From 6fd1d32c635bfbf6f5fb53529857f1e43171adf1 Mon Sep 17 00:00:00 2001
From: Nadav Rotem <nadav.rotem@intel.com>
Date: Thu, 15 Mar 2012 08:49:06 +0000
Subject: When optimizing certain BUILD_VECTOR nodes into other BUILD_VECTOR
 nodes, add the new node into the work list because there is a potential for
 further optimizations.

llvm-svn: 152784
---
 llvm/test/CodeGen/X86/2012-03-15-build_vector_wl.ll | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 llvm/test/CodeGen/X86/2012-03-15-build_vector_wl.ll

(limited to 'llvm/test')

diff --git a/llvm/test/CodeGen/X86/2012-03-15-build_vector_wl.ll b/llvm/test/CodeGen/X86/2012-03-15-build_vector_wl.ll
new file mode 100644
index 00000000000..fec17e9f4ac
--- /dev/null
+++ b/llvm/test/CodeGen/X86/2012-03-15-build_vector_wl.ll
@@ -0,0 +1,10 @@
+
+; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx -mattr=+avx | FileCheck %s
+; CHECK: build_vector_again
+define <4 x i8> @build_vector_again(<16 x i8> %in) nounwind readnone {
+entry:
+  %out = shufflevector <16 x i8> %in, <16 x i8> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
+; CHECK: shufb
+  ret <4 x i8> %out
+; CHECK: ret
+}
-- 
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