From: Hal Finkel <hfinkel@anl.gov>
Date: Thu, 10 Jul 2014 06:06:11 +0000 (+0000)
Subject: Fix isDereferenceablePointer not to try to take the size of an unsized type.
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=66e23f126d0ffe97f973903de45088ed22552b9e;p=platform%2Fupstream%2Fllvm.git

Fix isDereferenceablePointer not to try to take the size of an unsized type.

I'll add a test-case shortly.

llvm-svn: 212687
---

diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp
index d61b8e5..35c241a 100644
--- a/llvm/lib/IR/Value.cpp
+++ b/llvm/lib/IR/Value.cpp
@@ -492,7 +492,8 @@ static bool isDereferenceablePointer(const Value *V, const DataLayout *DL,
     if (const BitCastInst* BC = dyn_cast<BitCastInst>(V)) {
       Type *STy = BC->getSrcTy()->getPointerElementType(),
            *DTy = BC->getDestTy()->getPointerElementType();
-      if ((DL->getTypeStoreSize(STy) >=
+      if (STy->isSized() && DTy->isSized() &&
+          (DL->getTypeStoreSize(STy) >=
            DL->getTypeStoreSize(DTy)) &&
           (DL->getABITypeAlignment(STy) >=
            DL->getABITypeAlignment(DTy)))