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[ConstProp] add tests for intrinsics with poison ops; NFC
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@rotateright
rotateright committed Feb 15, 2022
1 parent 05337a7 commit 765b5b8
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Showing 2 changed files with 198 additions and 4 deletions.
8 changes: 4 additions & 4 deletions llvm/test/Transforms/InstSimplify/ConstProp/min-max.ll
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Expand Up @@ -293,7 +293,7 @@ define <5 x i8> @smax_vec() {
; CHECK-LABEL: @smax_vec(
; CHECK-NEXT: ret <5 x i8> <i8 undef, i8 127, i8 127, i8 42, i8 127>
;
%r = call <5 x i8> @llvm.smax.v5i8(<5 x i8> <i8 undef, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 undef, i8 42, i8 127>)
%r = call <5 x i8> @llvm.smax.v5i8(<5 x i8> <i8 poison, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 poison, i8 42, i8 127>)
ret <5 x i8> %r
}

Expand All @@ -309,7 +309,7 @@ define <5 x i8> @smin_vec() {
; CHECK-LABEL: @smin_vec(
; CHECK-NEXT: ret <5 x i8> <i8 undef, i8 -128, i8 -128, i8 42, i8 -127>
;
%r = call <5 x i8> @llvm.smin.v5i8(<5 x i8> <i8 undef, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 undef, i8 42, i8 129>)
%r = call <5 x i8> @llvm.smin.v5i8(<5 x i8> <i8 poison, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 poison, i8 42, i8 129>)
ret <5 x i8> %r
}

Expand All @@ -325,7 +325,7 @@ define <5 x i8> @umax_vec() {
; CHECK-LABEL: @umax_vec(
; CHECK-NEXT: ret <5 x i8> <i8 undef, i8 -1, i8 -1, i8 42, i8 -128>
;
%r = call <5 x i8> @llvm.umax.v5i8(<5 x i8> <i8 undef, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 undef, i8 42, i8 128>)
%r = call <5 x i8> @llvm.umax.v5i8(<5 x i8> <i8 poison, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 poison, i8 42, i8 128>)
ret <5 x i8> %r
}

Expand All @@ -341,6 +341,6 @@ define <5 x i8> @umin_vec() {
; CHECK-LABEL: @umin_vec(
; CHECK-NEXT: ret <5 x i8> <i8 undef, i8 0, i8 0, i8 42, i8 42>
;
%r = call <5 x i8> @llvm.umin.v5i8(<5 x i8> <i8 undef, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 undef, i8 42, i8 128>)
%r = call <5 x i8> @llvm.umin.v5i8(<5 x i8> <i8 poison, i8 undef, i8 1, i8 42, i8 42>, <5 x i8> <i8 undef, i8 1, i8 poison, i8 42, i8 128>)
ret <5 x i8> %r
}
194 changes: 194 additions & 0 deletions llvm/test/Transforms/InstSimplify/ConstProp/saturating-add-sub.ll
View file
Expand Up @@ -364,3 +364,197 @@ define <2 x i8> @test_ssub_vector_op1_undef_mix2() {
%x = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> <i8 undef, i8 10>, <2 x i8> <i8 20, i8 undef>)
ret <2 x i8> %x
}

; Tests for poison handling

define i8 @test_uadd_scalar_both_poison() {
; CHECK-LABEL: @test_uadd_scalar_both_poison(
; CHECK-NEXT: ret i8 undef
;
%x = call i8 @llvm.uadd.sat.i8(i8 poison, i8 poison)
ret i8 %x
}

define i8 @test_sadd_scalar_both_poison() {
; CHECK-LABEL: @test_sadd_scalar_both_poison(
; CHECK-NEXT: ret i8 undef
;
%x = call i8 @llvm.sadd.sat.i8(i8 poison, i8 poison)
ret i8 %x
}

define i8 @test_usub_scalar_both_poison() {
; CHECK-LABEL: @test_usub_scalar_both_poison(
; CHECK-NEXT: ret i8 undef
;
%x = call i8 @llvm.usub.sat.i8(i8 poison, i8 poison)
ret i8 %x
}

define i8 @test_ssub_scalar_both_poison() {
; CHECK-LABEL: @test_ssub_scalar_both_poison(
; CHECK-NEXT: ret i8 undef
;
%x = call i8 @llvm.ssub.sat.i8(i8 poison, i8 poison)
ret i8 %x
}

define i8 @test_uadd_scalar_op2_poison() {
; CHECK-LABEL: @test_uadd_scalar_op2_poison(
; CHECK-NEXT: ret i8 -1
;
%x = call i8 @llvm.uadd.sat.i8(i8 10, i8 poison)
ret i8 %x
}

define i8 @test_sadd_scalar_op1_poison() {
; CHECK-LABEL: @test_sadd_scalar_op1_poison(
; CHECK-NEXT: ret i8 -1
;
%x = call i8 @llvm.sadd.sat.i8(i8 poison, i8 10)
ret i8 %x
}

define i8 @test_usub_scalar_op2_poison() {
; CHECK-LABEL: @test_usub_scalar_op2_poison(
; CHECK-NEXT: ret i8 0
;
%x = call i8 @llvm.usub.sat.i8(i8 10, i8 poison)
ret i8 %x
}

