; This test makes sure that or instructions are properly eliminated. ; This test is for Integer BitWidth > 64 && BitWidth <= 1024. ; ; RUN: opt < %s -instcombine -S | not grep or define i777 @test0(i777 %X) { %Y = or i777 %X, 0 ret i777 %Y } define i117 @test1(i117 %X) { %Y = or i117 %X, -1 ret i117 %Y } define i1023 @test2(i1023 %A) { ;; A | ~A == -1 %NotA = xor i1023 -1, %A %B = or i1023 %A, %NotA ret i1023 %B } define i399 @test3(i399 %V, i399 %M) { ;; If we have: ((V + N) & C1) | (V & C2) ;; .. and C2 = ~C1 and C2 is 0+1+ and (N & C2) == 0 ;; replace with V+N. %C1 = xor i399 274877906943, -1 ;; C2 = 274877906943 %N = and i399 %M, 18446742974197923840 %A = add i399 %V, %N %B = and i399 %A, %C1 %D = and i399 %V, 274877906943 %R = or i399 %B, %D ret i399 %R }