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; This test makes sure that these instructions are properly eliminated.
;
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep xor
implementation
int %test1(int %A) {
%B = xor int %A, -1
%C = xor int %B, -1
ret int %C
}
bool %test2(int %A, int %B) {
%cond = setle int %A, %B ; Can change into setge
%Ret = xor bool %cond, true
ret bool %Ret
}
; Test that demorgans law can be instcombined
int %test3(int %A, int %B) {
%a = xor int %A, -1
%b = xor int %B, -1
%c = and int %a, %b
%d = xor int %c, -1
ret int %d
}
; Test that demorgens law can work with constants
int %test4(int %A, int %B) {
%a = xor int %A, -1
%c = and int %a, 5 ; 5 = ~c2
%d = xor int %c, -1
ret int %d
}
; test the mirror of demorgans law...
int %test5(int %A, int %B) {
%a = xor int %A, -1
%b = xor int %B, -1
%c = or int %a, %b
%d = xor int %c, -1
ret int %d
}
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