[llvm] 0b1c9e8 - [X86] Add test case for PR44795

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2022-04-07T14:01:15+01:00
New Revision: 0b1c9e8e9a43f17d9636ee89ac5716da954d1581

URL: https://github.com/llvm/llvm-project/commit/0b1c9e8e9a43f17d9636ee89ac5716da954d1581
DIFF: https://github.com/llvm/llvm-project/commit/0b1c9e8e9a43f17d9636ee89ac5716da954d1581.diff

LOG: [X86] Add test case for PR44795

Added: 
    llvm/test/CodeGen/X86/vector-shuffle-fast-per-lane.ll

Modified: 
    

Removed: 
    


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diff  --git a/llvm/test/CodeGen/X86/vector-shuffle-fast-per-lane.ll b/llvm/test/CodeGen/X86/vector-shuffle-fast-per-lane.ll
new file mode 100644
index 0000000000000..00b0796c10767
--- /dev/null
+++ b/llvm/test/CodeGen/X86/vector-shuffle-fast-per-lane.ll
@@ -0,0 +1,26 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=SLOW
+; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=SLOW
+; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx2,+fast-variable-perlane-shuffle | FileCheck %s --check-prefixes=FAST
+; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx512f,+fast-variable-perlane-shuffle | FileCheck %s --check-prefixes=FAST
+;
+; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver1 | FileCheck %s --check-prefixes=SLOW
+; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver2 | FileCheck %s --check-prefixes=SLOW
+; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver3 | FileCheck %s --check-prefixes=FAST
+; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=haswell | FileCheck %s --check-prefixes=FAST
+; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=skx | FileCheck %s --check-prefixes=FAST
+
+define <32 x i8> @PR44795(<32 x i8> %a0) {
+; SLOW-LABEL: PR44795:
+; SLOW:       # %bb.0:
+; SLOW-NEXT:    vpshuflw {{.*#+}} ymm0 = ymm0[0,0,2,2,4,5,6,7,8,8,10,10,12,13,14,15]
+; SLOW-NEXT:    vpshufhw {{.*#+}} ymm0 = ymm0[0,1,2,3,4,4,6,6,8,9,10,11,12,12,14,14]
+; SLOW-NEXT:    retq
+;
+; FAST-LABEL: PR44795:
+; FAST:       # %bb.0:
+; FAST-NEXT:    vpshufb {{.*#+}} ymm0 = ymm0[0,1,0,1,4,5,4,5,8,9,8,9,12,13,12,13,16,17,16,17,20,21,20,21,24,25,24,25,28,29,28,29]
+; FAST-NEXT:    retq
+  %r = shufflevector <32 x i8> %a0, <32 x i8> poison, <32 x i32> <i32 0, i32 1, i32 0, i32 1, i32 4, i32 5, i32 4, i32 5, i32 8, i32 9, i32 8, i32 9, i32 12, i32 13, i32 12, i32 13, i32 16, i32 17, i32 16, i32 17, i32 20, i32 21, i32 20, i32 21, i32 24, i32 25, i32 24, i32 25, i32 28, i32 29, i32 28, i32 29>
+  ret <32 x i8> %r
+}