define i8 @test_usub_scalar_op1_poison() {
; CHECK-LABEL: @test_usub_scalar_op1_poison(
; CHECK-NEXT: ret i8 0
;
%x = call i8 @llvm.usub.sat.i8(i8 poison, i8 10)
ret i8 %x
}

define <2 x i8> @test_uadd_vector_both_poison_splat() {
; CHECK-LABEL: @test_uadd_vector_both_poison_splat(
; CHECK-NEXT: ret <2 x i8> undef
;
%x = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> poison, <2 x i8> poison)
ret <2 x i8> %x
}

define <2 x i8> @test_sadd_vector_both_poison_splat() {
; CHECK-LABEL: @test_sadd_vector_both_poison_splat(
; CHECK-NEXT: ret <2 x i8> undef
;
%x = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> poison, <2 x i8> poison)
ret <2 x i8> %x
}

define <2 x i8> @test_usub_vector_both_poison_splat() {
; CHECK-LABEL: @test_usub_vector_both_poison_splat(
; CHECK-NEXT: ret <2 x i8> undef
;
%x = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> poison, <2 x i8> poison)
ret <2 x i8> %x
}

define <2 x i8> @test_ssub_vector_both_poison_splat() {
; CHECK-LABEL: @test_ssub_vector_both_poison_splat(
; CHECK-NEXT: ret <2 x i8> undef
;
%x = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> poison, <2 x i8> poison)
ret <2 x i8> %x
}

define <2 x i8> @test_uadd_vector_op2_poison_splat() {
; CHECK-LABEL: @test_uadd_vector_op2_poison_splat(
; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
;
%x = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> <i8 10, i8 20>, <2 x i8> poison)
ret <2 x i8> %x
}

define <2 x i8> @test_sadd_vector_op1_poison_splat() {
; CHECK-LABEL: @test_sadd_vector_op1_poison_splat(
; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
;
%x = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> poison, <2 x i8> <i8 10, i8 20>)
ret <2 x i8> %x
}

define <2 x i8> @test_usub_vector_op2_poison_splat() {
; CHECK-LABEL: @test_usub_vector_op2_poison_splat(
; CHECK-NEXT: ret <2 x i8> zeroinitializer
;
%x = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> <i8 10, i8 20>, <2 x i8> poison)
ret <2 x i8> %x
}

define <2 x i8> @test_ssub_vector_op1_poison_splat() {
; CHECK-LABEL: @test_ssub_vector_op1_poison_splat(
; CHECK-NEXT: ret <2 x i8> zeroinitializer
;
%x = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> poison, <2 x i8> <i8 10, i8 20>)
ret <2 x i8> %x
}

define <2 x i8> @test_uadd_vector_op2_poison_mix1() {
; CHECK-LABEL: @test_uadd_vector_op2_poison_mix1(
; CHECK-NEXT: ret <2 x i8> <i8 30, i8 undef>
;
%x = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> <i8 10, i8 poison>, <2 x i8> <i8 20, i8 poison>)
ret <2 x i8> %x
}

define <2 x i8> @test_uadd_vector_op2_poison_mix2() {
; CHECK-LABEL: @test_uadd_vector_op2_poison_mix2(
; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
;
%x = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> <i8 10, i8 poison>, <2 x i8> <i8 poison, i8 20>)
ret <2 x i8> %x
}

define <2 x i8> @test_sadd_vector_op1_poison_mix1() {
; CHECK-LABEL: @test_sadd_vector_op1_poison_mix1(
; CHECK-NEXT: ret <2 x i8> <i8 undef, i8 30>
;
%x = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> <i8 poison, i8 10>, <2 x i8> <i8 poison, i8 20>)
ret <2 x i8> %x
}

define <2 x i8> @test_sadd_vector_op1_poison_mix2() {
; CHECK-LABEL: @test_sadd_vector_op1_poison_mix2(
; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
;
%x = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> <i8 poison, i8 10>, <2 x i8> <i8 20, i8 poison>)
ret <2 x i8> %x
}

define <2 x i8> @test_usub_vector_op2_poison_mix1() {
; CHECK-LABEL: @test_usub_vector_op2_poison_mix1(
; CHECK-NEXT: ret <2 x i8> <i8 0, i8 undef>
;
%x = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> <i8 10, i8 poison>, <2 x i8> <i8 20, i8 poison>)
ret <2 x i8> %x
}

define <2 x i8> @test_usub_vector_op2_poison_mix2() {
; CHECK-LABEL: @test_usub_vector_op2_poison_mix2(
; CHECK-NEXT: ret <2 x i8> zeroinitializer
;
%x = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> <i8 10, i8 poison>, <2 x i8> <i8 poison, i8 20>)
ret <2 x i8> %x
}

define <2 x i8> @test_ssub_vector_op1_poison_mix1() {
; CHECK-LABEL: @test_ssub_vector_op1_poison_mix1(
; CHECK-NEXT: ret <2 x i8> <i8 undef, i8 -10>
;
%x = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> <i8 poison, i8 10>, <2 x i8> <i8 poison, i8 20>)
ret <2 x i8> %x
}

define <2 x i8> @test_ssub_vector_op1_poison_mix2() {
; CHECK-LABEL: @test_ssub_vector_op1_poison_mix2(
; CHECK-NEXT: ret <2 x i8> zeroinitializer
;
%x = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> <i8 poison, i8 10>, <2 x i8> <i8 20, i8 poison>)
ret <2 x i8> %x
}

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