test/Transforms/InstCombine/sub.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
target datalayout = "e-p:64:64:64-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"

; Optimize subtracts.
;
; RUN: opt < %s -instcombine -S | FileCheck %s

define i32 @test1(i32 %A) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    ret i32 0
;
  %B = sub i32 %A, %A
  ret i32 %B
}

define i32 @test2(i32 %A) {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    ret i32 %A
;
  %B = sub i32 %A, 0
  ret i32 %B
}

define i32 @test3(i32 %A) {
; CHECK-LABEL: @test3(
; CHECK-NEXT:    ret i32 %A
;
  %B = sub i32 0, %A
  %C = sub i32 0, %B
  ret i32 %C
}

define i32 @test4(i32 %A, i32 %x) {
; CHECK-LABEL: @test4(
; CHECK-NEXT:    [[C:%.*]] = add i32 %x, %A
; CHECK-NEXT:    ret i32 [[C]]
;
  %B = sub i32 0, %A
  %C = sub i32 %x, %B
  ret i32 %C
}

define i32 @test5(i32 %A, i32 %B, i32 %C) {
; CHECK-LABEL: @test5(
; CHECK-NEXT:    [[D1:%.*]] = sub i32 %C, %B
; CHECK-NEXT:    [[E:%.*]] = add i32 [[D1]], %A
; CHECK-NEXT:    ret i32 [[E]]
;
  %D = sub i32 %B, %C
  %E = sub i32 %A, %D
  ret i32 %E
}

define i32 @test6(i32 %A, i32 %B) {
; CHECK-LABEL: @test6(
; CHECK-NEXT:    [[B_NOT:%.*]] = xor i32 %B, -1
; CHECK-NEXT:    [[D:%.*]] = and i32 %A, [[B_NOT]]
; CHECK-NEXT:    ret i32 [[D]]
;
  %C = and i32 %A, %B
  %D = sub i32 %A, %C
  ret i32 %D
}

define i32 @test7(i32 %A) {
; CHECK-LABEL: @test7(
; CHECK-NEXT:    [[B:%.*]] = xor i32 %A, -1
; CHECK-NEXT:    ret i32 [[B]]
;
  %B = sub i32 -1, %A
  ret i32 %B
}

define i32 @test8(i32 %A) {
; CHECK-LABEL: @test8(
; CHECK-NEXT:    [[C:%.*]] = shl i32 %A, 3
; CHECK-NEXT:    ret i32 [[C]]
;
  %B = mul i32 9, %A
  %C = sub i32 %B, %A
  ret i32 %C
}

define i32 @test9(i32 %A) {
; CHECK-LABEL: @test9(
; CHECK-NEXT:    [[C:%.*]] = mul i32 %A, -2
; CHECK-NEXT:    ret i32 [[C]]
;
  %B = mul i32 3, %A
  %C = sub i32 %A, %B
  ret i32 %C
}

define i32 @test10(i32 %A, i32 %B) {
; CHECK-LABEL: @test10(
; CHECK-NEXT:    [[E:%.*]] = mul i32 %A, %B
; CHECK-NEXT:    ret i32 [[E]]
;
  %C = sub i32 0, %A
  %D = sub i32 0, %B
  %E = mul i32 %C, %D
  ret i32 %E
}

define i32 @test10a(i32 %A) {
; CHECK-LABEL: @test10a(
; CHECK-NEXT:    [[E:%.*]] = mul i32 %A, -7
; CHECK-NEXT:    ret i32 [[E]]
;
  %C = sub i32 0, %A
  %E = mul i32 %C, 7
  ret i32 %E
}

define i1 @test11(i8 %A, i8 %B) {
; CHECK-LABEL: @test11(
; CHECK-NEXT:    [[D:%.*]] = icmp ne i8 %A, %B
; CHECK-NEXT:    ret i1 [[D]]
;
  %C = sub i8 %A, %B
  %D = icmp ne i8 %C, 0
  ret i1 %D
}

