From: Dan Gohman <gohman@apple.com>
Date: Thu, 1 Jul 2010 01:33:21 +0000 (+0000)
Subject: Don't use operator[] here, because it's not desirable to insert a default
X-Git-Tag: android-x86-6.0-r1~1003^2~5166
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=c25ad637662ec24880a7eadad69b1be311ea61ae;p=android-x86%2Fexternal-llvm.git

Don't use operator[] here, because it's not desirable to insert a default
value if the search fails.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107368 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 40995849238..8cf279a8acf 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -6127,8 +6127,11 @@ SelectionDAGBuilder::HandlePHINodesInSuccessorBlocks(const BasicBlock *LLVMBB) {
         }
         Reg = RegOut;
       } else {
-        Reg = FuncInfo.ValueMap[PHIOp];
-        if (Reg == 0) {
+        DenseMap<const Value *, unsigned>::iterator I =
+          FuncInfo.ValueMap.find(PHIOp);
+        if (I != FuncInfo.ValueMap.end())
+          Reg = I->second;
+        else {
           assert(isa<AllocaInst>(PHIOp) &&
                  FuncInfo.StaticAllocaMap.count(cast<AllocaInst>(PHIOp)) &&
                  "Didn't codegen value into a register!??");