[llvm] r212730 - Feeding isSafeToSpeculativelyExecute its DataLayout pointer (in Sink)

[Hal Finkel]

Author: hfinkel
Date: Thu Jul 10 11:07:11 2014
New Revision: 212730

URL: http://llvm.org/viewvc/llvm-project?rev=212730&view=rev
Log:
Feeding isSafeToSpeculativelyExecute its DataLayout pointer (in Sink)

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).

Modified:
    llvm/trunk/lib/Transforms/Scalar/Sink.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/Sink.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/Sink.cpp?rev=212730&r1=212729&r2=212730&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/Sink.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/Sink.cpp Thu Jul 10 11:07:11 2014
@@ -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(Instruc
   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