forked from OSchip/llvm-project
[InstCombine] add tests for div with select-of-constants divisor; NFC
Similar patterns as tests for: D115173 (and we might want to make a single patch for all of these).
This commit is contained in:
Sanjay Patel
parent
db32c4f456
commit
cfde8a6c9d
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@ -1,8 +1,8 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; This test makes sure that div instructions are properly eliminated.
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; RUN: opt < %s -instcombine -S | FileCheck %s
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declare void @use(i32)
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define i32 @test1(i32 %A) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret i32 [[A:%.*]]
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@ -1087,3 +1087,179 @@ define <vscale x 2 x i8> @sdiv_by_minSigned_nxv2i8(<vscale x 2 x i8> %x) {
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%sub = sub <vscale x 2 x i8> zeroinitializer, %div
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ret <vscale x 2 x i8> %sub
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}
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define i32 @sdiv_constant_dividend_select_of_constants_divisor(i1 %b) {
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; CHECK-LABEL: @sdiv_constant_dividend_select_of_constants_divisor(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 -3
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; CHECK-NEXT: [[R:%.*]] = sdiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 -3
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%r = sdiv i32 42, %s
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ret i32 %r
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}
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define i32 @sdiv_constant_dividend_select_of_constants_divisor_use(i1 %b) {
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; CHECK-LABEL: @sdiv_constant_dividend_select_of_constants_divisor_use(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 -3
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; CHECK-NEXT: call void @use(i32 [[S]])
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; CHECK-NEXT: [[R:%.*]] = sdiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 -3
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call void @use(i32 %s)
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%r = sdiv i32 42, %s
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ret i32 %r
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}
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define i32 @sdiv_constant_dividend_select_divisor1(i1 %b, i32 %x) {
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; CHECK-LABEL: @sdiv_constant_dividend_select_divisor1(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 [[X:%.*]], i32 -3
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; CHECK-NEXT: [[R:%.*]] = sdiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 %x, i32 -3
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%r = sdiv i32 42, %s
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ret i32 %r
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}
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define i32 @sdiv_constant_dividend_select_divisor2(i1 %b, i32 %x) {
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; CHECK-LABEL: @sdiv_constant_dividend_select_divisor2(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 [[X:%.*]]
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; CHECK-NEXT: [[R:%.*]] = sdiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 %x
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%r = sdiv i32 42, %s
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ret i32 %r
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}
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define <2 x i8> @sdiv_constant_dividend_select_of_constants_divisor_vec(i1 %b) {
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; CHECK-LABEL: @sdiv_constant_dividend_select_of_constants_divisor_vec(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 4>
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; CHECK-NEXT: [[R:%.*]] = sdiv <2 x i8> <i8 42, i8 -42>, [[S]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = select i1 %b, <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 4>
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%r = sdiv <2 x i8> <i8 42, i8 -42>, %s
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ret <2 x i8> %r
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}
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define <2 x i8> @sdiv_constant_dividend_select_of_constants_divisor_vec_ub1(i1 %b) {
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; CHECK-LABEL: @sdiv_constant_dividend_select_of_constants_divisor_vec_ub1(
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; CHECK-NEXT: ret <2 x i8> <i8 -10, i8 -10>
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;
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%s = select i1 %b, <2 x i8> <i8 0, i8 -5>, <2 x i8> <i8 -4, i8 4>
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%r = sdiv <2 x i8> <i8 42, i8 -42>, %s
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ret <2 x i8> %r
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}
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define <2 x i8> @sdiv_constant_dividend_select_of_constants_divisor_vec_ub2(i1 %b) {
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; CHECK-LABEL: @sdiv_constant_dividend_select_of_constants_divisor_vec_ub2(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 -1>
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; CHECK-NEXT: [[R:%.*]] = sdiv <2 x i8> <i8 42, i8 -128>, [[S]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = select i1 %b, <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 -1>
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%r = sdiv <2 x i8> <i8 42, i8 -128>, %s
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ret <2 x i8> %r
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}
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define i32 @sdiv_select_of_constants_divisor(i1 %b, i32 %x) {
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; CHECK-LABEL: @sdiv_select_of_constants_divisor(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 -3
