2002-05-06 07:43:36 +02:00
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; This test makes sure that these instructions are properly eliminated.
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;
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2006-02-26 20:55:30 +01:00
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; RUN: llvm-as < %s | opt -instcombine -disable-output &&
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2003-09-16 17:29:54 +02:00
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep -v xor | not grep 'or '
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2002-05-06 07:43:36 +02:00
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implementation
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2003-02-18 19:06:44 +01:00
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int %test1(int %A) {
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2002-05-06 07:43:36 +02:00
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%B = or int %A, 0
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ret int %B
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}
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2003-02-18 19:06:44 +01:00
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int %test2(int %A) {
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2002-05-06 07:43:36 +02:00
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%B = or int %A, -1
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ret int %B
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}
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2003-03-10 23:43:56 +01:00
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ubyte %test2a(ubyte %A) {
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%B = or ubyte %A, 255
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ret ubyte %B
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}
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2003-02-18 19:06:44 +01:00
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bool %test3(bool %A) {
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2002-05-06 07:43:36 +02:00
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%B = or bool %A, false
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ret bool %B
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}
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2003-02-18 19:06:44 +01:00
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bool %test4(bool %A) {
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2002-05-06 07:43:36 +02:00
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%B = or bool %A, true
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ret bool %B
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}
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2003-07-23 23:11:56 +02:00
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bool %test5(bool %A) {
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2002-05-06 07:51:26 +02:00
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%B = or bool %A, %A
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ret bool %B
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}
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2003-07-23 23:11:56 +02:00
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int %test6(int %A) {
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2002-05-06 07:51:26 +02:00
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%B = or int %A, %A
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ret int %B
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}
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2003-07-23 23:11:56 +02:00
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int %test7(int %A) { ; A | ~A == -1
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2003-02-18 20:28:47 +01:00
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%NotA = xor int -1, %A
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%B = or int %A, %NotA
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ret int %B
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}
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2003-03-10 19:24:04 +01:00
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2003-07-23 23:11:56 +02:00
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ubyte %test8(ubyte %A) {
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2003-03-10 23:43:56 +01:00
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%B = or ubyte %A, 254
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%C = or ubyte %B, 1
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ret ubyte %C
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}
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2003-03-11 00:52:54 +01:00
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2003-07-23 23:11:56 +02:00
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ubyte %test9(ubyte %A, ubyte %B) { ; Test that (A|c1)|(B|c2) == (A|B)|(c1|c2)
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2003-03-11 01:10:59 +01:00
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%C = or ubyte %A, 1
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%D = or ubyte %B, 254
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%E = or ubyte %C, %D
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ret ubyte %E
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}
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2003-06-04 06:37:46 +02:00
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2003-07-23 23:11:56 +02:00
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ubyte %test10(ubyte %A) {
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2003-07-23 20:28:42 +02:00
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%B = or ubyte %A, 1
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%C = and ubyte %B, 254
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%D = or ubyte %C, 254 ; (X & C1) | C2 --> (X | C2) & (C1|C2)
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ret ubyte %D
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}
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2003-07-23 23:11:56 +02:00
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ubyte %test11(ubyte %A) {
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2003-07-23 20:28:42 +02:00
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%B = or ubyte %A, 254
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%C = xor ubyte %B, 13
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%D = or ubyte %C, 1 ; (X ^ C1) | C2 --> (X | C2) ^ (C1&~C2)
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%E = xor ubyte %D, 12
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ret ubyte %E
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}
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2003-07-23 21:05:29 +02:00
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2003-07-23 23:11:56 +02:00
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uint %test12(uint %A) {
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2003-07-23 21:05:29 +02:00
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%B = or uint %A, 4 ; Should be eliminated
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%C = and uint %B, 8
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ret uint %C
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}
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2003-07-23 23:11:56 +02:00
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uint %test13(uint %A) {
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2003-07-23 21:24:34 +02:00
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%B = or uint %A, 12
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%C = and uint %B, 8 ; Always equal to 8
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ret uint %C
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}
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2003-07-24 21:31:08 +02:00
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bool %test14(uint %A, uint %B) {
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%C1 = setlt uint %A, %B
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%C2 = setgt uint %A, %B
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%D = or bool %C1, %C2 ; (A < B) | (A > B) === A != B
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ret bool %D
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}
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2003-07-24 21:44:51 +02:00
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bool %test15(uint %A, uint %B) {
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%C1 = setlt uint %A, %B
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%C2 = seteq uint %A, %B
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%D = or bool %C1, %C2 ; (A < B) | (A == B) === A <= B
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ret bool %D
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}
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2003-08-12 21:10:50 +02:00
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int %test16(int %A) {
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%B = and int %A, 1
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%C = and int %A, -2 ; -2 = ~1
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%D = or int %B, %C ; %D = and int %B, -1 == %B
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ret int %D
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}
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int %test17(int %A) {
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%B = and int %A, 1
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%C = and int %A, 4
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%D = or int %B, %C ; %D = and int %B, 5
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ret int %D
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}
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2004-09-29 00:31:49 +02:00
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bool %test18(int %A) {
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%B = setge int %A, 100
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%C = setlt int %A, 50
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%D = or bool %B, %C ;; (A-50) >u 50
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ret bool %D
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}
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bool %test19(int %A) {
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%B = seteq int %A, 50
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%C = seteq int %A, 51
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%D = or bool %B, %C ;; (A-50) < 2
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ret bool %D
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}
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2005-05-06 02:58:09 +02:00
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int %test20(int %x) {
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%y = and int %x, 123
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%z = or int %y, %x
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ret int %z
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}
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2005-09-18 05:39:02 +02:00
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uint %test21(uint %tmp.1) {
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%tmp.1.mask1 = add uint %tmp.1, 2
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%tmp.3 = and uint %tmp.1.mask1, 4294967294
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%tmp.5 = and uint %tmp.1, 1
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%tmp.6 = or uint %tmp.5, %tmp.3 ;; add tmp.1, 2
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ret uint %tmp.6
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}
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2006-02-12 09:01:35 +01:00
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int %test22(int %B) {
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%ELIM41 = and int %B, 1 ; <int> [#uses=1]
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%ELIM7 = and int %B, -2 ; <int> [#uses=1]
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%ELIM5 = or int %ELIM41, %ELIM7 ; <int> [#uses=1]
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ret int %ELIM5
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}
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2006-02-26 20:55:30 +01:00
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ushort %test23(ushort %A) {
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%B = shr ushort %A, ubyte 1
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%C = or ushort %B, 32768 ;; fold or into xor
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%D = xor ushort %C, 8193
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ret ushort %D
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}
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