From: Duncan Sands <baldrick@free.fr>
Date: Thu, 23 Feb 2012 08:23:06 +0000 (+0000)
Subject: GCC fails to understand that NextBB is always initialized if EvaluateBlock
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=4b794f81917d2799225a9d1951729f1798431f81

GCC fails to understand that NextBB is always initialized if EvaluateBlock
returns 'true' and emits a warning.  Help it out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151242 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 7c78a205448..acb723e1cc8 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -2645,7 +2645,7 @@ bool Evaluator::EvaluateFunction(Function *F, Constant *&RetVal,
   BasicBlock::iterator CurInst = CurBB->begin();
 
   while (1) {
-    BasicBlock *NextBB;
+    BasicBlock *NextBB = 0; // Initialized to avoid compiler warnings.
     if (!EvaluateBlock(CurInst, NextBB))
       return false;