From: Chris Lattner <sabre@nondot.org>
Date: Fri, 2 Sep 2005 18:41:28 +0000 (+0000)
Subject: Don't create zero sized stack objects even for array allocas with a zero
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=fd88f64934c43613dd4a70b97db620de1338782b;p=oota-llvm.git

Don't create zero sized stack objects even for array allocas with a zero
number of elements.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23219 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index bb27ad09d43..ecf9797b484 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -150,7 +150,8 @@ FunctionLoweringInfo::FunctionLoweringInfo(TargetLowering &tli,
         // TargetData.  It serves primarily to 8-byte align doubles for X86.
         if (Align < TySize && TySize <= 8) Align = TySize;
 
-        TySize *= CUI->getValue();   // Get total allocated size.
+        if (CUI->getValue())           // Don't produce zero sized stack objects
+          TySize *= CUI->getValue();   // Get total allocated size.
         StaticAllocaMap[AI] =
           MF.getFrameInfo()->CreateStackObject((unsigned)TySize, Align);
       }