType()),
+ Load->getMetadata(LLVMContext::MD_tbaa));
- if (AA.canInstructionRangeModify(BB->front(), *Load, Arg, LoadSize))
+ if (AA.canInstructionRangeModify(BB->front(), *Load, Loc))
return false; // Pointer is invalidated!
// Now check every path from the entry block to the load for transparency.
@@ -464,7 +461,7 @@
for (idf_ext_iterator<BasicBlock*, SmallPtrSet<BasicBlock*, 16> >
I = idf_ext_begin(P, TranspBlocks),
E = idf_ext_end(P, TranspBlocks); I != E; ++I)
- if (AA.canBasicBlockModify(**I, Arg, LoadSize))
+ if (AA.canBasicBlockModify(**I, Loc))
return false;
}
}
@@ -700,6 +697,9 @@
// of the previous load.
LoadInst *newLoad = new LoadInst(V, V->getName()+".val", Call);
newLoad->setAlignment(OrigLoad->getAlignment());
+ // Transfer the TBAA info too.
+ newLoad->setMetadata(LLVMContext::MD_tbaa,
+ OrigLoad->getMetadata(LLVMContext::MD_tbaa));
Args.push_back(newLoad);
AA.copyValue(OrigLoad, Args.back());
}