ret i32 %or
}
-; (A & B) | ~(A ^ B) -> ~(A ^ B)
-
-define i32 @test55(i32 %a, i32 %b) {
-; CHECK-LABEL: @test55(
-; CHECK-NEXT: [[AND:%.*]] = and i32 [[A:%.*]], [[B:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[A]], [[B]]
-; CHECK-NEXT: [[XNOR:%.*]] = xor i32 [[XOR]], -1
-; CHECK-NEXT: [[OR:%.*]] = or i32 [[AND]], [[XNOR]]
-; CHECK-NEXT: ret i32 [[OR]]
-;
- %and = and i32 %a, %b
- %xor = xor i32 %a, %b
- %xnor = xor i32 %xor, -1
- %or = or i32 %and, %xnor
- ret i32 %or
-}
-
-; ~(A ^ B) | (A & B) -> ~(A ^ B)
-
-define i32 @test56(i32 %a, i32 %b) {
-; CHECK-LABEL: @test56(
-; CHECK-NEXT: [[AND:%.*]] = and i32 [[A:%.*]], [[B:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[A]], [[B]]
-; CHECK-NEXT: [[XNOR:%.*]] = xor i32 [[XOR]], -1
-; CHECK-NEXT: [[OR:%.*]] = or i32 [[XNOR]], [[AND]]
-; CHECK-NEXT: ret i32 [[OR]]
-;
- %and = and i32 %a, %b
- %xor = xor i32 %a, %b
- %xnor = xor i32 %xor, -1
- %or = or i32 %xnor, %and
- ret i32 %or
-}
-
-; (B & A) | ~(A ^ B) -> ~(A ^ B)
-
-define i32 @test57(i32 %a, i32 %b) {
-; CHECK-LABEL: @test57(
-; CHECK-NEXT: [[AND:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[A]], [[B]]
-; CHECK-NEXT: [[XNOR:%.*]] = xor i32 [[XOR]], -1
-; CHECK-NEXT: [[OR:%.*]] = or i32 [[AND]], [[XNOR]]
-; CHECK-NEXT: ret i32 [[OR]]
-;
- %and = and i32 %b, %a
- %xor = xor i32 %a, %b
- %xnor = xor i32 %xor, -1
- %or = or i32 %and, %xnor
- ret i32 %or
-}
-
-; ~(A ^ B) | (A & B) -> ~(A ^ B)
-
-define i32 @test58(i32 %a, i32 %b) {
-; CHECK-LABEL: @test58(
-; CHECK-NEXT: [[AND:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[A]], [[B]]
-; CHECK-NEXT: [[XNOR:%.*]] = xor i32 [[XOR]], -1
-; CHECK-NEXT: [[OR:%.*]] = or i32 [[XNOR]], [[AND]]
-; CHECK-NEXT: ret i32 [[OR]]
-;
- %and = and i32 %b, %a
- %xor = xor i32 %a, %b
- %xnor = xor i32 %xor, -1
- %or = or i32 %xnor, %and
- ret i32 %or
-}
-
define i8 @lshr_perfect_mask(i8 %x) {
; CHECK-LABEL: @lshr_perfect_mask(
; CHECK-NEXT: [[SH:%.*]] = lshr i8 [[X:%.*]], 5
ret i32 %o
}
+; (A & B) | ~(A ^ B) --> ~(A ^ B)
+
define i4 @or_nxor_and_commute0(i4 %a, i4 %b) {
; CHECK-LABEL: @or_nxor_and_commute0(
-; CHECK-NEXT: [[AND:%.*]] = and i4 [[A:%.*]], [[B:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor i4 [[A]], [[B]]
+; CHECK-NEXT: [[XOR:%.*]] = xor i4 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[NOT:%.*]] = xor i4 [[XOR]], -1
-; CHECK-NEXT: [[R:%.*]] = or i4 [[AND]], [[NOT]]
-; CHECK-NEXT: ret i4 [[R]]
+; CHECK-NEXT: ret i4 [[NOT]]
;
%and = and i4 %a, %b
%xor = xor i4 %a, %b
