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; This test makes sure that add instructions are properly eliminated.
;
; This also tests that a subtract with a constant is properly converted
; to a add w/negative constant
; RUN: if as < %s | opt -instcombine -die | dis | grep add
; RUN: then exit 1
; RUN: else exit 0
; RUN: fi
implementation
int "test1"(int %A)
begin
%B = add int %A, 0
ret int %B
end
int "test2"(int %A)
begin
%B = add int %A, 5
%C = add int %B, -5
ret int %C
end
int "test3"(int %A)
begin
%B = add int %A, 5
%C = sub int %B, 5 ;; This should get converted to an add
ret int %C
end
int "test4"(int %A, int %B) {
%C = sub int 0, %A
%D = add int %B, %C ; D = B + -A = B - A
ret int %D
}
int "test5"(int %A, int %B) {
%C = sub int 0, %A
%D = add int %C, %B ; D = -A + B = B - A
ret int %D
}
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