mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 00:11:00 +00:00
e78760e179
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8558 91177308-0d34-0410-b5e6-96231b3b80d8
116 lines
2.1 KiB
LLVM
116 lines
2.1 KiB
LLVM
; This test makes sure that these instructions are properly eliminated.
|
|
;
|
|
|
|
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep -v xor | not grep 'or '
|
|
|
|
implementation
|
|
|
|
int %test1(int %A) {
|
|
%B = or int %A, 0
|
|
ret int %B
|
|
}
|
|
|
|
int %test2(int %A) {
|
|
%B = or int %A, -1
|
|
ret int %B
|
|
}
|
|
|
|
ubyte %test2a(ubyte %A) {
|
|
%B = or ubyte %A, 255
|
|
ret ubyte %B
|
|
}
|
|
|
|
bool %test3(bool %A) {
|
|
%B = or bool %A, false
|
|
ret bool %B
|
|
}
|
|
|
|
bool %test4(bool %A) {
|
|
%B = or bool %A, true
|
|
ret bool %B
|
|
}
|
|
|
|
bool %test5(bool %A) {
|
|
%B = or bool %A, %A
|
|
ret bool %B
|
|
}
|
|
|
|
int %test6(int %A) {
|
|
%B = or int %A, %A
|
|
ret int %B
|
|
}
|
|
|
|
int %test7(int %A) { ; A | ~A == -1
|
|
%NotA = xor int -1, %A
|
|
%B = or int %A, %NotA
|
|
ret int %B
|
|
}
|
|
|
|
ubyte %test8(ubyte %A) {
|
|
%B = or ubyte %A, 254
|
|
%C = or ubyte %B, 1
|
|
ret ubyte %C
|
|
}
|
|
|
|
ubyte %test9(ubyte %A, ubyte %B) { ; Test that (A|c1)|(B|c2) == (A|B)|(c1|c2)
|
|
%C = or ubyte %A, 1
|
|
%D = or ubyte %B, 254
|
|
%E = or ubyte %C, %D
|
|
ret ubyte %E
|
|
}
|
|
|
|
ubyte %test10(ubyte %A) {
|
|
%B = or ubyte %A, 1
|
|
%C = and ubyte %B, 254
|
|
%D = or ubyte %C, 254 ; (X & C1) | C2 --> (X | C2) & (C1|C2)
|
|
ret ubyte %D
|
|
}
|
|
|
|
ubyte %test11(ubyte %A) {
|
|
%B = or ubyte %A, 254
|
|
%C = xor ubyte %B, 13
|
|
%D = or ubyte %C, 1 ; (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)
|
|
%E = xor ubyte %D, 12
|
|
ret ubyte %E
|
|
}
|
|
|
|
uint %test12(uint %A) {
|
|
%B = or uint %A, 4 ; Should be eliminated
|
|
%C = and uint %B, 8
|
|
ret uint %C
|
|
}
|
|
|
|
uint %test13(uint %A) {
|
|
%B = or uint %A, 12
|
|
%C = and uint %B, 8 ; Always equal to 8
|
|
ret uint %C
|
|
}
|
|
|
|
bool %test14(uint %A, uint %B) {
|
|
%C1 = setlt uint %A, %B
|
|
%C2 = setgt uint %A, %B
|
|
%D = or bool %C1, %C2 ; (A < B) | (A > B) === A != B
|
|
ret bool %D
|
|
}
|
|
|
|
bool %test15(uint %A, uint %B) {
|
|
%C1 = setlt uint %A, %B
|
|
%C2 = seteq uint %A, %B
|
|
%D = or bool %C1, %C2 ; (A < B) | (A == B) === A <= B
|
|
ret bool %D
|
|
}
|
|
|
|
int %test16(int %A) {
|
|
%B = and int %A, 1
|
|
%C = and int %A, -2 ; -2 = ~1
|
|
%D = or int %B, %C ; %D = and int %B, -1 == %B
|
|
ret int %D
|
|
}
|
|
|
|
int %test17(int %A) {
|
|
%B = and int %A, 1
|
|
%C = and int %A, 4
|
|
%D = or int %B, %C ; %D = and int %B, 5
|
|
ret int %D
|
|
}
|