blob: 01cbcf158cd9860de2f04c91c5a805108c28b3db [file] [log] [blame]
 ; This test makes sure that xor instructions are properly eliminated. ; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0. ; RUN: opt < %s -instcombine -S | not grep "xor " define i47 @test1(i47 %A, i47 %B) { ;; (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0 %A1 = and i47 %A, 70368744177664 %B1 = and i47 %B, 70368744177661 %C1 = xor i47 %A1, %B1 ret i47 %C1 } define i15 @test2(i15 %x) { %tmp.2 = xor i15 %x, 0 ret i15 %tmp.2 } define i23 @test3(i23 %x) { %tmp.2 = xor i23 %x, %x ret i23 %tmp.2 } define i37 @test4(i37 %x) { ; x ^ ~x == -1 %NotX = xor i37 -1, %x %B = xor i37 %x, %NotX ret i37 %B } define i7 @test5(i7 %A) { ;; (A|B)^B == A & (~B) %t1 = or i7 %A, 23 %r = xor i7 %t1, 23 ret i7 %r } define i7 @test6(i7 %A) { %t1 = xor i7 %A, 23 %r = xor i7 %t1, 23 ret i7 %r } define i47 @test7(i47 %A) { ;; (A | C1) ^ C2 -> (A | C1) & ~C2 iff (C1&C2) == C2 %B1 = or i47 %A, 70368744177663 %C1 = xor i47 %B1, 703687463 ret i47 %C1 }