Skip to content

Commit 37c3fbf

Browse files
committed
[X86] Add test showing failure to merge concatenatable VPERMV3 nodes
1 parent 1b23719 commit 37c3fbf

File tree

1 file changed

+19
-0
lines changed

1 file changed

+19
-0
lines changed

llvm/test/CodeGen/X86/vector-shuffle-combining-avx512vbmi.ll

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -158,3 +158,22 @@ define <64 x i8> @combine_vpermi2var_v64i8_with_mask(<64 x i8> %a0, <64 x i8> %a
158158
%sel = select <64 x i1> %cmp, <64 x i8> zeroinitializer, <64 x i8> %perm
159159
ret <64 x i8> %sel
160160
}
161+
162+
define <32 x i8> @concat_vpermt2var_v16i8(<32 x i8> %x0, <32 x i8> %x1) {
163+
; CHECK-LABEL: concat_vpermt2var_v16i8:
164+
; CHECK: # %bb.0:
165+
; CHECK-NEXT: vmovdqa {{.*#+}} xmm2 = [0,17,2,18,4,19,6,21,8,23,10,25,12,27,14,29]
166+
; CHECK-NEXT: vpermi2b %xmm1, %xmm0, %xmm2
167+
; CHECK-NEXT: vmovdqa {{.*#+}} xmm3 = [16,49,18,50,20,51,22,53,24,55,26,57,28,59,30,61]
168+
; CHECK-NEXT: vpermi2b %ymm1, %ymm0, %ymm3
169+
; CHECK-NEXT: vinserti128 $1, %xmm3, %ymm2, %ymm0
170+
; CHECK-NEXT: ret{{[l|q]}}
171+
%l0 = shufflevector <32 x i8> %x0, <32 x i8> poison, <16 x i32> <i32 0, 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>
172+
%l1 = shufflevector <32 x i8> %x1, <32 x i8> poison, <16 x i32> <i32 0, 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>
173+
%h0 = shufflevector <32 x i8> %x0, <32 x i8> poison, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
174+
%h1 = shufflevector <32 x i8> %x1, <32 x i8> poison, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
175+
%v0 = call <16 x i8> @llvm.x86.avx512.maskz.vpermt2var.qi.128(<16 x i8> <i8 0, i8 17, i8 2, i8 18, i8 4, i8 19, i8 6, i8 21, i8 8, i8 23, i8 10, i8 25, i8 12, i8 27, i8 14, i8 29>, <16 x i8> %l0, <16 x i8> %l1, i16 -1)
176+
%v1 = call <16 x i8> @llvm.x86.avx512.maskz.vpermt2var.qi.128(<16 x i8> <i8 0, i8 17, i8 2, i8 18, i8 4, i8 19, i8 6, i8 21, i8 8, i8 23, i8 10, i8 25, i8 12, i8 27, i8 14, i8 29>, <16 x i8> %h0, <16 x i8> %h1, i16 -1)
177+
%res = shufflevector <16 x i8> %v0, <16 x i8> %v1, <32 x i32> <i32 0, 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 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
178+
ret <32 x i8> %res
179+
}

0 commit comments

Comments
 (0)