From: Bill Wendling <isanbard@gmail.com>
Date: Wed, 4 May 2011 23:40:14 +0000 (+0000)
Subject: Document the automatic alias printing of InstAliases.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3f58a513e19fba487cb8416492456e9ade7db32e;p=oota-llvm.git

Document the automatic alias printing of InstAliases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130889 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/docs/CodeGenerator.html b/docs/CodeGenerator.html
index 91855633239..60f42607f07 100644
--- a/docs/CodeGenerator.html
+++ b/docs/CodeGenerator.html
@@ -2019,6 +2019,11 @@ def : InstAlias&lt;"fcomi $reg", (COM_FIr RST:$reg)&gt;;
 <p>Instruction aliases can also have a Requires clause to make them
 subtarget specific.</p>
 
+<p>If the back-end supports it, the instruction printer can automatically emit
+   the alias rather than what's being aliased. It typically leads to better,
+   more readable code. If it's better to print out what's being aliased, then
+   pass a '0' as the third parameter to the InstAlias definition.</p>
+
 </div>
 
 </div>