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

llvm-svn: 286934
llvm · Nov 15, 2016 · 0637099 · 0637099
1 parent e6915b8
commit 0637099
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/llvm/test/CodeGen/X86/vector-shuffle-512-v16.ll b/llvm/test/CodeGen/X86/vector-shuffle-512-v16.ll
@@ -356,3 +356,16 @@ define <16 x i32> @shuffle_v16i32_01_02_03_04_05_06_07_08_09_10_11_12_13_14_15_0
   %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
+}