Correctly estimate SROA savings for store operands in inline cost analysis.

When estimating SROA savings, we want to see if an address is derived
off an alloca in the caller. For store instructions, operand 1 is the
address operand, but the current code uses operand 0.  Use
getPointerOperand for loads and stores to fix this.

Patch by Easwaran Raman.
http://reviews.llvm.org/D8425

llvm-svn: 232827

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Analysis/IPA/InlineCost.cpp b/llvm/lib/Analysis/IPA/InlineCost.cpp
index 5a9abec6a2e..eeb3b87382e 100644
--- a/llvm/lib/Analysis/IPA/InlineCost.cpp
+++ b/llvm/lib/Analysis/IPA/InlineCost.cpp
@@ -621,7 +621,7 @@ bool CallAnalyzer::visitBinaryOperator(BinaryOperator &I) {
 bool CallAnalyzer::visitLoad(LoadInst &I) {
   Value *SROAArg;
   DenseMap<Value *, int>::iterator CostIt;
-  if (lookupSROAArgAndCost(I.getOperand(0), SROAArg, CostIt)) {
+  if (lookupSROAArgAndCost(I.getPointerOperand(), SROAArg, CostIt)) {
     if (I.isSimple()) {
       accumulateSROACost(CostIt, InlineConstants::InstrCost);
       return true;
@@ -636,7 +636,7 @@ bool CallAnalyzer::visitLoad(LoadInst &I) {
 bool CallAnalyzer::visitStore(StoreInst &I) {
   Value *SROAArg;
   DenseMap<Value *, int>::iterator CostIt;
-  if (lookupSROAArgAndCost(I.getOperand(0), SROAArg, CostIt)) {
+  if (lookupSROAArgAndCost(I.getPointerOperand(), SROAArg, CostIt)) {
     if (I.isSimple()) {
       accumulateSROACost(CostIt, InlineConstants::InstrCost);
       return true;