From: Shuxin Yang <shuxin.llvm@gmail.com>
Date: Wed, 9 Jan 2013 00:53:25 +0000 (+0000)
Subject: Add comment to the definition of Constant::isZeroValue().
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=c3d6de2fe52dbdbf41b1dfebb1430656a16b254b;p=oota-llvm.git

Add comment to the definition of Constant::isZeroValue().
(There already has a concise comment to the declaration.)

Thank Eric Christopher for his feedback!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171926 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/IR/Constants.cpp b/lib/IR/Constants.cpp
index 812692f3fae..93275549b18 100644
--- a/lib/IR/Constants.cpp
+++ b/lib/IR/Constants.cpp
@@ -51,6 +51,8 @@ bool Constant::isNegativeZeroValue() const {
   return isNullValue();
 }
 
+// Return true iff this constant is positive zero (floating point), negative
+// zero (floating point), or a null value.
 bool Constant::isZeroValue() const {
   // Floating point values have an explicit -0.0 value.
   if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this))