| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -instcombine < %s | FileCheck %s |
| |
| ; X | ~(X | Y) --> X | ~Y |
| |
| define i32 @test1(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: [[Y_NOT:%.*]] = xor i32 [[Y:%.*]], -1 |
| ; CHECK-NEXT: [[Z:%.*]] = or i32 [[Y_NOT]], [[X:%.*]] |
| ; CHECK-NEXT: ret i32 [[Z]] |
| ; |
| %or = or i32 %x, %y |
| %not = xor i32 %or, -1 |
| %z = or i32 %x, %not |
| ret i32 %z |
| } |
| |
| ; Commute (rename) the inner 'or' operands: |
| ; Y | ~(X | Y) --> ~X | Y |
| |
| define i32 @test2(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: [[X_NOT:%.*]] = xor i32 [[X:%.*]], -1 |
| ; CHECK-NEXT: [[Z:%.*]] = or i32 [[X_NOT]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[Z]] |
| ; |
| %or = or i32 %x, %y |
| %not = xor i32 %or, -1 |
| %z = or i32 %y, %not |
| ret i32 %z |
| } |
| |
| ; X | ~(X ^ Y) --> X | ~Y |
| |
| define i32 @test3(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: [[Y_NOT:%.*]] = xor i32 [[Y:%.*]], -1 |
| ; CHECK-NEXT: [[Z:%.*]] = or i32 [[Y_NOT]], [[X:%.*]] |
| ; CHECK-NEXT: ret i32 [[Z]] |
| ; |
| %xor = xor i32 %x, %y |
| %not = xor i32 %xor, -1 |
| %z = or i32 %x, %not |
| ret i32 %z |
| } |
| |
| ; Commute (rename) the 'xor' operands: |
| ; Y | ~(X ^ Y) --> ~X | Y |
| |
| define i32 @test4(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: [[X_NOT:%.*]] = xor i32 [[X:%.*]], -1 |
| ; CHECK-NEXT: [[Z:%.*]] = or i32 [[X_NOT]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[Z]] |
| ; |
| %xor = xor i32 %x, %y |
| %not = xor i32 %xor, -1 |
| %z = or i32 %y, %not |
| ret i32 %z |
| } |
| |
| define i32 @test7(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: [[Z:%.*]] = or i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[Z]] |
| ; |
| %xor = xor i32 %x, %y |
| %z = or i32 %y, %xor |
| ret i32 %z |
| } |
| |
| define i32 @test8(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: [[X_NOT:%.*]] = xor i32 [[X:%.*]], -1 |
| ; CHECK-NEXT: [[Z:%.*]] = or i32 [[X_NOT]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[Z]] |
| ; |
| %not = xor i32 %y, -1 |
| %xor = xor i32 %x, %not |
| %z = or i32 %y, %xor |
| ret i32 %z |
| } |
| |
| define i32 @test9(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test9( |
| ; CHECK-NEXT: [[Y_NOT:%.*]] = xor i32 [[Y:%.*]], -1 |
| ; CHECK-NEXT: [[Z:%.*]] = or i32 [[Y_NOT]], [[X:%.*]] |
| ; CHECK-NEXT: ret i32 [[Z]] |
| ; |
| %not = xor i32 %x, -1 |
| %xor = xor i32 %not, %y |
| %z = or i32 %x, %xor |
| ret i32 %z |
| } |
| |
| ; (A ^ B) | (~A ^ B) --> -1 |
| |
| define i32 @test10(i32 %A, i32 %B) { |
| ; CHECK-LABEL: @test10( |
| ; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B:%.*]], [[A:%.*]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[A]], [[B]] |
| ; CHECK-NEXT: [[XOR2:%.*]] = xor i32 [[TMP1]], -1 |
| ; CHECK-NEXT: [[OR:%.*]] = or i32 [[XOR1]], [[XOR2]] |
| ; CHECK-NEXT: ret i32 [[OR]] |
| ; |
| %xor1 = xor i32 %B, %A |
| %not = xor i32 %A, -1 |
| %xor2 = xor i32 %not, %B |
| %or = or i32 %xor1, %xor2 |
| ret i32 %or |
| } |
| |
| define i32 @test10_commuted(i32 %A, i32 %B) { |
| ; CHECK-LABEL: @test10_commuted( |
| ; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B:%.*]], [[A:%.*]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[A]], [[B]] |
| ; CHECK-NEXT: [[XOR2:%.*]] = xor i32 [[TMP1]], -1 |
| ; CHECK-NEXT: [[OR:%.*]] = or i32 [[XOR1]], [[XOR2]] |
| ; CHECK-NEXT: ret i32 [[OR]] |
