[llvm] 557f4ce - [InstCombine] Precommit updated and-xor-or.ll tests. NFC.
Stanislav Mekhanoshin via llvm-commits
llvm-commits at lists.llvm.org
Wed Nov 10 17:11:29 PST 2021
Author: Stanislav Mekhanoshin
Date: 2021-11-10T17:10:06-08:00
New Revision: 557f4ce0c3d2a9221ebd12897e6faf8e206bd2cc
URL: https://github.com/llvm/llvm-project/commit/557f4ce0c3d2a9221ebd12897e6faf8e206bd2cc
DIFF: https://github.com/llvm/llvm-project/commit/557f4ce0c3d2a9221ebd12897e6faf8e206bd2cc.diff
LOG: [InstCombine] Precommit updated and-xor-or.ll tests. NFC.
Tests for:
```
(a | ~(b & c)) & ~(a & (b ^ c)) --> ~(a | b) | (a ^ b ^ c)
(~(a & b) | c) & ~(a & (b & c)) -> ~(a & b)
(~(a & b) | c) & ~(b & (a & c)) -> ~(a & b)
(~a | b | c) & ~(a & b & c) -> ~a | (b ^ c)
(~a | b | c) & ~(a & b) -> (c & ~b) | ~a
```
Added:
Modified:
llvm/test/Transforms/InstCombine/and-xor-or.ll
Removed:
################################################################################
diff --git a/llvm/test/Transforms/InstCombine/and-xor-or.ll b/llvm/test/Transforms/InstCombine/and-xor-or.ll
index 5c89c10002ef..5b5517c4acf4 100644
--- a/llvm/test/Transforms/InstCombine/and-xor-or.ll
+++ b/llvm/test/Transforms/InstCombine/and-xor-or.ll
@@ -2353,6 +2353,265 @@ define i32 @and_not_or_or_not_or_xor_use6(i32 %a, i32 %b, i32 %c) {
ret i32 %or3
}
+; (a | ~(b & c)) & ~(a & (b ^ c)) --> ~(a | b) | (a ^ b ^ c)
+
+define i32 @or_not_and_and_not_and_xor(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_commute1(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_commute1(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[C:%.*]], [[B:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %c, %b
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_commute2(i32 %a0, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_commute2(
+; CHECK-NEXT: [[A:%.*]] = sdiv i32 42, [[A0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[A]], [[NOT1]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %a = sdiv i32 42, %a0 ; thwart complexity-based canonicalization
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %a, %not1
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_commute3(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_commute3(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[C]], [[B]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %c, %b
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_commute4(i32 %a0, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_commute4(
+; CHECK-NEXT: [[A:%.*]] = sdiv i32 42, [[A0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[A]], [[NOT1]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[A]], [[XOR1]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %a = sdiv i32 42, %a0 ; thwart complexity-based canonicalization
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %a, %not1
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %a, %xor1
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_commute5(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_commute5(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %not2, %or1
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_use1(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_use1(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: call void @use(i32 [[AND1]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ call void @use(i32 %and1)
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_use2(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_use2(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: call void @use(i32 [[NOT1]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ call void @use(i32 %not1)
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_use3(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_use3(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: call void @use(i32 [[OR1]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ call void @use(i32 %or1)
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_use4(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_use4(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: call void @use(i32 [[XOR1]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ call void @use(i32 %xor1)
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_use5(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_use5(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: call void @use(i32 [[AND2]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ call void @use(i32 %and2)
+ ret i32 %and3
+}
+
+define i32 @or_not_and_and_not_and_xor_use6(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @or_not_and_and_not_and_xor_use6(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT1]], [[A:%.*]]
+; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B]], [[C]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[XOR1]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND2]], -1
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR1]]
+; CHECK-NEXT: call void @use(i32 [[NOT2]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %not1 = xor i32 %and1, -1
+ %or1 = or i32 %not1, %a
+ %xor1 = xor i32 %b, %c
+ %and2 = and i32 %xor1, %a
+ %not2 = xor i32 %and2, -1
+ %and3 = and i32 %or1, %not2
+ call void @use(i32 %not2)
+ ret i32 %and3
+}
+
; (~a & b & c) | ~(a | b | c) -> ~(a | (b ^ c))
define i32 @not_and_and_or_not_or_or(i32 %a, i32 %b, i32 %c) {
@@ -2665,27 +2924,348 @@ define i32 @not_and_and_or_not_or_or_use5(i32 %a, i32 %b, i32 %c) {
ret i32 %or3
}
-define i32 @not_and_and_or_not_or_or_use6(i32 %a, i32 %b, i32 %c) {
-; CHECK-LABEL: @not_and_and_or_not_or_or_use6(
-; CHECK-NEXT: [[OR1:%.*]] = or i32 [[B:%.*]], [[A:%.*]]
-; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
-; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[OR2]], -1
+define i32 @not_and_and_or_not_or_or_use6(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_and_and_or_not_or_or_use6(
+; 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 [[A]], -1
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C]]
+; CHECK-NEXT: [[OR3:%.*]] = or i32 [[AND2]], [[NOT1]]
+; CHECK-NEXT: call void @use(i32 [[AND2]])
+; CHECK-NEXT: ret i32 [[OR3]]
+;
+ %or1 = or i32 %b, %a
+ %or2 = or i32 %or1, %c
+ %not1 = xor i32 %or2, -1
+ %not2 = xor i32 %a, -1
+ %and1 = and i32 %not2, %b
+ %and2 = and i32 %and1, %c
+ %or3 = or i32 %and2, %not1
+ call void @use(i32 %and2)
+ ret i32 %or3
+}
+
+; (~a | b | c) & ~(a & b & c) -> ~a | (b ^ c)
+
