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Precommit updated InstCombine/and-xor-or.ll test. NFC.

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Stanislav Mekhanoshin 2021-10-20 12:50:23 -07:00
parent 8977bd5806
commit 3c59cdee5c
1 changed files with 26 additions and 6 deletions
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32
llvm/test/Transforms/InstCombine/and-xor-or.ll
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@ -555,16 +555,14 @@ define <4 x i64> @not_and_and_not_4i64(<4 x i64> %a0, <4 x i64> %b, <4 x i64> %c
; (~b & a) & ~c --> a & ~(b | c)
define i32 @not_and_and_not_commute1(i32 %a0, i32 %b, i32 %c) {
define i32 @not_and_and_not_commute1(i32 %a, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_and_not_commute1(
; CHECK-NEXT: [[A:%.*]] = sdiv i32 42, [[A0:%.*]]
; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[B:%.*]], -1
; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[C:%.*]], -1
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[A]], [[NOT1]]
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[NOT1]], [[A:%.*]]
; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[NOT2]]
; CHECK-NEXT: ret i32 [[AND2]]
;
%a = sdiv i32 42, %a0 ; thwart complexity-based canonicalization
%not1 = xor i32 %b, -1
%not2 = xor i32 %c, -1
%and1 = and i32 %not1, %a
@ -574,13 +572,15 @@ define i32 @not_and_and_not_commute1(i32 %a0, i32 %b, i32 %c) {
; ~c & (a & ~b) --> a & ~(b | c)
define i32 @not_and_and_not_commute2(i32 %a0, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_and_not_commute2(
declare void @use(i32)
define i32 @not_and_and_not_commute2_extra_not_use(i32 %a0, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_and_not_commute2_extra_not_use(
; CHECK-NEXT: [[A:%.*]] = sdiv i32 42, [[A0:%.*]]
; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[B:%.*]], -1
; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[C:%.*]], -1
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[A]], [[NOT1]]
; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[NOT2]]
; CHECK-NEXT: call void @use(i32 [[NOT2]])
; CHECK-NEXT: ret i32 [[AND2]]
;
%a = sdiv i32 42, %a0 ; thwart complexity-based canonicalization
@ -588,5 +588,25 @@ define i32 @not_and_and_not_commute2(i32 %a0, i32 %b, i32 %c) {
%not2 = xor i32 %c, -1
%and1 = and i32 %a, %not1
%and2 = and i32 %not2, %and1
call void @use(i32 %not2)
ret i32 %and2
}
define i32 @not_and_and_not_extra_and1_use(i32 %a0, i32 %b, i32 %c) {
; CHECK-LABEL: @not_and_and_not_extra_and1_use(
; CHECK-NEXT: [[A:%.*]] = sdiv i32 42, [[A0:%.*]]
; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[B:%.*]], -1
; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[C:%.*]], -1
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[A]], [[NOT1]]
; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[NOT2]]
; CHECK-NEXT: call void @use(i32 [[AND1]])
; CHECK-NEXT: ret i32 [[AND2]]
;
%a = sdiv i32 42, %a0 ; thwart complexity-based canonicalization
%not1 = xor i32 %b, -1
%not2 = xor i32 %c, -1
%and1 = and i32 %a, %not1
%and2 = and i32 %and1, %not2
call void @use(i32 %and1)
ret i32 %and2
}