| ; This test makes sure that xor instructions are properly eliminated. |
| ; This test is for Integer BitWidth > 64 && BitWidth <= 1024. |
| |
| ; RUN: opt < %s -passes=instcombine -S | not grep "xor " |
| ; END. |
| |
| |
| define i447 @test1(i447 %A, i447 %B) { |
| ;; (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0 |
| %A1 = and i447 %A, 70368744177664 |
| %B1 = and i447 %B, 70368744177663 |
| %C1 = xor i447 %A1, %B1 |
| ret i447 %C1 |
| } |
| |
| define i1005 @test2(i1005 %x) { |
| %tmp.2 = xor i1005 %x, 0 |
| ret i1005 %tmp.2 |
| } |
| |
| define i123 @test3(i123 %x) { |
| %tmp.2 = xor i123 %x, %x |
| ret i123 %tmp.2 |
| } |
| |
| define i737 @test4(i737 %x) { |
| ; x ^ ~x == -1 |
| %NotX = xor i737 -1, %x |
| %B = xor i737 %x, %NotX |
| ret i737 %B |
| } |
| |
| define i700 @test5(i700 %A) { |
| ;; (A|B)^B == A & (~B) |
| %t1 = or i700 %A, 288230376151711743 |
| %r = xor i700 %t1, 288230376151711743 |
| ret i700 %r |
| } |
| |
| define i77 @test6(i77 %A) { |
| %t1 = xor i77 %A, 23 |
| %r = xor i77 %t1, 23 |
| ret i77 %r |
| } |
| |
| define i1023 @test7(i1023 %A) { |
| ;; (A | C1) ^ C2 -> (A | C1) & ~C2 iff (C1&C2) == C2 |
| %B1 = or i1023 %A, 70368744177663 |
| %C1 = xor i1023 %B1, 703687463 |
| ret i1023 %C1 |
| } |