From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 21 Mar 2006 07:12:57 +0000 (+0000)
Subject: Add a note about x86 register coallescing
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=50a6d8c835f8b16a6986b4dd4e4a047cb93a98b0;p=oota-llvm.git

Add a note about x86 register coallescing


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26920 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index 429d159fce4..d9aaecbb96d 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -644,3 +644,5 @@ void minf(float a, float b, float *X) {
 
 //===---------------------------------------------------------------------===//
 
+Teach the coallescer to coales vregs of different register classes. e.g. FR32 /
+FR64 to VR128.