; This test makes sure that or instructions are properly eliminated. ; This test is for Integer BitWidth <= 64 && BitWidth % 2 != 0. ; ; RUN: opt %s -instcombine | llvm-dis | not grep or define i7 @test0(i7 %X) { %Y = or i7 %X, 0 ret i7 %Y } define i17 @test1(i17 %X) { %Y = or i17 %X, -1 ret i17 %Y } define i23 @test2(i23 %A) { ;; A | ~A == -1 %NotA = xor i23 -1, %A %B = or i23 %A, %NotA ret i23 %B } define i39 @test3(i39 %V, i39 %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 i39 274877906943, -1 ;; C2 = 274877906943 %N = and i39 %M, 274877906944 %A = add i39 %V, %N %B = and i39 %A, %C1 %D = and i39 %V, 274877906943 %R = or i39 %B, %D ret i39 %R }