define <2 x i1> @test11vec(<2 x i8> %A, <2 x i8> %B) {
; CHECK-LABEL: @test11vec(
; CHECK-NEXT:    [[D:%.*]] = icmp ne <2 x i8> %A, %B
; CHECK-NEXT:    ret <2 x i1> [[D]]
;
  %C = sub <2 x i8> %A, %B
  %D = icmp ne <2 x i8> %C, zeroinitializer
  ret <2 x i1> %D
}

define i32 @test12(i32 %A) {
; CHECK-LABEL: @test12(
; CHECK-NEXT:    [[C:%.*]] = lshr i32 %A, 31
; CHECK-NEXT:    ret i32 [[C]]
;
  %B = ashr i32 %A, 31
  %C = sub i32 0, %B
  ret i32 %C
}

define i32 @test13(i32 %A) {
; CHECK-LABEL: @test13(
; CHECK-NEXT:    [[C:%.*]] = ashr i32 %A, 31
; CHECK-NEXT:    ret i32 [[C]]
;
  %B = lshr i32 %A, 31
  %C = sub i32 0, %B
  ret i32 %C
}

define <2 x i32> @test12vec(<2 x i32> %A) {
; CHECK-LABEL: @test12vec(
; CHECK-NEXT:    [[C:%.*]] = lshr <2 x i32> %A, <i32 31, i32 31>
; CHECK-NEXT:    ret <2 x i32> [[C]]
;
  %B = ashr <2 x i32> %A, <i32 31, i32 31>
  %C = sub <2 x i32> zeroinitializer, %B
  ret <2 x i32> %C
}

define <2 x i32> @test13vec(<2 x i32> %A) {
; CHECK-LABEL: @test13vec(
; CHECK-NEXT:    [[C:%.*]] = ashr <2 x i32> %A, <i32 31, i32 31>
; CHECK-NEXT:    ret <2 x i32> [[C]]
;
  %B = lshr <2 x i32> %A, <i32 31, i32 31>
  %C = sub <2 x i32> zeroinitializer, %B
  ret <2 x i32> %C
}

define i32 @test15(i32 %A, i32 %B) {
; CHECK-LABEL: @test15(
; CHECK-NEXT:    [[C:%.*]] = sub i32 0, %A
; CHECK-NEXT:    [[D:%.*]] = srem i32 %B, [[C]]
; CHECK-NEXT:    ret i32 [[D]]
;
  %C = sub i32 0, %A
  %D = srem i32 %B, %C
  ret i32 %D
}

define i32 @test16(i32 %A) {
; CHECK-LABEL: @test16(
; CHECK-NEXT:    [[Y:%.*]] = sdiv i32 %A, -1123
; CHECK-NEXT:    ret i32 [[Y]]
;
  %X = sdiv i32 %A, 1123
  %Y = sub i32 0, %X
  ret i32 %Y
}

; Can't fold subtract here because negation it might oveflow.
; PR3142
define i32 @test17(i32 %A) {
; CHECK-LABEL: @test17(
; CHECK-NEXT:    [[B:%.*]] = sub i32 0, %A
; CHECK-NEXT:    [[C:%.*]] = sdiv i32 [[B]], 1234
; CHECK-NEXT:    ret i32 [[C]]
;
  %B = sub i32 0, %A
  %C = sdiv i32 %B, 1234
  ret i32 %C
}

define i64 @test18(i64 %Y) {
; CHECK-LABEL: @test18(
; CHECK-NEXT:    ret i64 0
;
  %tmp.4 = shl i64 %Y, 2
  %tmp.12 = shl i64 %Y, 2
  %tmp.8 = sub i64 %tmp.4, %tmp.12
  ret i64 %tmp.8
}

define i32 @test19(i32 %X, i32 %Y) {
; CHECK-LABEL: @test19(
; CHECK-NEXT:    ret i32 %X
;
  %Z = sub i32 %X, %Y
  %Q = add i32 %Z, %Y
  ret i32 %Q
}

