[opaque pointer types] [NFC] GEP: replace get(Pointer)ElementType uses with get{Source,Result}ElementType.

Summary:
GEPOperator: provide getResultElementType alongside getSourceElementType.
This is made possible by adding a result element type field to GetElementPtrConstantExpr, which GetElementPtrInst already has.

GEP: replace get(Pointer)ElementType uses with get{Source,Result}ElementType.

Reviewers: mjacob, dblaikie

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D16275

llvm-svn: 258145

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp
index 34074efd1ce..57603d9a7e2 100644
--- a/llvm/lib/Analysis/ScalarEvolution.cpp
+++ b/llvm/lib/Analysis/ScalarEvolution.cpp
@@ -4087,16 +4087,16 @@ const SCEV *ScalarEvolution::createNodeForSelectOrPHI(Instruction *I,
 /// operations. This allows them to be analyzed by regular SCEV code.
 ///
 const SCEV *ScalarEvolution::createNodeForGEP(GEPOperator *GEP) {
-  Value *Base = GEP->getOperand(0);
   // Don't attempt to analyze GEPs over unsized objects.
-  if (!Base->getType()->getPointerElementType()->isSized())
+  if (!GEP->getSourceElementType()->isSized())
     return getUnknown(GEP);
 
   SmallVector<const SCEV *, 4> IndexExprs;
   for (auto Index = GEP->idx_begin(); Index != GEP->idx_end(); ++Index)
     IndexExprs.push_back(getSCEV(*Index));
-  return getGEPExpr(GEP->getSourceElementType(), getSCEV(Base), IndexExprs,
-                    GEP->isInBounds());
+  return getGEPExpr(GEP->getSourceElementType(),
+                    getSCEV(GEP->getPointerOperand()),
+                    IndexExprs, GEP->isInBounds());
 }
 
 /// GetMinTrailingZeros - Determine the minimum number of zero bits that S is