; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s

declare void @use(i8)

define i8 @basic(i8 %x, i8 %y) {
; CHECK-LABEL: @basic(
; CHECK-NEXT:    [[NOTA:%.*]] = sub i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %notx = xor i8 %x, -1
  %a = add i8 %notx, %y
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define i8 @basic_com_add(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_com_add(
; CHECK-NEXT:    [[NOTA:%.*]] = sub i8 [[Y:%.*]], [[X:%.*]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %noty = xor i8 %y, -1
  %a = add i8 %x, %noty
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define i8 @basic_use_xor(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_use_xor(
; CHECK-NEXT:    [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
; CHECK-NEXT:    call void @use(i8 [[NOTX]])
; CHECK-NEXT:    [[NOTA:%.*]] = sub i8 [[X]], [[Y:%.*]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %notx = xor i8 %x, -1
  call void @use(i8 %notx)
  %a = add i8 %notx, %y
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define i8 @basic_use_add(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_use_add(
; CHECK-NEXT:    [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
; CHECK-NEXT:    [[A:%.*]] = add i8 [[NOTX]], [[Y:%.*]]
; CHECK-NEXT:    call void @use(i8 [[A]])
; CHECK-NEXT:    [[NOTA:%.*]] = sub i8 [[X]], [[Y]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %notx = xor i8 %x, -1
  %a = add i8 %notx, %y
  call void @use(i8 %a)
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define i8 @basic_use_both(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_use_both(
; CHECK-NEXT:    [[NOTX:%.*]] = xor i8 [[X:%.*]], -1
; CHECK-NEXT:    call void @use(i8 [[NOTX]])
; CHECK-NEXT:    [[A:%.*]] = add i8 [[NOTX]], [[Y:%.*]]
; CHECK-NEXT:    call void @use(i8 [[A]])
; CHECK-NEXT:    [[NOTA:%.*]] = sub i8 [[X]], [[Y]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %notx = xor i8 %x, -1
  call void @use(i8 %notx)
  %a = add i8 %notx, %y
  call void @use(i8 %a)
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define i8 @basic_preserve_nsw(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_preserve_nsw(
; CHECK-NEXT:    [[NOTA:%.*]] = sub nsw i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %notx = xor i8 %x, -1
  %a = add nsw i8 %notx, %y
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define i8 @basic_preserve_nuw(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_preserve_nuw(
; CHECK-NEXT:    [[NOTA:%.*]] = sub nuw i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %notx = xor i8 %x, -1
  %a = add nuw i8 %notx, %y
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define i8 @basic_preserve_nuw_nsw(i8 %x, i8 %y) {
; CHECK-LABEL: @basic_preserve_nuw_nsw(
; CHECK-NEXT:    [[NOTA:%.*]] = sub nuw nsw i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret i8 [[NOTA]]
;
  %notx = xor i8 %x, -1
  %a = add nuw nsw i8 %notx, %y
  %nota = xor i8 %a, -1
  ret i8 %nota
}

define <4 x i32> @vector_test(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @vector_test(
; CHECK-NEXT:    [[NOTA:%.*]] = sub <4 x i32> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret <4 x i32> [[NOTA]]
;
  %notx = xor <4 x i32> %x, <i32 -1, i32 -1, i32 -1, i32 -1>
  %a = add <4 x i32> %notx, %y
  %nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 -1, i32 -1>
  ret <4 x i32> %nota
}

define <4 x i32> @vector_test_undef(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @vector_test_undef(
; CHECK-NEXT:    [[NOTA:%.*]] = sub <4 x i32> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret <4 x i32> [[NOTA]]
;
  %notx = xor <4 x i32> %x, <i32 -1, i32 undef, i32 undef, i32 -1>
  %a = add <4 x i32> %notx, %y
  %nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 undef, i32 undef>
  ret <4 x i32> %nota
}


define <4 x i32> @vector_test_undef_nsw_nuw(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: @vector_test_undef_nsw_nuw(
; CHECK-NEXT:    [[NOTA:%.*]] = sub nuw nsw <4 x i32> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    ret <4 x i32> [[NOTA]]
;
  %notx = xor <4 x i32> %x, <i32 -1, i32 undef, i32 undef, i32 -1>
  %a = add nsw nuw <4 x i32> %notx, %y
  %nota = xor <4 x i32> %a, <i32 -1, i32 -1, i32 undef, i32 undef>
  ret <4 x i32> %nota
}