1 ; This test makes sure that and instructions are properly eliminated. 2 ; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0. 3 4 ; RUN: opt < %s -instcombine -S | not grep "and " 5 ; END. 6 7 define i39 @test0(i39 %A) { 8 %B = and i39 %A, 0 ; zero result 9 ret i39 %B 10 } 11 12 define i47 @test1(i47 %A, i47 %B) { 13 ;; (~A & ~B) == (~(A | B)) - De Morgan's Law 14 %NotA = xor i47 %A, -1 15 %NotB = xor i47 %B, -1 16 %C1 = and i47 %NotA, %NotB 17 ret i47 %C1 18 } 19 20 define i15 @test2(i15 %x) { 21 %tmp.2 = and i15 %x, -1 ; noop 22 ret i15 %tmp.2 23 } 24 25 define i23 @test3(i23 %x) { 26 %tmp.0 = and i23 %x, 127 27 %tmp.2 = and i23 %tmp.0, 128 28 ret i23 %tmp.2 29 } 30 31 define i1 @test4(i37 %x) { 32 %A = and i37 %x, -2147483648 33 %B = icmp ne i37 %A, 0 34 ret i1 %B 35 } 36 37 define i7 @test5(i7 %A, i7* %P) { 38 %B = or i7 %A, 3 39 %C = xor i7 %B, 12 40 store i7 %C, i7* %P 41 %r = and i7 %C, 3 42 ret i7 %r 43 } 44 45 define i7 @test6(i7 %A, i7 %B) { 46 ;; ~(~X & Y) --> (X | ~Y) 47 %t0 = xor i7 %A, -1 48 %t1 = and i7 %t0, %B 49 %r = xor i7 %t1, -1 50 ret i7 %r 51 } 52 53 define i47 @test7(i47 %A) { 54 %X = ashr i47 %A, 39 ;; sign extend 55 %C1 = and i47 %X, 255 56 ret i47 %C1 57 } 58