| ; |
| %xor1 = xor i32 %B, %A |
| %not = xor i32 %A, -1 |
| %xor2 = xor i32 %not, %B |
| %or = or i32 %xor2, %xor1 |
| ret i32 %or |
| } |
| |
| define i32 @test10_extrause(i32 %A, i32 %B, i32* %dst) { |
| ; CHECK-LABEL: @test10_extrause( |
| ; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1 |
| ; CHECK-NEXT: store i32 [[NOT]], i32* [[DST:%.*]], align 4 |
| ; CHECK-NEXT: ret i32 -1 |
| ; |
| %xor1 = xor i32 %B, %A |
| %not = xor i32 %A, -1 |
| store i32 %not, i32* %dst |
| %xor2 = xor i32 %not, %B |
| %or = or i32 %xor1, %xor2 |
| ret i32 %or |
| } |
| |
| define i32 @test10_commuted_extrause(i32 %A, i32 %B, i32* %dst) { |
| ; CHECK-LABEL: @test10_commuted_extrause( |
| ; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1 |
| ; CHECK-NEXT: store i32 [[NOT]], i32* [[DST:%.*]], align 4 |
| ; CHECK-NEXT: ret i32 -1 |
| ; |
| %xor1 = xor i32 %B, %A |
| %not = xor i32 %A, -1 |
| store i32 %not, i32* %dst |
| %xor2 = xor i32 %not, %B |
| %or = or i32 %xor2, %xor1 |
| ret i32 %or |
| } |
| |
| ; (A ^ B) | ~(A ^ B) --> -1 |
| define i32 @test10_canonical(i32 %A, i32 %B) { |
| ; CHECK-LABEL: @test10_canonical( |
| ; CHECK-NEXT: [[XOR1:%.*]] = xor i32 [[B:%.*]], [[A:%.*]] |
| ; CHECK-NEXT: [[XOR2:%.*]] = xor i32 [[A]], [[B]] |
| ; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[XOR2]], -1 |
| ; CHECK-NEXT: [[OR:%.*]] = or i32 [[XOR1]], [[NOT]] |
| ; CHECK-NEXT: ret i32 [[OR]] |
| ; |
| %xor1 = xor i32 %B, %A |
| %xor2 = xor i32 %A, %B |
| %not = xor i32 %xor2, -1 |
| %or = or i32 %xor1, %not |
| ret i32 %or |
| } |
| |
| ; (x | y) & ((~x) ^ y) -> (x & y) |
| define i32 @test11(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test11( |
| ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[AND]] |
| ; |
| %or = or i32 %x, %y |
| %neg = xor i32 %x, -1 |
| %xor = xor i32 %neg, %y |
| %and = and i32 %or, %xor |
| ret i32 %and |
| } |
| |
| ; ((~x) ^ y) & (x | y) -> (x & y) |
| define i32 @test12(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test12( |
| ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[AND]] |
| ; |
| %neg = xor i32 %x, -1 |
| %xor = xor i32 %neg, %y |
| %or = or i32 %x, %y |
| %and = and i32 %xor, %or |
| ret i32 %and |
| } |
| |
| define i32 @test12_commuted(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test12_commuted( |
| ; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[AND]] |
| ; |
| %neg = xor i32 %x, -1 |
| %xor = xor i32 %neg, %y |
| %or = or i32 %y, %x |
| %and = and i32 %xor, %or |
| ret i32 %and |
| } |
| |
| ; ((x | y) ^ (x ^ y)) -> (x & y) |
| define i32 @test13(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test13( |
| ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[Y:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: ret i32 [[TMP1]] |
| ; |
| %1 = xor i32 %y, %x |
| %2 = or i32 %y, %x |
| %3 = xor i32 %2, %1 |
| ret i32 %3 |
| } |
| |
| ; ((x | ~y) ^ (~x | y)) -> x ^ y |
| define i32 @test14(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test14( |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %or1 = or i32 %x, %noty |
| %or2 = or i32 %notx, %y |
| %xor = xor i32 %or1, %or2 |
| ret i32 %xor |
| } |
| |
| define i32 @test14_commuted(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test14_commuted( |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %or1 = or i32 %noty, %x |
| %or2 = or i32 %notx, %y |
| %xor = xor i32 %or1, %or2 |
| ret i32 %xor |
| } |
