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Feeding isSafeToSpeculativelyExecute its DataLayout pointer (in Sink)

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This is the one remaining place I see where passing
isSafeToSpeculativelyExecute a DataLayout pointer might matter (at least for
loads) -- I think I got the others in r212720. Most of the other remaining
callers of isSafeToSpeculativelyExecute only use it for call sites (or
otherwise exclude loads).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212730 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2014-07-10 16:07:11 +00:00
parent 9478f0a6ff
commit b1beb01d82
1 changed files with 5 additions and 1 deletions
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6
lib/Transforms/Scalar/Sink.cpp
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@ -18,6 +18,7 @@
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/Support/Debug.h"
@ -34,6 +35,7 @@ namespace {
DominatorTree *DT;
LoopInfo *LI;
AliasAnalysis *AA;
const DataLayout *DL;
public:
static char ID; // Pass identification
@ -98,6 +100,8 @@ bool Sinking::runOnFunction(Function &F) {
DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
LI = &getAnalysis<LoopInfo>();
AA = &getAnalysis<AliasAnalysis>();
DataLayoutPass *DLP = getAnalysisIfAvailable<DataLayoutPass>();
DL = DLP ? &DLP->getDataLayout() : nullptr;
bool MadeChange, EverMadeChange = false;
@ -193,7 +197,7 @@ bool Sinking::IsAcceptableTarget(Instruction *Inst,
if (SuccToSinkTo->getUniquePredecessor() != Inst->getParent()) {
// We cannot sink a load across a critical edge - there may be stores in
// other code paths.
if (!isSafeToSpeculativelyExecute(Inst))
if (!isSafeToSpeculativelyExecute(Inst, DL))
return false;
// We don't want to sink across a critical edge if we don't dominate the