llvm/test/Transforms/PhaseOrdering/reassociate-gvn-bdce.ll

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

; (~(a | b) & c) | ~(a | (b | c)) -> ~(a | b)
; (~(a | b) & c) | ~(b | (a | c)) -> ~(a | b)

define i32 @not_or_and_or_not_or_or(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_or_and_or_not_or_or(
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %or1 = or i32 %b, %c
  %or2 = or i32 %or1, %a
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %b, %a
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %not2, %c
  %or4 = or i32 %and2, %not1
  ret i32 %or4
}

define i32 @not_or_and_or_not_or_or_commute1(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_or_and_or_not_or_or_commute1(
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %or1 = or i32 %a, %c
  %or2 = or i32 %or1, %b
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %b, %a
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %not2, %c
  %or4 = or i32 %and2, %not1
  ret i32 %or4
}

define i32 @not_or_and_or_not_or_or_commute2(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_or_and_or_not_or_or_commute2(
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %or1 = or i32 %c, %b
  %or2 = or i32 %or1, %a
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %b, %a
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %not2, %c
  %or4 = or i32 %and2, %not1
  ret i32 %or4
}

define i32 @not_or_and_or_not_or_or_commute3(i32 %a0, i32 %b, i32 %c) {
; CHECK-LABEL: @not_or_and_or_not_or_or_commute3(
; CHECK-NEXT:    [[A:%.*]] = sdiv i32 42, [[A0:%.*]]
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[A]], [[B:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %a = sdiv i32 42, %a0 ; thwart complexity-based canonicalization
  %or1 = or i32 %b, %c
  %or2 = or i32 %a, %or1
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %a, %b
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %not2, %c
  %or4 = or i32 %and2, %not1
  ret i32 %or4
}

define i32 @not_or_and_or_not_or_or_commute4(i32 %a, i32 %b0, i32 %c) {
; CHECK-LABEL: @not_or_and_or_not_or_or_commute4(
; CHECK-NEXT:    [[B:%.*]] = sdiv i32 42, [[B0:%.*]]
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[B]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %b = sdiv i32 42, %b0 ; thwart complexity-based canonicalization
  %or1 = or i32 %a, %c
  %or2 = or i32 %b, %or1
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %b, %a
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %not2, %c
  %or4 = or i32 %and2, %not1
  ret i32 %or4
}

define i32 @not_or_and_or_not_or_or_commute5(i32 %a, i32 %b, i32 %c0) {
; CHECK-LABEL: @not_or_and_or_not_or_or_commute5(
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %c = sdiv i32 42, %c0 ; thwart complexity-based canonicalization
  %or1 = or i32 %c, %a
  %or2 = or i32 %or1, %b
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %b, %a
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %c, %not2
  %or4 = or i32 %and2, %not1
  ret i32 %or4
}

define i32 @not_or_and_or_not_or_or_use1(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_or_and_or_not_or_or_use1(
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
; CHECK-NEXT:    [[NOT1:%.*]] = xor i32 [[OR2]], -1
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    call void @use(i32 [[NOT1]])
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %or1 = or i32 %b, %c
  %or2 = or i32 %or1, %a
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %b, %a
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %not2, %c
  %or4 = or i32 %and2, %not1
  call void @use(i32 %not1)
  ret i32 %or4
}

define i32 @not_or_and_or_not_or_or_use2(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_or_and_or_not_or_or_use2(
; CHECK-NEXT:    [[OR1:%.*]] = or i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
; CHECK-NEXT:    [[NOT1:%.*]] = xor i32 [[OR2]], -1
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[OR1]], -1
; CHECK-NEXT:    call void @use(i32 [[NOT1]])
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %or1 = or i32 %a, %c
  %or2 = or i32 %or1, %b
  %not1 = xor i32 %or2, -1
  %or3 = or i32 %b, %a
  %not2 = xor i32 %or3, -1
  %and2 = and i32 %not2, %c
  %or4 = or i32 %and2, %not1
  call void @use(i32 %not1)
  ret i32 %or4
}

