llvm-6502/test/Transforms/InstCombine/not.ll

32 lines
582 B
LLVM
Raw Normal View History

; This test makes sure that these instructions are properly eliminated.
;
; RUN: if as < %s | opt -instcombine -die | dis | grep xor
; RUN: then exit 1
; RUN: else exit 0
; RUN: fi
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
}