maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[X86] Add test to demonstrate inefficient lowering of v48i8 shuffle. 

llvm-svn: 304915
This commit is contained in:
Guy Blank 2017-06-07 14:29:10 +00:00
parent 66d98495b0
commit e1888d4388
1 changed files with 49 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
llvm/test/CodeGen/X86/vector-shuffle-v48.ll Normal file
View File

@ -0,0 +1,49 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-pc-linux -mattr=+avx2 < %s | FileCheck %s
define <16 x i8> @foo(<48 x i8>* %x0, <16 x i32> %x1, <16 x i32> %x2) {
; CHECK-LABEL: foo:
; CHECK: # BB#0:
; CHECK-NEXT: vmovdqu (%rdi), %ymm4
; CHECK-NEXT: vmovdqu 32(%rdi), %xmm5
; CHECK-NEXT: vpextrb $13, %xmm5, %eax
; CHECK-NEXT: vpextrb $10, %xmm5, %ecx
; CHECK-NEXT: vpextrb $7, %xmm5, %edx
; CHECK-NEXT: vpextrb $4, %xmm5, %esi
; CHECK-NEXT: vpextrb $1, %xmm5, %edi
; CHECK-NEXT: vextracti128 $1, %ymm4, %xmm5
; CHECK-NEXT: vpshufb {{.*#+}} xmm6 = xmm5[2,2,5,5,5,5,3,3,4,4,5,5,6,6,7,7]
; CHECK-NEXT: vpshufb {{.*#+}} xmm7 = xmm4[12,12,13,13,15,15,15,15,12,12,13,13,14,14,15,15]
; CHECK-NEXT: vpunpcklqdq {{.*#+}} xmm6 = xmm7[0],xmm6[0]
; CHECK-NEXT: vpshufb {{.*#+}} xmm4 = xmm4[0,0,1,1,3,3,3,3,6,6,9,9,9,9,7,7]
; CHECK-NEXT: vinserti128 $1, %xmm6, %ymm4, %ymm4
; CHECK-NEXT: vpand {{.*}}(%rip), %ymm4, %ymm4
; CHECK-NEXT: vpshufb {{.*#+}} xmm5 = xmm5[8,11,14],zero,zero,zero,zero,zero,zero,zero,zero,zero,zero,zero,zero,zero
; CHECK-NEXT: vpinsrb $3, %edi, %xmm5, %xmm5
; CHECK-NEXT: vpinsrb $4, %esi, %xmm5, %xmm5
; CHECK-NEXT: vpinsrb $5, %edx, %xmm5, %xmm5
; CHECK-NEXT: vpinsrb $6, %ecx, %xmm5, %xmm5
; CHECK-NEXT: vpinsrb $7, %eax, %xmm5, %xmm5
; CHECK-NEXT: vpmovzxbd {{.*#+}} ymm5 = xmm5[0],zero,zero,zero,xmm5[1],zero,zero,zero,xmm5[2],zero,zero,zero,xmm5[3],zero,zero,zero,xmm5[4],zero,zero,zero,xmm5[5],zero,zero,zero,xmm5[6],zero,zero,zero,xmm5[7],zero,zero,zero
; CHECK-NEXT: vpmulld %ymm0, %ymm4, %ymm0
; CHECK-NEXT: vpmulld %ymm1, %ymm5, %ymm1
; CHECK-NEXT: vpsrlvd %ymm2, %ymm0, %ymm0
; CHECK-NEXT: vpsrlvd %ymm3, %ymm1, %ymm1
; CHECK-NEXT: vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
; CHECK-NEXT: vpshufb %ymm2, %ymm0, %ymm0
; CHECK-NEXT: vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
; CHECK-NEXT: vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
; CHECK-NEXT: vpshufb %xmm3, %xmm0, %xmm0
; CHECK-NEXT: vpshufb %ymm2, %ymm1, %ymm1
; CHECK-NEXT: vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
; CHECK-NEXT: vpshufb %xmm3, %xmm1, %xmm1
; CHECK-NEXT: vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
; CHECK-NEXT: vzeroupper
; CHECK-NEXT: retq
%1 = load <48 x i8>, <48 x i8>* %x0, align 1
%2 = shufflevector <48 x i8> %1, <48 x i8> undef, <16 x i32> <i32 0, i32 3, i32 6, i32 9, i32 12, i32 15, i32 18, i32 21, i32 24, i32 27, i32 30, i32 33, i32 36, i32 39, i32 42, i32 45>
%3 = zext <16 x i8> %2 to <16 x i32>
%4 = mul <16 x i32> %3, %x1
%5 = lshr <16 x i32> %4, %x2
%6 = trunc <16 x i32> %5 to <16 x i8>
ret <16 x i8> %6
}