| |
| ; ((x & ~y) ^ (~x & y)) -> x ^ y |
| define i32 @test15(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test15( |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %and1 = and i32 %x, %noty |
| %and2 = and i32 %notx, %y |
| %xor = xor i32 %and1, %and2 |
| ret i32 %xor |
| } |
| |
| define i32 @test15_commuted(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test15_commuted( |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %and1 = and i32 %noty, %x |
| %and2 = and i32 %notx, %y |
| %xor = xor i32 %and1, %and2 |
| ret i32 %xor |
| } |
| |
| define i32 @test16(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @test16( |
| ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A:%.*]], 1 |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[TMP1]], [[B:%.*]] |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %or = xor i32 %a, %b |
| %and1 = and i32 %or, 1 |
| %and2 = and i32 %b, -2 |
| %xor = or i32 %and1, %and2 |
| ret i32 %xor |
| } |
| |
| define i8 @not_or(i8 %x) { |
| ; CHECK-LABEL: @not_or( |
| ; CHECK-NEXT: [[NOTX:%.*]] = xor i8 [[X:%.*]], -1 |
| ; CHECK-NEXT: [[OR:%.*]] = or i8 [[NOTX]], 7 |
| ; CHECK-NEXT: ret i8 [[OR]] |
| ; |
| %notx = xor i8 %x, -1 |
| %or = or i8 %notx, 7 |
| ret i8 %or |
| } |
| |
| define i8 @not_or_xor(i8 %x) { |
| ; CHECK-LABEL: @not_or_xor( |
| ; CHECK-NEXT: [[TMP1:%.*]] = and i8 [[X:%.*]], -8 |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i8 [[TMP1]], -13 |
| ; CHECK-NEXT: ret i8 [[XOR]] |
| ; |
| %notx = xor i8 %x, -1 |
| %or = or i8 %notx, 7 |
| %xor = xor i8 %or, 12 |
| ret i8 %xor |
| } |
| |
| define i8 @xor_or(i8 %x) { |
| ; CHECK-LABEL: @xor_or( |
| ; CHECK-NEXT: [[TMP1:%.*]] = or i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[OR:%.*]] = xor i8 [[TMP1]], 32 |
| ; CHECK-NEXT: ret i8 [[OR]] |
| ; |
| %xor = xor i8 %x, 32 |
| %or = or i8 %xor, 7 |
| ret i8 %or |
| } |
| |
| define i8 @xor_or2(i8 %x) { |
| ; CHECK-LABEL: @xor_or2( |
| ; CHECK-NEXT: [[TMP1:%.*]] = or i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[OR:%.*]] = xor i8 [[TMP1]], 32 |
| ; CHECK-NEXT: ret i8 [[OR]] |
| ; |
| %xor = xor i8 %x, 33 |
| %or = or i8 %xor, 7 |
| ret i8 %or |
| } |
| |
| define i8 @xor_or_xor(i8 %x) { |
| ; CHECK-LABEL: @xor_or_xor( |
| ; CHECK-NEXT: [[TMP1:%.*]] = or i8 [[X:%.*]], 7 |
| ; CHECK-NEXT: [[XOR2:%.*]] = xor i8 [[TMP1]], 44 |
| ; CHECK-NEXT: ret i8 [[XOR2]] |
| ; |
| %xor1 = xor i8 %x, 33 |
| %or = or i8 %xor1, 7 |
| %xor2 = xor i8 %or, 12 |
| ret i8 %xor2 |
| } |
| |
| define i8 @or_xor_or(i8 %x) { |
| ; CHECK-LABEL: @or_xor_or( |
| ; CHECK-NEXT: [[TMP1:%.*]] = or i8 [[X:%.*]], 39 |
| ; CHECK-NEXT: [[OR2:%.*]] = xor i8 [[TMP1]], 8 |
| ; CHECK-NEXT: ret i8 [[OR2]] |
| ; |
| %or1 = or i8 %x, 33 |
| %xor = xor i8 %or1, 12 |
| %or2 = or i8 %xor, 7 |
| ret i8 %or2 |
| } |
| |
| define i8 @test17(i8 %A, i8 %B) { |
| ; CHECK-LABEL: @test17( |
| ; CHECK-NEXT: [[XOR1:%.*]] = xor i8 [[B:%.*]], [[A:%.*]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[A]], [[B]] |
| ; CHECK-NEXT: [[XOR2:%.*]] = xor i8 [[TMP1]], 33 |
| ; CHECK-NEXT: [[OR:%.*]] = or i8 [[XOR1]], [[XOR2]] |
| ; CHECK-NEXT: [[RES:%.*]] = mul i8 [[OR]], [[XOR2]] |
| ; CHECK-NEXT: ret i8 [[RES]] |
| ; |
| %xor1 = xor i8 %B, %A |
| %not = xor i8 %A, 33 |
| %xor2 = xor i8 %not, %B |
| %or = or i8 %xor1, %xor2 |
| %res = mul i8 %or, %xor2 ; to increase the use count for the xor |
| ret i8 %res |
| } |
| |