+define i32 @not_or_or_and_not_and_and(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute1_and(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute1_and(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[C:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[B:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %c, %a
+ %and2 = and i32 %and1, %b
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute2_and(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute2_and(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[A:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %c
+ %and2 = and i32 %and1, %a
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute1_or(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute1_or(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[B]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %c
+ %or2 = or i32 %or1, %b
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute2_or(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute2_or(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[B]], [[C]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[NOT2]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %b, %c
+ %or2 = or i32 %or1, %not2
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute1(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute1(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %a, %b
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute2(i32 %a, i32 %b, i32 %c0) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute2(
+; CHECK-NEXT: [[C:%.*]] = sdiv i32 42, [[C0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[C]], [[AND1]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %c = sdiv i32 42, %c0 ; thwart complexity-based canonicalization
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %c, %and1
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute3(i32 %a, i32 %b0, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute3(
+; CHECK-NEXT: [[B:%.*]] = sdiv i32 42, [[B0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[B]], [[NOT2]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %b = sdiv i32 42, %b0 ; thwart complexity-based canonicalization
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %b, %not2
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_commute4(i32 %a, i32 %b, i32 %c0) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_commute4(
+; CHECK-NEXT: [[C:%.*]] = sdiv i32 42, [[C0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[C]], [[OR1]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %c = sdiv i32 42, %c0 ; thwart complexity-based canonicalization
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %c, %or1
+ %and3 = and i32 %or2, %not1
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_use1(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_use1(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[AND1]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ call void @use(i32 %and1)
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_use2(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_use2(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[AND2]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ call void @use(i32 %and2)
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_use3(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_use3(
+; 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 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[NOT1]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ call void @use(i32 %not1)
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_use4(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_use4(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[NOT2]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ call void @use(i32 %not2)
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_use5(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_use5(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[OR1]])
+; CHECK-NEXT: ret i32 [[AND3]]
+;
+ %and1 = and i32 %b, %a
+ %and2 = and i32 %and1, %c
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ call void @use(i32 %or1)
+ ret i32 %and3
+}
+
+define i32 @not_or_or_and_not_and_and_use6(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_not_and_and_use6(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C:%.*]]
; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
-; CHECK-NEXT: [[AND1:%.*]] = and i32 [[NOT2]], [[B]]
-; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[C]]
-; CHECK-NEXT: [[OR3:%.*]] = or i32 [[AND2]], [[NOT1]]
-; CHECK-NEXT: call void @use(i32 [[AND2]])
-; CHECK-NEXT: ret i32 [[OR3]]
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C]]
+; CHECK-NEXT: [[AND3:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[OR2]])
+; CHECK-NEXT: ret i32 [[AND3]]
;
- %or1 = or i32 %b, %a
- %or2 = or i32 %or1, %c
- %not1 = xor i32 %or2, -1
- %not2 = xor i32 %a, -1
- %and1 = and i32 %not2, %b
+ %and1 = and i32 %b, %a
%and2 = and i32 %and1, %c
- %or3 = or i32 %and2, %not1
- call void @use(i32 %and2)
- ret i32 %or3
+ %not1 = xor i32 %and2, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and3 = and i32 %or2, %not1
+ call void @use(i32 %or2)
+ ret i32 %and3
}
; (~a & b & c) | ~(a | b) -> (c | ~b) & ~a
@@ -2976,6 +3556,289 @@ define i32 @not_and_and_or_no_or_use8(i32 %a, i32 %b, i32 %c) {
ret i32 %or2
}
+; (~a | b | c) & ~(a & b) -> (c & ~b) | ~a
+
+define i32 @not_or_or_and_no_and(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_commute1_or(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_commute1_or(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[C:%.*]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[NOT2]]
+; CHECK-NEXT: [[AND2:%.*]] = xor i32 [[AND1]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %c, %b
+ %or2 = or i32 %or1, %not2
+ %and2 = and i32 %or2, %not1
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_commute2_or(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_commute2_or(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[C:%.*]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[B]]
+; CHECK-NEXT: [[AND2:%.*]] = xor i32 [[AND1]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %c
+ %or2 = or i32 %or1, %b
+ %and2 = and i32 %or2, %not1
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_commute1(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_commute1(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %a, %b
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_commute2(i32 %a, i32 %b0, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_commute2(