; (~(a & b) | c) & ~(a & (b & c)) -> ~(a & b)
; (~(a & b) | c) & ~(b & (a & c)) -> ~(a & b)

define i32 @not_and_or_and_not_and_and(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_or_and_not_and_and(
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %and1 = and i32 %b, %c
  %and2 = and i32 %and1, %a
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %b, %a
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %not2, %c
  %and4 = and i32 %or2, %not1
  ret i32 %and4
}

define i32 @not_and_or_and_not_and_and_commute1(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_or_and_not_and_and_commute1(
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %and1 = and i32 %a, %c
  %and2 = and i32 %and1, %b
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %b, %a
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %not2, %c
  %and4 = and i32 %or2, %not1
  ret i32 %and4
}

define i32 @not_and_or_and_not_and_and_commute2(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_or_and_not_and_and_commute2(
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %and1 = and i32 %c, %b
  %and2 = and i32 %and1, %a
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %b, %a
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %not2, %c
  %and4 = and i32 %or2, %not1
  ret i32 %and4
}

define i32 @not_and_or_and_not_and_and_commute3(i32 %a0, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_or_and_not_and_and_commute3(
; CHECK-NEXT:    [[A:%.*]] = sdiv i32 42, [[A0:%.*]]
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[A]], [[B:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %a = sdiv i32 42, %a0 ; thwart complexity-based canonicalization
  %and1 = and i32 %b, %c
  %and2 = and i32 %a, %and1
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %a, %b
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %not2, %c
  %and4 = and i32 %or2, %not1
  ret i32 %and4
}

define i32 @not_and_or_and_not_and_and_commute4(i32 %a, i32 %b0, i32 %c) {
; CHECK-LABEL: @not_and_or_and_not_and_and_commute4(
; CHECK-NEXT:    [[B:%.*]] = sdiv i32 42, [[B0:%.*]]
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[B]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %b = sdiv i32 42, %b0 ; thwart complexity-based canonicalization
  %and1 = and i32 %a, %c
  %and2 = and i32 %b, %and1
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %b, %a
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %not2, %c
  %and4 = and i32 %or2, %not1
  ret i32 %and4
}

define i32 @not_and_or_and_not_and_and_commute5(i32 %a, i32 %b, i32 %c0) {
; CHECK-LABEL: @not_and_or_and_not_and_and_commute5(
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %c = sdiv i32 42, %c0 ; thwart complexity-based canonicalization
  %and1 = and i32 %c, %a
  %and2 = and i32 %and1, %b
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %b, %a
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %c, %not2
  %and4 = and i32 %or2, %not1
  ret i32 %and4
}

define i32 @not_and_or_and_not_and_and_use1(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_or_and_not_and_and_use1(
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
; CHECK-NEXT:    [[NOT1:%.*]] = xor i32 [[AND2]], -1
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    call void @use(i32 [[NOT1]])
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %and1 = and i32 %b, %c
  %and2 = and i32 %and1, %a
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %b, %a
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %not2, %c
  %and4 = and i32 %or2, %not1
  call void @use(i32 %not1)
  ret i32 %and4
}

define i32 @not_and_or_and_not_and_and_use2(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_or_and_not_and_and_use2(
; CHECK-NEXT:    [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
; CHECK-NEXT:    [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
; CHECK-NEXT:    [[NOT1:%.*]] = xor i32 [[AND2]], -1
; CHECK-NEXT:    [[NOT2:%.*]] = xor i32 [[AND1]], -1
; CHECK-NEXT:    call void @use(i32 [[NOT1]])
; CHECK-NEXT:    ret i32 [[NOT2]]
;
  %and1 = and i32 %a, %c
  %and2 = and i32 %and1, %b
  %not1 = xor i32 %and2, -1
  %and3 = and i32 %b, %a
  %not2 = xor i32 %and3, -1
  %or2 = or i32 %not2, %c
  %and4 = and i32 %or2, %not1
  call void @use(i32 %not1)
  ret i32 %and4
}

declare void @use(i32)