define i1 @test20(i32 %g, i32 %h) {
; CHECK-LABEL: @test20(
; CHECK-NEXT:    [[TMP_4:%.*]] = icmp ne i32 %h, 0
; CHECK-NEXT:    ret i1 [[TMP_4]]
;
  %tmp.2 = sub i32 %g, %h
  %tmp.4 = icmp ne i32 %tmp.2, %g
  ret i1 %tmp.4
}

define i1 @test21(i32 %g, i32 %h) {
; CHECK-LABEL: @test21(
; CHECK-NEXT:    [[TMP_4:%.*]] = icmp ne i32 %h, 0
; CHECK-NEXT:    ret i1 [[TMP_4]]
;
  %tmp.2 = sub i32 %g, %h
  %tmp.4 = icmp ne i32 %tmp.2, %g
  ret i1 %tmp.4
}

; PR2298
define zeroext i1 @test22(i32 %a, i32 %b)  nounwind  {
; CHECK-LABEL: @test22(
; CHECK-NEXT:    [[TMP5:%.*]] = icmp eq i32 %b, %a
; CHECK-NEXT:    ret i1 [[TMP5]]
;
  %tmp2 = sub i32 0, %a
  %tmp4 = sub i32 0, %b
  %tmp5 = icmp eq i32 %tmp2, %tmp4
  ret i1 %tmp5
}

; rdar://7362831
define i32 @test23(i8* %P, i64 %A){
; CHECK-LABEL: @test23(
; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 %A to i32
; CHECK-NEXT:    ret i32 [[TMP1]]
;
  %B = getelementptr inbounds i8, i8* %P, i64 %A
  %C = ptrtoint i8* %B to i64
  %D = trunc i64 %C to i32
  %E = ptrtoint i8* %P to i64
  %F = trunc i64 %E to i32
  %G = sub i32 %D, %F
  ret i32 %G
}

define i8 @test23_as1(i8 addrspace(1)* %P, i16 %A) {
; CHECK-LABEL: @test23_as1(
; CHECK-NEXT:    [[TMP1:%.*]] = trunc i16 %A to i8
; CHECK-NEXT:    ret i8 [[TMP1]]
;
  %B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
  %C = ptrtoint i8 addrspace(1)* %B to i16
  %D = trunc i16 %C to i8
  %E = ptrtoint i8 addrspace(1)* %P to i16
  %F = trunc i16 %E to i8
  %G = sub i8 %D, %F
  ret i8 %G
}

define i64 @test24(i8* %P, i64 %A){
; CHECK-LABEL: @test24(
; CHECK-NEXT:    ret i64 %A
;
  %B = getelementptr inbounds i8, i8* %P, i64 %A
  %C = ptrtoint i8* %B to i64
  %E = ptrtoint i8* %P to i64
  %G = sub i64 %C, %E
  ret i64 %G
}

define i16 @test24_as1(i8 addrspace(1)* %P, i16 %A) {
; CHECK-LABEL: @test24_as1(
; CHECK-NEXT:    ret i16 %A
;
  %B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
  %C = ptrtoint i8 addrspace(1)* %B to i16
  %E = ptrtoint i8 addrspace(1)* %P to i16
  %G = sub i16 %C, %E
  ret i16 %G
}

define i64 @test24a(i8* %P, i64 %A){
; CHECK-LABEL: @test24a(
; CHECK-NEXT:    [[DIFF_NEG:%.*]] = sub i64 0, %A
; CHECK-NEXT:    ret i64 [[DIFF_NEG]]
;
  %B = getelementptr inbounds i8, i8* %P, i64 %A
  %C = ptrtoint i8* %B to i64
  %E = ptrtoint i8* %P to i64
  %G = sub i64 %E, %C
  ret i64 %G
}

define i16 @test24a_as1(i8 addrspace(1)* %P, i16 %A) {
; CHECK-LABEL: @test24a_as1(
; CHECK-NEXT:    [[DIFF_NEG:%.*]] = sub i16 0, %A
; CHECK-NEXT:    ret i16 [[DIFF_NEG]]
;
  %B = getelementptr inbounds i8, i8 addrspace(1)* %P, i16 %A
  %C = ptrtoint i8 addrspace(1)* %B to i16
  %E = ptrtoint i8 addrspace(1)* %P to i16
  %G = sub i16 %E, %C
  ret i16 %G
}


