From 0b0102b172c38dca3b7384225257aa5e9e1ee777 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 21 Dec 2007 01:31:58 +0000
Subject: [PATCH] New entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45280 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/README-SSE.txt | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lib/Target/X86/README-SSE.txt b/lib/Target/X86/README-SSE.txt
index aa3405ca339..b4fc53ad0aa 100644
--- a/lib/Target/X86/README-SSE.txt
+++ b/lib/Target/X86/README-SSE.txt
@@ -741,3 +741,18 @@ save, as a really-signed value would be undefined for pslld.
 
 
 //===---------------------------------------------------------------------===//
+
+#include <math.h>
+int t1(double d) { return signbit(d); }
+
+This currently compiles to:
+	subl	$12, %esp
+	movsd	16(%esp), %xmm0
+	movsd	%xmm0, (%esp)
+	movl	4(%esp), %eax
+	shrl	$31, %eax
+	addl	$12, %esp
+	ret
+
+We should use movmskp{s|d} instead.
+