Skip, for now, callsites where use of sret argument is not dominated by callsite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47980 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/StructRetPromotion.cpp b/lib/Transforms/IPO/StructRetPromotion.cpp
index 54a34e8..5275eda 100644
--- a/lib/Transforms/IPO/StructRetPromotion.cpp
+++ b/lib/Transforms/IPO/StructRetPromotion.cpp
@@ -171,6 +171,10 @@
// 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)) {
+ // TODO : Use dom info and insert PHINodes to collect get results
+ // from multiple call sites for this GEP.
+ if (GEP->getParent() != Call->getParent())
+ return false;
for (Value::use_iterator GEPI = GEP->use_begin(), GEPE = GEP->use_end();
GEPI != GEPE; ++GEPI)
if (!isa<LoadInst>(GEPI))