From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 10 Nov 2006 22:09:17 +0000 (+0000)
Subject: Add a note.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=484c7a12954fadcdfc07d4dbd41b9f0c081c425b;p=oota-llvm.git

Add a note.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31650 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/README-SSE.txt b/lib/Target/X86/README-SSE.txt
index 5c7722da535..2685956dc1a 100644
--- a/lib/Target/X86/README-SSE.txt
+++ b/lib/Target/X86/README-SSE.txt
@@ -551,3 +551,9 @@ void test4(vectorfloat *F, float *f) {
 
 Apply the same transformation that merged four float into a single 128-bit load
 to loads from constant pool.
+
+//===---------------------------------------------------------------------===//
+
+Floating point max / min are commutable when -enable-unsafe-fp-path is
+specified. We should turn int_x86_sse_max_ss and X86ISD::FMIN etc. into other
+nodes which are selected to max / min instructions that are marked commutable.