--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/CodeGen/X86/commuted-blend-mask.ll	Wed Feb 18 14:55:36 2015 +0900
@@ -0,0 +1,13 @@
+; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 < %s | FileCheck %s
+
+; When commuting the operands of a SSE blend, make sure that the resulting blend
+; mask can be encoded as a imm8.
+; Before, when commuting the operands to the shuffle in function @test, the backend
+; produced the following assembly:
+;   pblendw $4294967103, %xmm1, %xmm0
+
+define <4 x i32> @test(<4 x i32> %a, <4 x i32> %b) {
+  ;CHECK: pblendw $63, %xmm1, %xmm0
+  %shuffle = shufflevector <4 x i32> %a, <4 x i32> %b, <4 x i32> <i32 4, i32 5, i32 6, i32 3>
+  ret <4 x i32> %shuffle
+}