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[InstSimplify] add tests for logical-and/or reduction; NFC
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issue #60167
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rotateright committed Jan 20, 2023
1 parent aef9531 commit 5542bbf
Showing 1 changed file with 55 additions and 0 deletions.
55 changes: 55 additions & 0 deletions llvm/test/Transforms/InstSimplify/select-logical.ll
Expand Up @@ -585,3 +585,58 @@ define i1 @always_false_same_op(i1 %x) {
%r = select i1 %x, i1 false, i1 %x
ret i1 %r
}

define i1 @or_and_common_op_commute0(i1 %x, i1 %y) {
; CHECK-LABEL: @or_and_common_op_commute0(
; CHECK-NEXT: [[A:%.*]] = select i1 [[X:%.*]], i1 [[Y:%.*]], i1 false
; CHECK-NEXT: [[R:%.*]] = select i1 [[A]], i1 true, i1 [[Y]]
; CHECK-NEXT: ret i1 [[R]]
;
%a = select i1 %x, i1 %y, i1 false
%r = select i1 %a, i1 true, i1 %y
ret i1 %r
}

define <2 x i1> @or_and_common_op_commute1(<2 x i1> %x, <2 x i1> %y) {
; CHECK-LABEL: @or_and_common_op_commute1(
; CHECK-NEXT: [[A:%.*]] = select <2 x i1> [[Y:%.*]], <2 x i1> [[X:%.*]], <2 x i1> zeroinitializer
; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[A]], <2 x i1> <i1 true, i1 true>, <2 x i1> [[Y]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%a = select <2 x i1> %y, <2 x i1> %x, <2 x i1> zeroinitializer
%r = select <2 x i1> %a, <2 x i1> <i1 true, i1 true>, <2 x i1> %y
ret <2 x i1> %r
}

define <2 x i1> @or_and_common_op_commute2(<2 x i1> %x, <2 x i1> %y) {
; CHECK-LABEL: @or_and_common_op_commute2(
; CHECK-NEXT: [[A:%.*]] = select <2 x i1> [[X:%.*]], <2 x i1> [[Y:%.*]], <2 x i1> <i1 false, i1 poison>
; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[Y]], <2 x i1> <i1 true, i1 true>, <2 x i1> [[A]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%a = select <2 x i1> %x, <2 x i1> %y, <2 x i1> <i1 0, i1 poison>
%r = select <2 x i1> %y, <2 x i1> <i1 true, i1 true>, <2 x i1> %a
ret <2 x i1> %r
}

define <2 x i1> @or_and_common_op_commute3(<2 x i1> %x, <2 x i1> %y) {
; CHECK-LABEL: @or_and_common_op_commute3(
; CHECK-NEXT: [[A:%.*]] = select <2 x i1> [[Y:%.*]], <2 x i1> [[X:%.*]], <2 x i1> zeroinitializer
; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[Y]], <2 x i1> <i1 poison, i1 true>, <2 x i1> [[A]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%a = select <2 x i1> %y, <2 x i1> %x, <2 x i1> zeroinitializer
%r = select <2 x i1> %y, <2 x i1> <i1 poison, i1 true>, <2 x i1> %a
ret <2 x i1> %r
}

define i1 @or_and_not_common_op(i1 %x, i1 %y, i1 %z) {
; CHECK-LABEL: @or_and_not_common_op(
; CHECK-NEXT: [[A:%.*]] = select i1 [[X:%.*]], i1 [[Y:%.*]], i1 false
; CHECK-NEXT: [[R:%.*]] = select i1 [[A]], i1 true, i1 [[Z:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%a = select i1 %x, i1 %y, i1 false
%r = select i1 %a, i1 true, i1 %z
ret i1 %r
}

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