; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s define i8 @flip_add_of_shift_neg(i8 %v, i8 %sh, i8 %x) { ; CHECK-LABEL: define i8 @flip_add_of_shift_neg ; CHECK-SAME: (i8 [[V:%.*]], i8 [[SH:%.*]], i8 [[X:%.*]]) { ; CHECK-NEXT: [[TMP1:%.*]] = shl i8 [[V]], [[SH]] ; CHECK-NEXT: [[R:%.*]] = sub i8 [[X]], [[TMP1]] ; CHECK-NEXT: ret i8 [[R]] ; %nv = sub i8 0, %v %sv = shl nuw nsw i8 %nv, %sh %r = add i8 %sv, %x ret i8 %r } define <2 x i8> @flip_add_of_shift_neg_vec(<2 x i8> %v, <2 x i8> %sh, <2 x i8> %xx) { ; CHECK-LABEL: define <2 x i8> @flip_add_of_shift_neg_vec ; CHECK-SAME: (<2 x i8> [[V:%.*]], <2 x i8> [[SH:%.*]], <2 x i8> [[XX:%.*]]) { ; CHECK-NEXT: [[X:%.*]] = mul <2 x i8> [[XX]], [[XX]] ; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i8> [[V]], [[SH]] ; CHECK-NEXT: [[R:%.*]] = sub <2 x i8> [[X]], [[TMP1]] ; CHECK-NEXT: ret <2 x i8> [[R]] ; %x = mul <2 x i8> %xx, %xx %nv = sub <2 x i8> zeroinitializer, %v %sv = shl <2 x i8> %nv, %sh %r = add <2 x i8> %x, %sv ret <2 x i8> %r } define i8 @flip_add_of_shift_neg_fail_shr(i8 %v, i8 %sh, i8 %x) { ; CHECK-LABEL: define i8 @flip_add_of_shift_neg_fail_shr ; CHECK-SAME: (i8 [[V:%.*]], i8 [[SH:%.*]], i8 [[X:%.*]]) { ; CHECK-NEXT: [[NV:%.*]] = sub i8 0, [[V]] ; CHECK-NEXT: [[SV:%.*]] = lshr i8 [[NV]], [[SH]] ; CHECK-NEXT: [[R:%.*]] = add i8 [[SV]], [[X]] ; CHECK-NEXT: ret i8 [[R]] ; %nv = sub i8 0, %v %sv = lshr i8 %nv, %sh %r = add i8 %sv, %x ret i8 %r } declare void @use.v2i8(<2 x i8>) define <2 x i8> @flip_add_of_shift_neg_vec_fail_multiuse_neg(<2 x i8> %v, <2 x i8> %sh, <2 x i8> %xx) { ; CHECK-LABEL: define <2 x i8> @flip_add_of_shift_neg_vec_fail_multiuse_neg ; CHECK-SAME: (<2 x i8> [[V:%.*]], <2 x i8> [[SH:%.*]], <2 x i8> [[XX:%.*]]) { ; CHECK-NEXT: [[X:%.*]] = mul <2 x i8> [[XX]], [[XX]] ; CHECK-NEXT: [[NV:%.*]] = sub <2 x i8> zeroinitializer, [[V]] ; CHECK-NEXT: [[SV:%.*]] = shl <2 x i8> [[NV]], [[SH]] ; CHECK-NEXT: call void @use.v2i8(<2 x i8> [[NV]]) ; CHECK-NEXT: [[R:%.*]] = add <2 x i8> [[X]], [[SV]] ; CHECK-NEXT: ret <2 x i8> [[R]] ; %x = mul <2 x i8> %xx, %xx %nv = sub <2 x i8> zeroinitializer, %v %sv = shl <2 x i8> %nv, %sh call void @use.v2i8(<2 x i8> %nv) %r = add <2 x i8> %x, %sv ret <2 x i8> %r } define <2 x i8> @flip_add_of_shift_neg_vec_fail_multiuse_shift(<2 x i8> %v, <2 x i8> %sh, <2 x i8> %xx) { ; CHECK-LABEL: define <2 x i8> @flip_add_of_shift_neg_vec_fail_multiuse_shift ; CHECK-SAME: (<2 x i8> [[V:%.*]], <2 x i8> [[SH:%.*]], <2 x i8> [[XX:%.*]]) { ; CHECK-NEXT: [[X:%.*]] = mul <2 x i8> [[XX]], [[XX]] ; CHECK-NEXT: [[NV:%.*]] = sub <2 x i8> zeroinitializer, [[V]] ; CHECK-NEXT: [[SV:%.*]] = shl <2 x i8> [[NV]], [[SH]] ; CHECK-NEXT: call void @use.v2i8(<2 x i8> [[SV]]) ; CHECK-NEXT: [[R:%.*]] = add <2 x i8> [[X]], [[SV]] ; CHECK-NEXT: ret <2 x i8> [[R]] ; %x = mul <2 x i8> %xx, %xx %nv = sub <2 x i8> zeroinitializer, %v %sv = shl <2 x i8> %nv, %sh call void @use.v2i8(<2 x i8> %sv) %r = add <2 x i8> %x, %sv ret <2 x i8> %r }