70 lines
1.8 KiB
LLVM
70 lines
1.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instsimplify -S | FileCheck %s
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define i32 @negated_operand(i32 %x) {
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; CHECK-LABEL: @negated_operand(
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; CHECK-NEXT: ret i32 0
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;
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%negx = sub i32 0, %x
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%rem = srem i32 %negx, %x
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ret i32 %rem
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}
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define <2 x i32> @negated_operand_commute_vec(<2 x i32> %x) {
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; CHECK-LABEL: @negated_operand_commute_vec(
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; CHECK-NEXT: ret <2 x i32> zeroinitializer
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;
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%negx = sub <2 x i32> zeroinitializer, %x
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%rem = srem <2 x i32> %negx, %x
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ret <2 x i32> %rem
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}
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define i32 @knownnegation(i32 %x, i32 %y) {
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; CHECK-LABEL: @knownnegation(
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; CHECK-NEXT: ret i32 0
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;
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%xy = sub i32 %x, %y
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%yx = sub i32 %y, %x
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%rem = srem i32 %xy, %yx
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ret i32 %rem
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}
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define <2 x i32> @knownnegation_commute_vec(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @knownnegation_commute_vec(
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; CHECK-NEXT: ret <2 x i32> zeroinitializer
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;
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%xy = sub <2 x i32> %x, %y
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%yx = sub <2 x i32> %y, %x
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%rem = srem <2 x i32> %xy, %yx
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ret <2 x i32> %rem
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}
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define <3 x i32> @negated_operand_vec_undef(<3 x i32> %x) {
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; CHECK-LABEL: @negated_operand_vec_undef(
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; CHECK-NEXT: ret <3 x i32> zeroinitializer
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;
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%negx = sub <3 x i32> <i32 0, i32 undef, i32 0>, %x
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%rem = srem <3 x i32> %negx, %x
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ret <3 x i32> %rem
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}
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define <2 x i32> @negated_operand_vec_nonsplat(<2 x i32> %x) {
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; CHECK-LABEL: @negated_operand_vec_nonsplat(
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; CHECK-NEXT: [[NEGX:%.*]] = sub <2 x i32> <i32 0, i32 1>, [[X:%.*]]
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; CHECK-NEXT: [[REM:%.*]] = srem <2 x i32> [[NEGX]], [[X]]
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; CHECK-NEXT: ret <2 x i32> [[REM]]
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;
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%negx = sub <2 x i32> <i32 0, i32 1>, %x ; not 0, don't fold
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%rem = srem <2 x i32> %negx, %x
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ret <2 x i32> %rem
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}
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define i32 @negated_operand_commute(i32 %x) {
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; CHECK-LABEL: @negated_operand_commute(
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; CHECK-NEXT: ret i32 0
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;
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%negx = sub i32 0, %x
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%rem = srem i32 %x, %negx
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ret i32 %rem
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}
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