1 ; This test makes sure that or instructions are properly eliminated. 2 ; This test is for Integer BitWidth > 64 && BitWidth <= 1024. 3 ; 4 ; RUN: opt < %s -instcombine -S | not grep or 5 6 7 define i777 @test0(i777 %X) { 8 %Y = or i777 %X, 0 9 ret i777 %Y 10 } 11 12 define i117 @test1(i117 %X) { 13 %Y = or i117 %X, -1 14 ret i117 %Y 15 } 16 17 define i1023 @test2(i1023 %A) { 18 ;; A | ~A == -1 19 %NotA = xor i1023 -1, %A 20 %B = or i1023 %A, %NotA 21 ret i1023 %B 22 } 23 24 define i399 @test3(i399 %V, i399 %M) { 25 ;; If we have: ((V + N) & C1) | (V & C2) 26 ;; .. and C2 = ~C1 and C2 is 0+1+ and (N & C2) == 0 27 ;; replace with V+N. 28 %C1 = xor i399 274877906943, -1 ;; C2 = 274877906943 29 %N = and i399 %M, 18446742974197923840 30 %A = add i399 %V, %N 31 %B = and i399 %A, %C1 32 %D = and i399 %V, 274877906943 33 %R = or i399 %B, %D 34 ret i399 %R 35 } 36