@Arr = external global [42 x i16]

define i64 @test24b(i8* %P, i64 %A){
; CHECK-LABEL: @test24b(
; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i64 %A, 1
; CHECK-NEXT:    ret i64 [[B_IDX]]
;
  %B = getelementptr inbounds [42 x i16], [42 x i16]* @Arr, i64 0, i64 %A
  %C = ptrtoint i16* %B to i64
  %G = sub i64 %C, ptrtoint ([42 x i16]* @Arr to i64)
  ret i64 %G
}


define i64 @test25(i8* %P, i64 %A){
; CHECK-LABEL: @test25(
; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i64 %A, 1
; CHECK-NEXT:    [[TMP1:%.*]] = add i64 [[B_IDX]], -84
; CHECK-NEXT:    ret i64 [[TMP1]]
;
  %B = getelementptr inbounds [42 x i16], [42 x i16]* @Arr, i64 0, i64 %A
  %C = ptrtoint i16* %B to i64
  %G = sub i64 %C, ptrtoint (i16* getelementptr ([42 x i16], [42 x i16]* @Arr, i64 1, i64 0) to i64)
  ret i64 %G
}

@Arr_as1 = external addrspace(1) global [42 x i16]

define i16 @test25_as1(i8 addrspace(1)* %P, i64 %A) {
; CHECK-LABEL: @test25_as1(
; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 %A to i16
; CHECK-NEXT:    [[B_IDX:%.*]] = shl nuw i16 [[TMP1]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = add i16 [[B_IDX]], -84
; CHECK-NEXT:    ret i16 [[TMP2]]
;
  %B = getelementptr inbounds [42 x i16], [42 x i16] addrspace(1)* @Arr_as1, i64 0, i64 %A
  %C = ptrtoint i16 addrspace(1)* %B to i16
  %G = sub i16 %C, ptrtoint (i16 addrspace(1)* getelementptr ([42 x i16], [42 x i16] addrspace(1)* @Arr_as1, i64 1, i64 0) to i16)
  ret i16 %G
}

define i32 @test26(i32 %x) {
; CHECK-LABEL: @test26(
; CHECK-NEXT:    [[NEG:%.*]] = shl i32 -3, %x
; CHECK-NEXT:    ret i32 [[NEG]]
;
  %shl = shl i32 3, %x
  %neg = sub i32 0, %shl
  ret i32 %neg
}

define i32 @test27(i32 %x, i32 %y) {
; CHECK-LABEL: @test27(
; CHECK-NEXT:    [[TMP1:%.*]] = shl i32 %y, 3
; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], %x
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %mul = mul i32 %y, -8
  %sub = sub i32 %x, %mul
  ret i32 %sub
}

define i32 @test28(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @test28(
; CHECK-NEXT:    [[TMP1:%.*]] = mul i32 %z, %y
; CHECK-NEXT:    [[SUB:%.*]] = add i32 [[TMP1]], %x
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %neg = sub i32 0, %z
  %mul = mul i32 %neg, %y
  %sub = sub i32 %x, %mul
  ret i32 %sub
}

define i64 @test29(i8* %foo, i64 %i, i64 %j) {
; CHECK-LABEL: @test29(
; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 %i, %j
; CHECK-NEXT:    ret i64 [[TMP1]]
;
  %gep1 = getelementptr inbounds i8, i8* %foo, i64 %i
  %gep2 = getelementptr inbounds i8, i8* %foo, i64 %j
  %cast1 = ptrtoint i8* %gep1 to i64
  %cast2 = ptrtoint i8* %gep2 to i64
  %sub = sub i64 %cast1, %cast2
  ret i64 %sub
}

