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; This test makes sure that the xor instructions are properly eliminated
; when arbitrary precision integers are used.
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep xor
define i33 @test1(i33 %A) {
%B = xor i33 %A, -1
%C = xor i33 %B, -1
ret i33 %C
}
define i1 @test2(i52 %A, i52 %B) {
%cond = icmp ule i52 %A, %B ; Can change into uge
%Ret = xor i1 %cond, true
ret i1 %Ret
}
; Test that demorgans law can be instcombined
define i47 @test3(i47 %A, i47 %B) {
%a = xor i47 %A, -1
%b = xor i47 %B, -1
%c = and i47 %a, %b
%d = xor i47 %c, -1
ret i47 %d
}
; Test that demorgens law can work with constants
define i61 @test4(i61 %A, i61 %B) {
%a = xor i61 %A, -1
%c = and i61 %a, 5 ; 5 = ~c2
%d = xor i61 %c, -1
ret i61 %d
}
; test the mirror of demorgans law...
define i71 @test5(i71 %A, i71 %B) {
%a = xor i71 %A, -1
%b = xor i71 %B, -1
%c = or i71 %a, %b
%d = xor i71 %c, -1
ret i71 %d
}
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