Fix <rdar://problem/9751331>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134882 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMGlobalMerge.cpp b/lib/Target/ARM/ARMGlobalMerge.cpp
index 4bdd4f1..f899379 100644
--- a/lib/Target/ARM/ARMGlobalMerge.cpp
+++ b/lib/Target/ARM/ARMGlobalMerge.cpp
@@ -176,8 +176,8 @@
 
     // Ignore fancy-aligned globals for now.
     unsigned Alignment = I->getAlignment();
-    unsigned AllocSize = TD->getTypeAllocSize(I->getType()->getElementType());
-    if (Alignment > AllocSize)
+    const Type *Ty = I->getType()->getElementType();
+    if (Alignment > TD->getABITypeAlignment(Ty))
       continue;
 
     // Ignore all 'special' globals.
@@ -185,7 +185,7 @@
         I->getName().startswith(".llvm."))
       continue;
 
-    if (AllocSize < MaxOffset) {
+    if (TD->getTypeAllocSize(Ty) < MaxOffset) {
       const TargetLoweringObjectFile &TLOF = TLI->getObjFileLowering();
       if (TLOF.getKindForGlobal(I, TLI->getTargetMachine()).isBSSLocal())
         BSSGlobals.push_back(I);