; RUN: opt < %s -instcombine -S | FileCheck %s ; These tests are for Integer BitWidth <= 64 && BitWidth % 2 != 0. define i23 @test1(i23 %A) { ;; A | ~A == -1 %NotA = xor i23 -1, %A %B = or i23 %A, %NotA ret i23 %B ; CHECK-LABEL: @test1 ; CHECK-NEXT: ret i23 -1 } define i39 @test2(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 ; CHECK-LABEL: @test2 ; CHECK-NEXT: %N = and i39 %M, -274877906944 ; CHECK-NEXT: %A = add i39 %N, %V ; CHECK-NEXT: ret i39 %A } define i43 @test3(i43 %A, i43 %B) { ;; (~A | ~B) == (~(A & B)) - De Morgan's Law %NotA = xor i43 %A, -1 %NotB = xor i43 %B, -1 %C1 = or i43 %NotA, %NotB ret i43 %C1 ; CHECK-LABEL: @test3 ; CHECK-NEXT: %C1.demorgan = and i43 %A, %B ; CHECK-NEXT: %C1 = xor i43 %C1.demorgan, -1 ; CHECK-NEXT: ret i43 %C1 } ; These tests are for Integer BitWidth > 64 && BitWidth <= 1024. define i1023 @test4(i1023 %A) { ;; A | ~A == -1 %NotA = xor i1023 -1, %A %B = or i1023 %A, %NotA ret i1023 %B ; CHECK-LABEL: @test4 ; CHECK-NEXT: ret i1023 -1 } define i399 @test5(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 ; CHECK-LABEL: @test5 ; CHECK-NEXT: %N = and i399 %M, 18446742974197923840 ; CHECK-NEXT: %A = add i399 %N, %V ; CHECK-NEXT: ret i399 %A } define i129 @test6(i129 %A, i129 %B) { ;; (~A | ~B) == (~(A & B)) - De Morgan's Law %NotA = xor i129 %A, -1 %NotB = xor i129 %B, -1 %C1 = or i129 %NotA, %NotB ret i129 %C1 ; CHECK-LABEL: @test6 ; CHECK-NEXT: %C1.demorgan = and i129 %A, %B ; CHECK-NEXT: %C1 = xor i129 %C1.demorgan, -1 ; CHECK-NEXT: ret i129 %C1 }