+; CHECK-NEXT: [[B:%.*]] = sdiv i32 42, [[B0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[B]], [[NOT2]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %b = sdiv i32 42, %b0 ; thwart complexity-based canonicalization
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %b, %not2
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_commute3(i32 %a, i32 %b, i32 %c0) {
+; CHECK-LABEL: @not_or_or_and_no_and_commute3(
+; CHECK-NEXT: [[C:%.*]] = sdiv i32 42, [[C0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[C]], [[OR1]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %c = sdiv i32 42, %c0 ; thwart complexity-based canonicalization
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %c, %or1
+ %and2 = and i32 %or2, %not1
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use1(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use1(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: call void @use(i32 [[NOT2]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %not2)
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use2(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use2(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[B]], [[C:%.*]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[NOT2]]
+; CHECK-NEXT: [[AND2:%.*]] = xor i32 [[AND1]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[NOT2]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %b, %c
+ %or2 = or i32 %or1, %not2
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %not2)
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use3(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use3(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[C:%.*]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[B]]
+; CHECK-NEXT: [[AND2:%.*]] = xor i32 [[AND1]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[NOT2]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %c
+ %or2 = or i32 %or1, %b
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %not2)
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use4(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use4(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[C:%.*]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[B]]
+; CHECK-NEXT: [[AND2:%.*]] = xor i32 [[AND1]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[NOT2]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %c
+ %or2 = or i32 %or1, %b
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %not2)
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use5(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use5(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: call void @use(i32 [[AND1]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %and1)
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use6(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use6(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: call void @use(i32 [[NOT1]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %not1)
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use7(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use7(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: call void @use(i32 [[OR1]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %or1)
+ ret i32 %and2
+}
+
+define i32 @not_or_or_and_no_and_use8(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: @not_or_or_and_no_and_use8(
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[B:%.*]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND1]], -1
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[A]], -1
+; CHECK-NEXT: [[OR1:%.*]] = or i32 [[NOT2]], [[B]]
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[OR1]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[OR2]], [[NOT1]]
+; CHECK-NEXT: call void @use(i32 [[OR2]])
+; CHECK-NEXT: ret i32 [[AND2]]
+;
+ %and1 = and i32 %b, %a
+ %not1 = xor i32 %and1, -1
+ %not2 = xor i32 %a, -1
+ %or1 = or i32 %not2, %b
+ %or2 = or i32 %or1, %c
+ %and2 = and i32 %or2, %not1
+ call void @use(i32 %or2)
+ ret i32 %and2
+}
+
; (~(a | b) & c) | ~(a | (b | c)) -> ~(a | b)
; (~(a | b) & c) | ~(b | (a | c)) -> ~(a | b)
@@ -3156,3 +4019,178 @@ define i32 @not_or_and_or_not_or_or_use2(i32 %a, i32 %b, i32 %c) {
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:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[A:%.*]]
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[B]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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 [[A:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[B:%.*]]
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[B]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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 [[C:%.*]], [[B:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[A:%.*]]
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[B]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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 [[B:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[A]], [[AND1]]
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[A]], [[B]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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 [[A:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[B]], [[AND1]]
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[B]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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: [[C:%.*]] = sdiv i32 42, [[C0:%.*]]
+; CHECK-NEXT: [[AND1:%.*]] = and i32 [[C]], [[A:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[B:%.*]]
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[B]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[C]], [[NOT2]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[A:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND2]], -1
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[B]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[NOT1]])
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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 [[A:%.*]], [[C:%.*]]
+; CHECK-NEXT: [[AND2:%.*]] = and i32 [[AND1]], [[B:%.*]]
+; CHECK-NEXT: [[NOT1:%.*]] = xor i32 [[AND2]], -1
+; CHECK-NEXT: [[AND3:%.*]] = and i32 [[B]], [[A]]
+; CHECK-NEXT: [[NOT2:%.*]] = xor i32 [[AND3]], -1
+; CHECK-NEXT: [[OR2:%.*]] = or i32 [[NOT2]], [[C]]
+; CHECK-NEXT: [[AND4:%.*]] = xor i32 [[AND2]], [[OR2]]
+; CHECK-NEXT: call void @use(i32 [[NOT1]])
+; CHECK-NEXT: ret i32 [[AND4]]
+;
+ %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
+}
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