From: Chris Lattner <sabre@nondot.org>
Date: Thu, 4 Mar 2010 01:43:43 +0000 (+0000)
Subject: add a comment.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=97d853451ec22e123b4cc28523d2495370d8ac8a;p=oota-llvm.git

add a comment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97709 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 08030e0630f..3fad8ade41b 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -413,6 +413,7 @@ static bool isCalleeLoad(SDValue Callee, SDValue &Chain) {
 }
 
 void X86DAGToDAGISel::PreprocessISelDAG() {
+  // OptForSize is used in pattern predicates that isel is matching.
   OptForSize = MF->getFunction()->hasFnAttr(Attribute::OptimizeForSize);
   
   for (SelectionDAG::allnodes_iterator I = CurDAG->allnodes_begin(),