From 2c9da989c20aacc523b8751ca45a11f4f24f8d54 Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Mon, 4 Feb 2013 15:19:33 +0000
Subject: X86: Open up some opportunities for constant folding by postponing
 shift lowering.

Fixes PR15141.

llvm-svn: 174327
---
 llvm/test/CodeGen/X86/avx-shift.ll | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'llvm/test/CodeGen/X86/avx-shift.ll')

diff --git a/llvm/test/CodeGen/X86/avx-shift.ll b/llvm/test/CodeGen/X86/avx-shift.ll
index 681747b844a..b0bff454c18 100644
--- a/llvm/test/CodeGen/X86/avx-shift.ll
+++ b/llvm/test/CodeGen/X86/avx-shift.ll
@@ -112,6 +112,16 @@ define <8 x i32> @vshift08(<8 x i32> %a) nounwind {
   ret <8 x i32> %bitop
 }
 
+; PR15141
+; CHECK: _vshift13:
+; CHECK-NOT: vpsll
+; CHECK: vcvttps2dq
+; CHECK-NEXT: vpmulld
+define <4 x i32> @vshift13(<4 x i32> %in) {
+  %T = shl <4 x i32> %in, <i32 0, i32 1, i32 2, i32 4>
+  ret <4 x i32> %T
+}
+
 ;;; Uses shifts for sign extension
 ; CHECK: _sext_v16i16
 ; CHECK: vpsllw
-- 
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