define i64 @test30(i8* %foo, i64 %i, i64 %j) {
; CHECK-LABEL: @test30(
; CHECK-NEXT:    [[GEP1_IDX:%.*]] = shl nuw i64 %i, 2
; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 [[GEP1_IDX]], %j
; CHECK-NEXT:    ret i64 [[TMP1]]
;
  %bit = bitcast i8* %foo to i32*
  %gep1 = getelementptr inbounds i32, i32* %bit, i64 %i
  %gep2 = getelementptr inbounds i8, i8* %foo, i64 %j
  %cast1 = ptrtoint i32* %gep1 to i64
  %cast2 = ptrtoint i8* %gep2 to i64
  %sub = sub i64 %cast1, %cast2
  ret i64 %sub
}

define i16 @test30_as1(i8 addrspace(1)* %foo, i16 %i, i16 %j) {
; CHECK-LABEL: @test30_as1(
; CHECK-NEXT:    [[GEP1_IDX:%.*]] = shl nuw i16 %i, 2
; CHECK-NEXT:    [[TMP1:%.*]] = sub i16 [[GEP1_IDX]], %j
; CHECK-NEXT:    ret i16 [[TMP1]]
;
  %bit = bitcast i8 addrspace(1)* %foo to i32 addrspace(1)*
  %gep1 = getelementptr inbounds i32, i32 addrspace(1)* %bit, i16 %i
  %gep2 = getelementptr inbounds i8, i8 addrspace(1)* %foo, i16 %j
  %cast1 = ptrtoint i32 addrspace(1)* %gep1 to i16
  %cast2 = ptrtoint i8 addrspace(1)* %gep2 to i16
  %sub = sub i16 %cast1, %cast2
  ret i16 %sub
}

define <2 x i64> @test31(<2 x i64> %A) {
; CHECK-LABEL: @test31(
; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i64> %A, <i64 3, i64 4>
; CHECK-NEXT:    ret <2 x i64> [[SUB]]
;
  %xor = xor <2 x i64> %A, <i64 -1, i64 -1>
  %sub = sub <2 x i64> <i64 2, i64 3>, %xor
  ret <2 x i64> %sub
}

define <2 x i64> @test32(<2 x i64> %A) {
; CHECK-LABEL: @test32(
; CHECK-NEXT:    [[SUB:%.*]] = sub <2 x i64> <i64 3, i64 4>, %A
; CHECK-NEXT:    ret <2 x i64> [[SUB]]
;
  %add = add <2 x i64> %A, <i64 -1, i64 -1>
  %sub = sub <2 x i64> <i64 2, i64 3>, %add
  ret <2 x i64> %sub
}

define <2 x i64> @test33(<2 x i1> %A) {
; CHECK-LABEL: @test33(
; CHECK-NEXT:    [[SUB:%.*]] = sext <2 x i1> %A to <2 x i64>
; CHECK-NEXT:    ret <2 x i64> [[SUB]]
;
  %ext = zext <2 x i1> %A to <2 x i64>
  %sub = sub <2 x i64> zeroinitializer, %ext
  ret <2 x i64> %sub
}

define <2 x i64> @test34(<2 x i1> %A) {
; CHECK-LABEL: @test34(
; CHECK-NEXT:    [[SUB:%.*]] = zext <2 x i1> %A to <2 x i64>
; CHECK-NEXT:    ret <2 x i64> [[SUB]]
;
  %ext = sext <2 x i1> %A to <2 x i64>
  %sub = sub <2 x i64> zeroinitializer, %ext
  ret <2 x i64> %sub
}

define <2 x i64> @test35(<2 x i64> %A) {
; CHECK-LABEL: @test35(
; CHECK-NEXT:    [[SUB:%.*]] = mul <2 x i64> %A, <i64 -2, i64 -3>
; CHECK-NEXT:    ret <2 x i64> [[SUB]]
;
  %mul = mul <2 x i64> %A, <i64 3, i64 4>
  %sub = sub <2 x i64> %A, %mul
  ret <2 x i64> %sub
}

define <2 x i64> @test36(<2 x i64> %A) {
; CHECK-LABEL: @test36(
; CHECK-NEXT:    [[SUB:%.*]] = mul <2 x i64> %A, <i64 7, i64 15>
; CHECK-NEXT:    ret <2 x i64> [[SUB]]
;
  %shl = shl <2 x i64> %A, <i64 3, i64 4>
  %sub = sub <2 x i64> %shl, %A
  ret <2 x i64> %sub
}

