[llvm] r286934 - [AVX-512] Add an example test case for PR31018.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Mon Nov 14 23:21:55 2016
New Revision: 286934

URL: http://llvm.org/viewvc/llvm-project?rev=286934&view=rev
Log:
[AVX-512] Add an example test case for PR31018.

Modified:
    llvm/trunk/test/CodeGen/X86/vector-shuffle-512-v16.ll

Modified: llvm/trunk/test/CodeGen/X86/vector-shuffle-512-v16.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/vector-shuffle-512-v16.ll?rev=286934&r1=286933&r2=286934&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/vector-shuffle-512-v16.ll (original)
+++ llvm/trunk/test/CodeGen/X86/vector-shuffle-512-v16.ll Mon Nov 14 23:21:55 2016
@@ -356,3 +356,16 @@ define <16 x i32> @shuffle_v16i32_01_02_
   %shuffle = shufflevector <16 x i32> %a, <16 x i32> undef, <16 x i32><i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 0>
   ret <16 x i32> %shuffle
 }
+
+define <16 x i32> @mask_shuffle_v16i32_02_03_04_05_06_07_08_09_10_11_12_13_14_15_00_01(<16 x i32> %a, <16 x i32> %passthru, i16 %mask) {
+; ALL-LABEL: mask_shuffle_v16i32_02_03_04_05_06_07_08_09_10_11_12_13_14_15_00_01:
+; ALL:       # BB#0:
+; ALL-NEXT:    valignq {{.*#+}} zmm0 = zmm0[1,2,3,4,5,6,7,0]
+; ALL-NEXT:    kmovw %edi, %k1
+; ALL-NEXT:    vpblendmd %zmm0, %zmm1, %zmm0 {%k1}
+; ALL-NEXT:    retq
+  %shuffle = shufflevector <16 x i32> %a, <16 x i32> undef, <16 x i32><i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 0, i32 1>
+  %mask.cast = bitcast i16 %mask to <16 x i1>
+  %res = select <16 x i1> %mask.cast, <16 x i32> %shuffle, <16 x i32> %passthru
+  ret <16 x i32> %res
+}