1 ; This test makes sure that xor instructions are properly eliminated. 2 ; This test is for Integer BitWidth > 64 && BitWidth <= 1024. 3 4 ; RUN: opt < %s -instcombine -S | not grep "xor " 5 ; END. 6 7 8 define i447 @test1(i447 %A, i447 %B) { 9 ;; (A & C1)^(B & C2) -> (A & C1)|(B & C2) iff C1&C2 == 0 10 %A1 = and i447 %A, 70368744177664 11 %B1 = and i447 %B, 70368744177663 12 %C1 = xor i447 %A1, %B1 13 ret i447 %C1 14 } 15 16 define i1005 @test2(i1005 %x) { 17 %tmp.2 = xor i1005 %x, 0 18 ret i1005 %tmp.2 19 } 20 21 define i123 @test3(i123 %x) { 22 %tmp.2 = xor i123 %x, %x 23 ret i123 %tmp.2 24 } 25 26 define i737 @test4(i737 %x) { 27 ; x ^ ~x == -1 28 %NotX = xor i737 -1, %x 29 %B = xor i737 %x, %NotX 30 ret i737 %B 31 } 32 33 define i700 @test5(i700 %A) { 34 ;; (A|B)^B == A & (~B) 35 %t1 = or i700 %A, 288230376151711743 36 %r = xor i700 %t1, 288230376151711743 37 ret i700 %r 38 } 39 40 define i77 @test6(i77 %A) { 41 %t1 = xor i77 %A, 23 42 %r = xor i77 %t1, 23 43 ret i77 %r 44 } 45 46 define i1023 @test7(i1023 %A) { 47 ;; (A | C1) ^ C2 -> (A | C1) & ~C2 iff (C1&C2) == C2 48 %B1 = or i1023 %A, 70368744177663 49 %C1 = xor i1023 %B1, 703687463 50 ret i1023 %C1 51 } 52