define <2 x i32> @test37(<2 x i32> %A) {
; CHECK-LABEL: @test37(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq <2 x i32> %A, <i32 -2147483648, i32 -2147483648>
; CHECK-NEXT:    [[SUB:%.*]] = sext <2 x i1> [[TMP1]] to <2 x i32>
; CHECK-NEXT:    ret <2 x i32> [[SUB]]
;
  %div = sdiv <2 x i32> %A, <i32 -2147483648, i32 -2147483648>
  %sub = sub nsw <2 x i32> zeroinitializer, %div
  ret <2 x i32> %sub
}

define i32 @test38(i32 %A) {
; CHECK-LABEL: @test38(
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i32 %A, -2147483648
; CHECK-NEXT:    [[SUB:%.*]] = sext i1 [[TMP1]] to i32
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %div = sdiv i32 %A, -2147483648
  %sub = sub nsw i32 0, %div
  ret i32 %sub
}

define i32 @test39(i32 %A, i32 %x) {
; CHECK-LABEL: @test39(
; CHECK-NEXT:    [[C:%.*]] = add i32 %x, %A
; CHECK-NEXT:    ret i32 [[C]]
;
  %B = sub i32 0, %A
  %C = sub nsw i32 %x, %B
  ret i32 %C
}

define i16 @test40(i16 %a, i16 %b) {
; CHECK-LABEL: @test40(
; CHECK-NEXT:    [[ASHR:%.*]] = ashr i16 %a, 1
; CHECK-NEXT:    [[ASHR1:%.*]] = ashr i16 %b, 1
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i16 [[ASHR]], [[ASHR1]]
; CHECK-NEXT:    ret i16 [[SUB]]
;
  %ashr = ashr i16 %a, 1
  %ashr1 = ashr i16 %b, 1
  %sub = sub i16 %ashr, %ashr1
  ret i16 %sub
}

define i32 @test41(i16 %a, i16 %b) {
; CHECK-LABEL: @test41(
; CHECK-NEXT:    [[CONV:%.*]] = sext i16 %a to i32
; CHECK-NEXT:    [[CONV1:%.*]] = sext i16 %b to i32
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i32 [[CONV]], [[CONV1]]
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %conv = sext i16 %a to i32
  %conv1 = sext i16 %b to i32
  %sub = sub i32 %conv, %conv1
  ret i32 %sub
}

define i4 @test42(i4 %x, i4 %y) {
; CHECK-LABEL: @test42(
; CHECK-NEXT:    [[A:%.*]] = and i4 %y, 7
; CHECK-NEXT:    [[B:%.*]] = and i4 %x, 7
; CHECK-NEXT:    [[C:%.*]] = sub nsw i4 [[A]], [[B]]
; CHECK-NEXT:    ret i4 [[C]]
;
  %a = and i4 %y, 7
  %b = and i4 %x, 7
  %c = sub i4 %a, %b
  ret i4 %c
}

define i4 @test43(i4 %x, i4 %y) {
; CHECK-LABEL: @test43(
; CHECK-NEXT:    [[A:%.*]] = or i4 %x, -8
; CHECK-NEXT:    [[B:%.*]] = and i4 %y, 7
; CHECK-NEXT:    [[C:%.*]] = sub nuw i4 [[A]], [[B]]
; CHECK-NEXT:    ret i4 [[C]]
;
  %a = or i4 %x, -8
  %b = and i4 %y, 7
  %c = sub i4 %a, %b
  ret i4 %c
}

define i32 @test44(i32 %x) {
; CHECK-LABEL: @test44(
; CHECK-NEXT:    [[SUB:%.*]] = add nsw i32 %x, -32768
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %sub = sub nsw i32 %x, 32768
  ret i32 %sub
}

define i32 @test45(i32 %x, i32 %y) {
; CHECK-LABEL: @test45(
; CHECK-NEXT:    [[SUB:%.*]] = and i32 %x, %y
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %or = or i32 %x, %y
  %xor = xor i32 %x, %y
  %sub = sub i32 %or, %xor
  ret i32 %sub
}

