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[test][AArch64] Adjust vector insertion lit tests #143101

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Jun 11, 2025
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[test][AArch64] Adjust vector insertion lit tests #143101

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69 changes: 67 additions & 2 deletions llvm/test/CodeGen/AArch64/arm64-vector-insertion.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,35 @@ define <16 x i8> @test_insert_v16i8_insert_2_undef_base(i8 %a) {
%v.6 = insertelement <16 x i8> %v.4, i8 %a, i32 6
%v.7 = insertelement <16 x i8> %v.6, i8 %a, i32 7
%v.8 = insertelement <16 x i8> %v.7, i8 %a, i32 8
%v.10 = insertelement <16 x i8> %v.8, i8 %a, i32 10
%v.11 = insertelement <16 x i8> %v.10, i8 %a, i32 11
%v.12 = insertelement <16 x i8> %v.11, i8 %a, i32 12
%v.13 = insertelement <16 x i8> %v.12, i8 %a, i32 13
%v.14 = insertelement <16 x i8> %v.13, i8 %a, i32 14
%v.15 = insertelement <16 x i8> %v.14, i8 %a, i32 15
ret <16 x i8> %v.15
}

; Similar to above, but we leave element 8 as undef. One interesting part with
; this test case is that %a may be poison, so simply inserting %a also at
; index 8 would make the result vector more poisonous.
define <16 x i8> @test_insert_v16i8_insert_2_undef_base_skip8(i32 %a0) {
; CHECK-LABEL: test_insert_v16i8_insert_2_undef_base_skip8:
; CHECK: // %bb.0:
; CHECK-NEXT: lsr w8, w0, #5
; CHECK-NEXT: dup.16b v0, w8
; CHECK-NEXT: mov.b v0[5], wzr
; CHECK-NEXT: mov.b v0[9], wzr
; CHECK-NEXT: ret
%a1 = lshr exact i32 %a0, 5
%a = trunc i32 %a1 to i8
%v.0 = insertelement <16 x i8> <i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 0, i8 undef, i8 undef, i8 undef, i8 0, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef> , i8 %a, i32 0
%v.1 = insertelement <16 x i8> %v.0, i8 %a, i32 1
%v.2 = insertelement <16 x i8> %v.1, i8 %a, i32 2
%v.3 = insertelement <16 x i8> %v.2, i8 %a, i32 3
%v.4 = insertelement <16 x i8> %v.3, i8 %a, i32 4
%v.6 = insertelement <16 x i8> %v.4, i8 %a, i32 6
%v.7 = insertelement <16 x i8> %v.6, i8 %a, i32 7
%v.10 = insertelement <16 x i8> %v.7, i8 %a, i32 10
%v.11 = insertelement <16 x i8> %v.10, i8 %a, i32 11
%v.12 = insertelement <16 x i8> %v.11, i8 %a, i32 12
Expand All @@ -75,8 +104,8 @@ define <16 x i8> @test_insert_v16i8_insert_2_undef_base(i8 %a) {
ret <16 x i8> %v.15
}

define <16 x i8> @test_insert_v16i8_insert_2_undef_base_different_valeus(i8 %a, i8 %b) {
; CHECK-LABEL: test_insert_v16i8_insert_2_undef_base_different_valeus:
define <16 x i8> @test_insert_v16i8_insert_2_undef_base_different_values(i8 %a, i8 %b) {
; CHECK-LABEL: test_insert_v16i8_insert_2_undef_base_different_values:
; CHECK: // %bb.0:
; CHECK-NEXT: dup.16b v0, w0
; CHECK-NEXT: mov.b v0[2], w1
Expand All @@ -94,6 +123,42 @@ define <16 x i8> @test_insert_v16i8_insert_2_undef_base_different_valeus(i8 %a,
%v.6 = insertelement <16 x i8> %v.4, i8 %a, i32 6
%v.7 = insertelement <16 x i8> %v.6, i8 %b, i32 7
%v.8 = insertelement <16 x i8> %v.7, i8 %a, i32 8
%v.10 = insertelement <16 x i8> %v.8, i8 %a, i32 10
%v.11 = insertelement <16 x i8> %v.10, i8 %a, i32 11
%v.12 = insertelement <16 x i8> %v.11, i8 %b, i32 12
%v.13 = insertelement <16 x i8> %v.12, i8 %a, i32 13
%v.14 = insertelement <16 x i8> %v.13, i8 %a, i32 14
%v.15 = insertelement <16 x i8> %v.14, i8 %b, i32 15
ret <16 x i8> %v.15
}

; Similar to above, but we leave element 8 as undef. One interesting part with
; this test case is that %a and %b may be poison, so simply inserting %a or %b
; at index 8 would make the result vector more poisonous.
define <16 x i8> @test_insert_v16i8_insert_2_undef_base_different_values_skip8(i32 %a0, i32 %b0) {
; CHECK-LABEL: test_insert_v16i8_insert_2_undef_base_different_values_skip8:
; CHECK: // %bb.0:
; CHECK-NEXT: lsr w8, w0, #5
; CHECK-NEXT: dup.16b v0, w8
; CHECK-NEXT: lsr w8, w1, #5
; CHECK-NEXT: mov.b v0[2], w8
; CHECK-NEXT: mov.b v0[5], wzr
; CHECK-NEXT: mov.b v0[7], w8
; CHECK-NEXT: mov.b v0[9], wzr
; CHECK-NEXT: mov.b v0[12], w8
; CHECK-NEXT: mov.b v0[15], w8
; CHECK-NEXT: ret
%a1 = lshr exact i32 %a0, 5
%a = trunc i32 %a1 to i8
%b1 = lshr exact i32 %b0, 5
%b = trunc i32 %b1 to i8
%v.0 = insertelement <16 x i8> <i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 0, i8 undef, i8 undef, i8 undef, i8 0, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef> , i8 %a, i32 0
%v.1 = insertelement <16 x i8> %v.0, i8 %a, i32 1
%v.2 = insertelement <16 x i8> %v.1, i8 %b, i32 2
%v.3 = insertelement <16 x i8> %v.2, i8 %a, i32 3
%v.4 = insertelement <16 x i8> %v.3, i8 %a, i32 4
%v.6 = insertelement <16 x i8> %v.4, i8 %a, i32 6
%v.7 = insertelement <16 x i8> %v.6, i8 %b, i32 7
%v.10 = insertelement <16 x i8> %v.7, i8 %a, i32 10
%v.11 = insertelement <16 x i8> %v.10, i8 %a, i32 11
%v.12 = insertelement <16 x i8> %v.11, i8 %b, i32 12
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