cache dereferenced iterators
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108134 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/StructRetPromotion.cpp b/lib/Transforms/IPO/StructRetPromotion.cpp
index 2c52998..a74686f 100644
--- a/lib/Transforms/IPO/StructRetPromotion.cpp
+++ b/lib/Transforms/IPO/StructRetPromotion.cpp
@@ -171,16 +171,16 @@
// Check FirstArg's users.
for (Value::use_iterator ArgI = FirstArg->use_begin(),
ArgE = FirstArg->use_end(); ArgI != ArgE; ++ArgI) {
-
+ User *U = *ArgI;
// If FirstArg user is a CallInst that does not correspond to current
// call site then this function F is not suitable for sret promotion.
- if (CallInst *CI = dyn_cast<CallInst>(ArgI)) {
+ if (CallInst *CI = dyn_cast<CallInst>(U)) {
if (CI != Call)
return false;
}
// If FirstArg user is a GEP whose all users are not LoadInst then
// this function F is not suitable for sret promotion.
- else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(ArgI)) {
+ else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(U)) {
// TODO : Use dom info and insert PHINodes to collect get results
// from multiple call sites for this GEP.
if (GEP->getParent() != Call->getParent())