[opaque pointer type] Pass GlobalAlias the actual pointer type rather than decomposing it into pointee type + address space

Many of the callers already have the pointer type anyway, and for the
couple of callers that don't it's pretty easy to call PointerType::get
on the pointee type and address space.

This avoids LLParser from using PointerType::getElementType when parsing
GlobalAliases from IR.

llvm-svn: 236160

1 files changed, 1 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/GlobalMerge.cpp b/llvm/lib/CodeGen/GlobalMerge.cpp
index aaa37896293..79de17567f7 100644
--- a/llvm/lib/CodeGen/GlobalMerge.cpp
+++ b/llvm/lib/CodeGen/GlobalMerge.cpp
@@ -459,8 +459,7 @@ bool GlobalMerge::doMerge(SmallVectorImpl<GlobalVariable *> &Globals,
       if (Linkage != GlobalValue::InternalLinkage) {
         // Generate a new alias...
         auto *PTy = cast<PointerType>(GEP->getType());
-        GlobalAlias::create(PTy->getElementType(), PTy->getAddressSpace(),
-                            Linkage, Name, GEP, &M);
+        GlobalAlias::create(PTy, Linkage, Name, GEP, &M);
       }
 
       NumMerged++;