From 03ce206143c56e18f3c087bb259625b770b91985 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 13 May 2008 19:56:20 +0000
Subject: [PATCH] add a note

llvm-svn: 51062
---
 llvm/lib/Target/X86/README-SSE.txt | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/llvm/lib/Target/X86/README-SSE.txt b/llvm/lib/Target/X86/README-SSE.txt
index 5f114a855f09..61649726e381 100644
--- a/llvm/lib/Target/X86/README-SSE.txt
+++ b/llvm/lib/Target/X86/README-SSE.txt
@@ -787,5 +787,23 @@ _foo2:
 
 In sse4 mode, we could use insertps to make both better.
 
+Here's another testcase that could use insertps [mem]:
+
+#include <xmmintrin.h>
+extern float x2, x3;
+__m128 foo1 (float x1, float x4) {
+ return _mm_set_ps (x2, x1, x3, x4);
+}
+
+gcc mainline compiles it to:
+
+foo1:
+       insertps        $0x10, x2(%rip), %xmm0
+       insertps        $0x10, x3(%rip), %xmm1
+       movaps  %xmm1, %xmm2
+       movlhps %xmm0, %xmm2
+       movaps  %xmm2, %xmm0
+       ret
+
 //===---------------------------------------------------------------------===//