| define i8 @test18(i8 %A, i8 %B) { |
| ; CHECK-LABEL: @test18( |
| ; CHECK-NEXT: [[XOR1:%.*]] = xor i8 [[B:%.*]], [[A:%.*]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[A]], [[B]] |
| ; CHECK-NEXT: [[XOR2:%.*]] = xor i8 [[TMP1]], 33 |
| ; CHECK-NEXT: [[OR:%.*]] = or i8 [[XOR2]], [[XOR1]] |
| ; CHECK-NEXT: [[RES:%.*]] = mul i8 [[OR]], [[XOR2]] |
| ; CHECK-NEXT: ret i8 [[RES]] |
| ; |
| %xor1 = xor i8 %B, %A |
| %not = xor i8 %A, 33 |
| %xor2 = xor i8 %not, %B |
| %or = or i8 %xor2, %xor1 |
| %res = mul i8 %or, %xor2 ; to increase the use count for the xor |
| ret i8 %res |
| } |
| |
| ; ((x | y) ^ (~x | ~y)) -> ~(x ^ y) |
| define i32 @test19(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test19( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[TMP1]], -1 |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %or1 = or i32 %x, %y |
| %or2 = or i32 %notx, %noty |
| %xor = xor i32 %or1, %or2 |
| ret i32 %xor |
| } |
| |
| ; ((x | y) ^ (~y | ~x)) -> ~(x ^ y) |
| define i32 @test20(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test20( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[TMP1]], -1 |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %or1 = or i32 %x, %y |
| %or2 = or i32 %noty, %notx |
| %xor = xor i32 %or1, %or2 |
| ret i32 %xor |
| } |
| |
| ; ((~x | ~y) ^ (x | y)) -> ~(x ^ y) |
| define i32 @test21(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test21( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[TMP1]], -1 |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %or1 = or i32 %notx, %noty |
| %or2 = or i32 %x, %y |
| %xor = xor i32 %or1, %or2 |
| ret i32 %xor |
| } |
| |
| ; ((~x | ~y) ^ (y | x)) -> ~(x ^ y) |
| define i32 @test22(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test22( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[Y:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[TMP1]], -1 |
| ; CHECK-NEXT: ret i32 [[XOR]] |
| ; |
| %noty = xor i32 %y, -1 |
| %notx = xor i32 %x, -1 |
| %or1 = or i32 %notx, %noty |
| %or2 = or i32 %y, %x |
| %xor = xor i32 %or1, %or2 |
| ret i32 %xor |
| } |
| |
| ; (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2) |
| define i8 @test23(i8 %A) { |
| ; CHECK-LABEL: @test23( |
| ; CHECK-NEXT: ret i8 -1 |
| ; |
| %B = or i8 %A, -2 |
| %C = xor i8 %B, 13 |
| %D = or i8 %C, 1 |
| %E = xor i8 %D, 12 |
| ret i8 %E |
| } |
| |
| define i8 @test23v(<2 x i8> %A) { |
| ; CHECK-LABEL: @test23v( |
| ; CHECK-NEXT: ret i8 -1 |
| ; |
| %B = or <2 x i8> %A, <i8 -2, i8 0> |
| %CV = xor <2 x i8> %B, <i8 13, i8 13> |
| %C = extractelement <2 x i8> %CV, i32 0 |
| %D = or i8 %C, 1 |
| %E = xor i8 %D, 12 |
| ret i8 %E |
| } |
| |
| ; ~(a | b) | (~a & b); |
| define i32 @PR45977_f1(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @PR45977_f1( |
| ; CHECK-NEXT: [[NOT:%.*]] = xor i32 [[A:%.*]], -1 |
| ; CHECK-NEXT: ret i32 [[NOT]] |
| ; |
| %not = xor i32 %a, -1 |
| %andnot = and i32 %not, %b |
| %or = or i32 %a, %b |
| %notor = xor i32 %or, -1 |
| %res = or i32 %notor, %andnot |
| ret i32 %res |
| } |
| |
| ; (a | b) ^ (a | ~b) |
| define i32 @PR45977_f2(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @PR45977_f2( |
| ; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[A:%.*]], -1 |
| ; CHECK-NEXT: ret i32 [[TMP1]] |
| ; |
| %or = or i32 %a, %b |
| %not = xor i32 %b, -1 |
| %ornot = or i32 %a, %not |
| %res = xor i32 %or, %ornot |
| ret i32 %res |
| } |