From: Duncan Sands <baldrick@free.fr>
Date: Tue, 28 Dec 2010 18:01:19 +0000 (+0000)
Subject: Clarify that InstructionSimplify only returns values that dominate the
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=19f14dcf6af11b5520acfc5c2fd4100ec1972b44;p=oota-llvm.git

Clarify that InstructionSimplify only returns values that dominate the
original instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122601 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Analysis/InstructionSimplify.h b/include/llvm/Analysis/InstructionSimplify.h
index c2812dfd25a..653971377d1 100644
--- a/include/llvm/Analysis/InstructionSimplify.h
+++ b/include/llvm/Analysis/InstructionSimplify.h
@@ -11,7 +11,8 @@
 // that do not require creating new instructions.  This does constant folding
 // ("add i32 1, 1" -> "2") but can also handle non-constant operands, either
 // returning a constant ("and i32 %x, 0" -> "0") or an already existing value
-// ("and i32 %x, %x" -> "%x").
+// ("and i32 %x, %x" -> "%x").  If the simplification is also an instruction
+// then it dominates the original instruction.
 //
 //===----------------------------------------------------------------------===//