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; CHECK-NEXT: [[R:%.*]] = sdiv i32 [[X:%.*]], [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 -3
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%r = sdiv i32 %x, %s
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ret i32 %r
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}
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define i32 @udiv_constant_dividend_select_of_constants_divisor(i1 %b) {
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; CHECK-LABEL: @udiv_constant_dividend_select_of_constants_divisor(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 -3
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; CHECK-NEXT: [[R:%.*]] = udiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 -3
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%r = udiv i32 42, %s
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ret i32 %r
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}
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define i32 @udiv_constant_dividend_select_of_constants_divisor_use(i1 %b) {
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; CHECK-LABEL: @udiv_constant_dividend_select_of_constants_divisor_use(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 -3
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; CHECK-NEXT: call void @use(i32 [[S]])
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; CHECK-NEXT: [[R:%.*]] = udiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 -3
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call void @use(i32 %s)
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%r = udiv i32 42, %s
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ret i32 %r
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}
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define i32 @udiv_constant_dividend_select_divisor1(i1 %b, i32 %x) {
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; CHECK-LABEL: @udiv_constant_dividend_select_divisor1(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 [[X:%.*]], i32 -3
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; CHECK-NEXT: [[R:%.*]] = udiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 %x, i32 -3
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%r = udiv i32 42, %s
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ret i32 %r
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}
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define i32 @udiv_constant_dividend_select_divisor2(i1 %b, i32 %x) {
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; CHECK-LABEL: @udiv_constant_dividend_select_divisor2(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 [[X:%.*]]
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; CHECK-NEXT: [[R:%.*]] = udiv i32 42, [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 %x
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%r = udiv i32 42, %s
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ret i32 %r
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}
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define <2 x i8> @udiv_constant_dividend_select_of_constants_divisor_vec(i1 %b) {
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; CHECK-LABEL: @udiv_constant_dividend_select_of_constants_divisor_vec(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 4>
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; CHECK-NEXT: [[R:%.*]] = udiv <2 x i8> <i8 42, i8 -42>, [[S]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = select i1 %b, <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 4>
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%r = udiv <2 x i8> <i8 42, i8 -42>, %s
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ret <2 x i8> %r
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}
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define <2 x i8> @udiv_constant_dividend_select_of_constants_divisor_vec_ub1(i1 %b) {
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; CHECK-LABEL: @udiv_constant_dividend_select_of_constants_divisor_vec_ub1(
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; CHECK-NEXT: ret <2 x i8> <i8 0, i8 53>
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;
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%s = select i1 %b, <2 x i8> <i8 0, i8 -5>, <2 x i8> <i8 -4, i8 4>
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%r = udiv <2 x i8> <i8 42, i8 -42>, %s
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ret <2 x i8> %r
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}
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define <2 x i8> @udiv_constant_dividend_select_of_constants_divisor_vec_ub2(i1 %b) {
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; CHECK-LABEL: @udiv_constant_dividend_select_of_constants_divisor_vec_ub2(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 -1>
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; CHECK-NEXT: [[R:%.*]] = udiv <2 x i8> <i8 42, i8 -128>, [[S]]
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; CHECK-NEXT: ret <2 x i8> [[R]]
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;
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%s = select i1 %b, <2 x i8> <i8 12, i8 -5>, <2 x i8> <i8 -4, i8 -1>
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%r = udiv <2 x i8> <i8 42, i8 -128>, %s
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ret <2 x i8> %r
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}
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define i32 @udiv_select_of_constants_divisor(i1 %b, i32 %x) {
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; CHECK-LABEL: @udiv_select_of_constants_divisor(
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; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 12, i32 -3
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; CHECK-NEXT: [[R:%.*]] = udiv i32 [[X:%.*]], [[S]]
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; CHECK-NEXT: ret i32 [[R]]
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;
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%s = select i1 %b, i32 12, i32 -3
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%r = udiv i32 %x, %s
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ret i32 %r
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}
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