From: Bob Wilson <bob.wilson@apple.com>
Date: Thu, 13 Jan 2011 18:26:59 +0000 (+0000)
Subject: Check for empty structs, and for consistency, zero-element arrays.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=f0908aeade2f41d2fed82de8d85448358b379328;p=oota-llvm.git

Check for empty structs, and for consistency, zero-element arrays.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123383 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
index 0ec095749f9..e248413f438 100644
--- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp
+++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
@@ -1084,12 +1084,12 @@ static bool isHomogeneousAggregate(const Type *T, unsigned &NumElts,
                                    const Type *&EltTy) {
   if (const ArrayType *AT = dyn_cast<ArrayType>(T)) {
     NumElts = AT->getNumElements();
-    EltTy = AT->getElementType();
+    EltTy = (NumElts == 0 ? 0 : AT->getElementType());
     return true;
   }
   if (const StructType *ST = dyn_cast<StructType>(T)) {
     NumElts = ST->getNumContainedTypes();
-    EltTy = ST->getContainedType(0);
+    EltTy = (NumElts == 0 ? 0 : ST->getContainedType(0));
     for (unsigned n = 1; n < NumElts; ++n) {
       if (ST->getContainedType(n) != EltTy)
         return false;