[llvm] r258946 - [IndVars] Hoist DataLayout load out of loop; NFC

[Sanjoy Das via llvm-commits]

Author: sanjoy
Date: Wed Jan 27 11:05:09 2016
New Revision: 258946

URL: http://llvm.org/viewvc/llvm-project?rev=258946&view=rev
Log:
[IndVars] Hoist DataLayout load out of loop; NFC

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

Modified: llvm/trunk/lib/Transforms/Scalar/IndVarSimplify.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/IndVarSimplify.cpp?rev=258946&r1=258945&r2=258946&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/IndVarSimplify.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/IndVarSimplify.cpp Wed Jan 27 11:05:09 2016
@@ -1783,6 +1783,7 @@ static PHINode *FindLoopCounter(Loop *L,
   const SCEV *BestInit = nullptr;
   BasicBlock *LatchBlock = L->getLoopLatch();
   assert(LatchBlock && "needsLFTR should guarantee a loop latch");
+  const DataLayout &DL = L->getHeader()->getModule()->getDataLayout();
 
   for (BasicBlock::iterator I = L->getHeader()->begin(); isa<PHINode>(I); ++I) {
     PHINode *Phi = cast<PHINode>(I);
@@ -1801,8 +1802,7 @@ static PHINode *FindLoopCounter(Loop *L,
     // AR may be wider than BECount. With eq/ne tests overflow is immaterial.
     // AR may not be a narrower type, or we may never exit.
     uint64_t PhiWidth = SE->getTypeSizeInBits(AR->getType());
-    if (PhiWidth < BCWidth ||
-        !L->getHeader()->getModule()->getDataLayout().isLegalInteger(PhiWidth))
+    if (PhiWidth < BCWidth || !DL.isLegalInteger(PhiWidth))
       continue;
 
     const SCEV *Step = dyn_cast<SCEVConstant>(AR->getStepRecurrence(*SE));