From: Chris Lattner <sabre@nondot.org>
Date: Fri, 2 Jul 2004 22:55:47 +0000 (+0000)
Subject: Do not call getTypeSize on a type that has no size
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=cf27afb64e3387a747a467072536df8259488213;p=oota-llvm.git

Do not call getTypeSize on a type that has no size


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14584 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 28e2eec0b41..bf571194864 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -2854,7 +2854,8 @@ Instruction *InstCombiner::visitAllocationInst(AllocationInst &AI) {
   // If alloca'ing a zero byte object, replace the alloca with a null pointer.
   // Note that we only do this for alloca's, because malloc should allocate and
   // return a unique pointer, even for a zero byte allocation.
-  if (isa<AllocaInst>(AI) && TD->getTypeSize(AI.getAllocatedType()) == 0)
+  if (isa<AllocaInst>(AI) && AI.getAllocatedType()->isSized() && 
+      TD->getTypeSize(AI.getAllocatedType()) == 0)
     return ReplaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));
 
   return 0;