define <2 x i4> @or_nxor_and_commute1(<2 x i4> %a, <2 x i4> %b) {
; CHECK-LABEL: @or_nxor_and_commute1(
-; CHECK-NEXT: [[AND:%.*]] = and <2 x i4> [[A:%.*]], [[B:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i4> [[A]], [[B]]
+; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i4> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[NOT:%.*]] = xor <2 x i4> [[XOR]], <i4 -1, i4 -1>
-; CHECK-NEXT: [[R:%.*]] = or <2 x i4> [[NOT]], [[AND]]
-; CHECK-NEXT: ret <2 x i4> [[R]]
+; CHECK-NEXT: ret <2 x i4> [[NOT]]
;
%and = and <2 x i4> %a, %b
%xor = xor <2 x i4> %a, %b
define i74 @or_nxor_and_commute2(i74 %a, i74 %b) {
; CHECK-LABEL: @or_nxor_and_commute2(
-; CHECK-NEXT: [[AND:%.*]] = and i74 [[B:%.*]], [[A:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor i74 [[A]], [[B]]
+; CHECK-NEXT: [[XOR:%.*]] = xor i74 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[NOT:%.*]] = xor i74 [[XOR]], -1
-; CHECK-NEXT: [[R:%.*]] = or i74 [[AND]], [[NOT]]
-; CHECK-NEXT: ret i74 [[R]]
+; CHECK-NEXT: ret i74 [[NOT]]
;
%and = and i74 %b, %a
%xor = xor i74 %a, %b
define <2 x i4> @or_nxor_and_commute3(<2 x i4> %a, <2 x i4> %b) {
; CHECK-LABEL: @or_nxor_and_commute3(
-; CHECK-NEXT: [[AND:%.*]] = and <2 x i4> [[B:%.*]], [[A:%.*]]
-; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i4> [[A]], [[B]]
+; CHECK-NEXT: [[XOR:%.*]] = xor <2 x i4> [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: [[NOT:%.*]] = xor <2 x i4> [[XOR]], <i4 -1, i4 -1>
-; CHECK-NEXT: [[R:%.*]] = or <2 x i4> [[NOT]], [[AND]]
-; CHECK-NEXT: ret <2 x i4> [[R]]
+; CHECK-NEXT: ret <2 x i4> [[NOT]]
;
%and = and <2 x i4> %b, %a
%xor = xor <2 x i4> %a, %b
ret <2 x i4> %r
}
+; negative test - must have common operands
+
define i4 @or_nxor_and_wrong_val1(i4 %a, i4 %b, i4 %c) {
; CHECK-LABEL: @or_nxor_and_wrong_val1(
; CHECK-NEXT: [[AND:%.*]] = and i4 [[A:%.*]], [[C:%.*]]
ret i4 %r
}
+; negative test - must have common operands
+
define i4 @or_nxor_and_wrong_val2(i4 %a, i4 %b, i4 %c) {
; CHECK-LABEL: @or_nxor_and_wrong_val2(
; CHECK-NEXT: [[AND:%.*]] = and i4 [[C:%.*]], [[B:%.*]]
ret i4 %r
}
+; negative test - undef in 'not' is allowed
+
define <2 x i4> @or_nxor_and_undef_elt(<2 x i4> %a, <2 x i4> %b) {
; CHECK-LABEL: @or_nxor_and_undef_elt(
; CHECK-NEXT: [[AND:%.*]] = and <2 x i4> [[B:%.*]], [[A:%.*]]
ret i4 %r
}
-; undef in 'not' is allowed
+; negative test - undef in 'not' is allowed
define <2 x i4> @or_nxor_or_undef_elt(<2 x i4> %a, <2 x i4> %b) {
; CHECK-LABEL: @or_nxor_or_undef_elt(