[llvm] r267282 - [X86][XOP] Added VPPERM -> BLEND-WITH-ZERO Test

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Sat Apr 23 06:14:18 2016
New Revision: 267282

URL: http://llvm.org/viewvc/llvm-project?rev=267282&view=rev
Log:
[X86][XOP] Added VPPERM -> BLEND-WITH-ZERO Test

Currently failing due to poor blend matching, found whilst investigating PR27472

Modified:
    llvm/trunk/test/CodeGen/X86/vector-shuffle-combining-xop.ll

Modified: llvm/trunk/test/CodeGen/X86/vector-shuffle-combining-xop.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/vector-shuffle-combining-xop.ll?rev=267282&r1=267281&r2=267282&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/vector-shuffle-combining-xop.ll (original)
+++ llvm/trunk/test/CodeGen/X86/vector-shuffle-combining-xop.ll Sat Apr 23 06:14:18 2016
@@ -34,6 +34,15 @@ define <16 x i8> @combine_vpperm_identit
   ret <16 x i8> %res4
 }
 
+define <16 x i8> @combine_vpperm_as_blend_with_zero(<16 x i8> %a0, <16 x i8> %a1) {
+; CHECK-LABEL: combine_vpperm_as_blend_with_zero:
+; CHECK:       # BB#0:
+; CHECK-NEXT:    vpperm {{.*#+}} xmm0 = xmm0[0,1],zero,zero,xmm0[4,5,6,7],zero,zero,zero,zero,zero,zero,zero,zero
+; CHECK-NEXT:    retq
+  %res0 = call <16 x i8> @llvm.x86.xop.vpperm(<16 x i8> %a0, <16 x i8> %a1, <16 x i8> <i8 0, i8 1, i8 128, i8 129, i8 4, i8 5, i8 6, i8 7, i8 130, i8 131, i8 132, i8 133, i8 134, i8 135, i8 136, i8 137>)
+  ret <16 x i8> %res0
+}
+
 define <16 x i8> @combine_vpperm_as_unary_unpckhwd(<16 x i8> %a0, <16 x i8> %a1) {
 ; CHECK-LABEL: combine_vpperm_as_unary_unpckhwd:
 ; CHECK:       # BB#0: