Chris Lattner | fd747f8 | 2004-03-12 06:01:00 +0000 | [diff] [blame] | 1 | ; This test makes sure that these instructions are properly eliminated. |
| 2 | ; |
| 3 | |
| 4 | ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep select |
| 5 | |
| 6 | implementation |
| 7 | |
| 8 | int %test1(int %A, int %B) { |
| 9 | %C = select bool false, int %A, int %B |
| 10 | ret int %C |
| 11 | } |
| 12 | |
| 13 | int %test2(int %A, int %B) { |
| 14 | %C = select bool true, int %A, int %B |
| 15 | ret int %C |
| 16 | } |
| 17 | |
Chris Lattner | b785d28 | 2004-03-30 19:36:54 +0000 | [diff] [blame] | 18 | int %test3(bool %C, int %I) { |
| 19 | %V = select bool %C, int %I, int %I ; V = I |
| 20 | ret int %V |
| 21 | } |
| 22 | |
| 23 | bool %test4(bool %C) { |
| 24 | %V = select bool %C, bool true, bool false ; V = C |
| 25 | ret bool %V |
| 26 | } |
| 27 | |
| 28 | bool %test5(bool %C) { |
| 29 | %V = select bool %C, bool false, bool true ; V = !C |
| 30 | ret bool %V |
| 31 | } |
| 32 | |
| 33 | int %test6(bool %C) { |
| 34 | %V = select bool %C, int 1, int 0 ; V = cast C to int |
| 35 | ret int %V |
| 36 | } |
Chris Lattner | fd747f8 | 2004-03-12 06:01:00 +0000 | [diff] [blame] | 37 | |
Chris Lattner | ac42fd5 | 2004-04-08 04:43:04 +0000 | [diff] [blame] | 38 | bool %test7(bool %C, bool %X) { |
| 39 | %R = select bool %C, bool true, bool %X ; R = or C, X |
| 40 | ret bool %R |
| 41 | } |
| 42 | |
| 43 | bool %test8(bool %C, bool %X) { |
| 44 | %R = select bool %C, bool %X, bool false ; R = and C, X |
| 45 | ret bool %R |
| 46 | } |
| 47 | |
| 48 | bool %test9(bool %C, bool %X) { |
| 49 | %R = select bool %C, bool false, bool %X ; R = and !C, X |
| 50 | ret bool %R |
| 51 | } |
| 52 | |
| 53 | bool %test10(bool %C, bool %X) { |
| 54 | %R = select bool %C, bool %X, bool true ; R = or !C, X |
| 55 | ret bool %R |
| 56 | } |
Chris Lattner | 755cab2 | 2004-04-09 18:19:29 +0000 | [diff] [blame] | 57 | |
| 58 | int %test11(int %a) { |
| 59 | %C = seteq int %a, 0 |
| 60 | %R = select bool %C, int 0, int 1 |
| 61 | ret int %R |
| 62 | } |
| 63 | |
Chris Lattner | be68fd0 | 2004-04-09 23:43:48 +0000 | [diff] [blame] | 64 | int %test12(bool %cond, int %a) { |
| 65 | %b = or int %a, 1 |
| 66 | %c = select bool %cond, int %b, int %a |
| 67 | ret int %c |
| 68 | } |
| 69 | |
| 70 | int %test12a(bool %cond, int %a) { |
| 71 | %b = shr int %a, ubyte 1 |
| 72 | %c = select bool %cond, int %b, int %a |
| 73 | ret int %c |
| 74 | } |
| 75 | |
| 76 | int %test12b(bool %cond, int %a) { |
| 77 | %b = shr int %a, ubyte 1 |
| 78 | %c = select bool %cond, int %a, int %b |
| 79 | ret int %c |
| 80 | } |
| 81 | |
Chris Lattner | 1f99df6 | 2004-04-10 22:21:14 +0000 | [diff] [blame^] | 82 | int %test13(int %a, int %b) { |
| 83 | %C = seteq int %a, %b |
| 84 | %V = select bool %C, int %a, int %b |
| 85 | ret int %V |
| 86 | } |
| 87 | |
| 88 | int %test13a(int %a, int %b) { |
| 89 | %C = setne int %a, %b |
| 90 | %V = select bool %C, int %a, int %b |
| 91 | ret int %V |
| 92 | } |
| 93 | |
| 94 | int %test13b(int %a, int %b) { |
| 95 | %C = seteq int %a, %b |
| 96 | %V = select bool %C, int %b, int %a |
| 97 | ret int %V |
| 98 | } |