; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc -mtriple=aarch64 -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SD
; RUN: llc -mtriple=aarch64 -global-isel -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-GI



define i64 @APlusC1MinusC2(i64 %a) {
; CHECK-LABEL: APlusC1MinusC2:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    sub x0, x0, #1
; CHECK-NEXT:    ret
entry:
; fold (A+C1)-C2 -> A+(C1-C2)
  %add1 = add i64 %a, 5
  %sub1 = sub i64 %add1, 6
  ret i64 %sub1
}

define i64 @C2MinusAPlusC1(i64 %a) {
; CHECK-LABEL: C2MinusAPlusC1:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    mov w8, #3 // =0x3
; CHECK-NEXT:    sub x0, x8, x0
; CHECK-NEXT:    ret
entry:
;  fold C2-(A+C1) -> (C2-C1)-A
  %add1 = add i64 %a, 6
  %sub1 = sub i64 9, %add1
  ret i64 %sub1
}

define i64 @AMinusC1MinusC2(i64 %a) {
; CHECK-LABEL: AMinusC1MinusC2:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    sub x0, x0, #15
; CHECK-NEXT:    ret
entry:
; fold (A-C1)-C2 -> A-(C1+C2)
  %sub2 = sub i64 %a, 6
  %sub1 = sub i64 %sub2, 9
  ret i64 %sub1
}

define i64 @C1Minus2MinusC2(i64 %a) {
; CHECK-LABEL: C1Minus2MinusC2:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    mov w8, #3 // =0x3
; CHECK-NEXT:    sub x0, x8, x0
; CHECK-NEXT:    ret
entry:
; fold (C1-A)-C2 -> (C1-C2)-A
  %sub2 = sub i64 14, %a
  %sub1 = sub i64 %sub2, 11
  ret i64 %sub1
}

define i64 @AMinusC2PlusC2(i64 %a) {
; CHECK-LABEL: AMinusC2PlusC2:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    sub x0, x0, #4
; CHECK-NEXT:    ret
entry:
; fold ((A-C1)+C2) -> (A+(C2-C1))
  %sub1 = sub i64 %a, 21
  %add1 = add i64 %sub1, 17
  ret i64 %add1
}

define i64 @AMinusZeroMinusB(i64 %a, i64 %b) {
; CHECK-LABEL: AMinusZeroMinusB:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    add x0, x0, x1
; CHECK-NEXT:    ret

entry:
; fold (A - (0 - B)) to (A + B)
  %sub1 = sub i64 0, %b
  %sub2 = sub i64 %a, %sub1
  ret i64 %sub2
}

define <4 x i16> @AMinusZeroMinusB_vector(<4 x i16> %a, <4 x i16> %b) {
; CHECK-LABEL: AMinusZeroMinusB_vector:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    add v0.4h, v0.4h, v1.4h
; CHECK-NEXT:    ret

entry:
; fold (A - (0 - B)) to (A + B)
  %sub1 = sub <4 x i16> <i16 0, i16 0, i16 0, i16 0>, %b
  %sub2 = sub <4 x i16> %a, %sub1
  ret  <4 x i16> %sub2
}

define i64 @AMinusBMinusA(i64 %a, i64 %b) {
; CHECK-LABEL: AMinusBMinusA:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    mov x0, x1
; CHECK-NEXT:    ret
entry:
; fold A - (A - B) -> B
  %sub1 = sub i64 %a, %b
  %sub2 = sub i64 %a, %sub1
  ret i64 %sub2
}

define <4 x i16> @AMinusBMinusA_vec(<4 x i16> %a, <4 x i16> %b) {
; CHECK-LABEL: AMinusBMinusA_vec:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fmov d0, d1
; CHECK-NEXT:    ret
entry:
; fold A - (A - B) -> B
  %sub1 = sub <4 x i16> %a, %b
  %sub2 = sub <4 x i16> %a, %sub1
  ret <4 x i16> %sub2
}

;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; CHECK-GI: {{.*}}
; CHECK-SD: {{.*}}