define i32 @test46(i32 %x, i32 %y) {
; CHECK-LABEL: @test46(
; CHECK-NEXT:    [[X_NOT:%.*]] = xor i32 %x, -1
; CHECK-NEXT:    [[SUB:%.*]] = and i32 %y, [[X_NOT]]
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %or = or i32 %x, %y
  %sub = sub i32 %or, %x
  ret i32 %sub
}

define i32 @test47(i1 %A, i32 %B, i32 %C, i32 %D) {
; CHECK-LABEL: @test47(
; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 %D, %C
; CHECK-NEXT:    [[SUB:%.*]] = select i1 %A, i32 [[TMP1]], i32 0
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %sel0 = select i1 %A, i32 %D, i32 %B
  %sel1 = select i1 %A, i32 %C, i32 %B
  %sub = sub i32 %sel0, %sel1
  ret i32 %sub
}

define i32 @test48(i1 %A, i32 %B, i32 %C, i32 %D) {
; CHECK-LABEL: @test48(
; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 %D, %C
; CHECK-NEXT:    [[SUB:%.*]] = select i1 %A, i32 0, i32 [[TMP1]]
; CHECK-NEXT:    ret i32 [[SUB]]
;
  %sel0 = select i1 %A, i32 %B, i32 %D
  %sel1 = select i1 %A, i32 %B, i32 %C
  %sub = sub i32 %sel0, %sel1
  ret i32 %sub
}

; Zext+add is more canonical than sext+sub.

define i8 @bool_sext_sub(i8 %x, i1 %y) {
; CHECK-LABEL: @bool_sext_sub(
; CHECK-NEXT:    [[TMP1:%.*]] = zext i1 %y to i8
; CHECK-NEXT:    [[SUB:%.*]] = add i8 [[TMP1]], %x
; CHECK-NEXT:    ret i8 [[SUB]]
;
  %sext = sext i1 %y to i8
  %sub = sub i8 %x, %sext
  ret i8 %sub
}

; Vectors get the same transform.

define <2 x i8> @bool_sext_sub_vec(<2 x i8> %x, <2 x i1> %y) {
; CHECK-LABEL: @bool_sext_sub_vec(
; CHECK-NEXT:    [[TMP1:%.*]] = zext <2 x i1> %y to <2 x i8>
; CHECK-NEXT:    [[SUB:%.*]] = add <2 x i8> [[TMP1]], %x
; CHECK-NEXT:    ret <2 x i8> [[SUB]]
;
  %sext = sext <2 x i1> %y to <2 x i8>
  %sub = sub <2 x i8> %x, %sext
  ret <2 x i8> %sub
}

; NSW is preserved.

define <2 x i8> @bool_sext_sub_vec_nsw(<2 x i8> %x, <2 x i1> %y) {
; CHECK-LABEL: @bool_sext_sub_vec_nsw(
; CHECK-NEXT:    [[TMP1:%.*]] = zext <2 x i1> %y to <2 x i8>
; CHECK-NEXT:    [[SUB:%.*]] = add nsw <2 x i8> [[TMP1]], %x
; CHECK-NEXT:    ret <2 x i8> [[SUB]]
;
  %sext = sext <2 x i1> %y to <2 x i8>
  %sub = sub nsw <2 x i8> %x, %sext
  ret <2 x i8> %sub
}

; We favor the canonical zext+add over keeping the NUW.

define i8 @bool_sext_sub_nuw(i8 %x, i1 %y) {
; CHECK-LABEL: @bool_sext_sub_nuw(
; CHECK-NEXT:    [[TMP1:%.*]] = zext i1 %y to i8
; CHECK-NEXT:    [[SUB:%.*]] = add i8 [[TMP1]], %x
; CHECK-NEXT:    ret i8 [[SUB]]
;
  %sext = sext i1 %y to i8
  %sub = sub nuw i8 %x, %sext
  ret i8 %sub
}