Ted Kremenek | 58f6f1e | 2011-10-25 00:25:24 +0000 | [diff] [blame] | 1 | // RUN: %clang -cc1 -analyze -analyzer-checker=debug.DumpDominators %s 2>&1 | FileCheck %s |
| 2 | |
| 3 | // Test the DominatorsTree implementation with various control flows |
| 4 | int test1() |
| 5 | { |
| 6 | int x = 6; |
| 7 | int y = x/2; |
| 8 | int z; |
| 9 | |
| 10 | while(y > 0) { |
| 11 | if(y < x) { |
| 12 | x = x/y; |
| 13 | y = y-1; |
| 14 | }else{ |
| 15 | z = x - y; |
| 16 | } |
| 17 | x = x - 1; |
| 18 | x = x - 1; |
| 19 | } |
| 20 | z = x+y; |
| 21 | z = 3; |
| 22 | return 0; |
| 23 | } |
| 24 | |
| 25 | // CHECK: Immediate dominance tree (Node#,IDom#): |
| 26 | // CHECK: (0,1) |
| 27 | // CHECK: (1,2) |
| 28 | // CHECK: (2,8) |
| 29 | // CHECK: (3,4) |
| 30 | // CHECK: (4,7) |
| 31 | // CHECK: (5,7) |
| 32 | // CHECK: (6,7) |
| 33 | // CHECK: (7,2) |
| 34 | // CHECK: (8,9) |
| 35 | // CHECK: (9,9) |
| 36 | |
| 37 | int test2() |
| 38 | { |
| 39 | int x,y,z; |
| 40 | |
| 41 | x = 10; y = 100; |
| 42 | if(x > 0){ |
| 43 | y = 1; |
| 44 | }else{ |
| 45 | while(x<=0){ |
| 46 | x++; |
| 47 | y++; |
| 48 | } |
| 49 | } |
| 50 | z = y; |
| 51 | |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | // CHECK: Immediate dominance tree (Node#,IDom#): |
| 56 | // CHECK: (0,1) |
| 57 | // CHECK: (1,6) |
| 58 | // CHECK: (2,6) |
| 59 | // CHECK: (3,4) |
| 60 | // CHECK: (4,2) |
| 61 | // CHECK: (5,6) |
| 62 | // CHECK: (6,7) |
| 63 | // CHECK: (7,7) |
| 64 | |
| 65 | int test3() |
| 66 | { |
| 67 | int x,y,z; |
| 68 | |
| 69 | x = y = z = 1; |
| 70 | if(x>0) { |
| 71 | while(x>=0){ |
| 72 | while(y>=x) { |
| 73 | x = x-1; |
| 74 | y = y/2; |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | z = y; |
| 79 | |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | // CHECK: Immediate dominance tree (Node#,IDom#): |
| 84 | // CHECK: (0,1) |
| 85 | // CHECK: (1,7) |
| 86 | // CHECK: (2,7) |
| 87 | // CHECK: (3,4) |
| 88 | // CHECK: (4,2) |
| 89 | // CHECK: (5,6) |
| 90 | // CHECK: (6,4) |
| 91 | // CHECK: (7,8) |
| 92 | // CHECK: (8,8) |
| 93 | |
| 94 | int test4() |
| 95 | { |
| 96 | int y = 3; |
| 97 | while(y > 0) { |
| 98 | if(y < 3) { |
| 99 | while(y>0) |
| 100 | y ++; |
| 101 | }else{ |
| 102 | while(y<10) |
| 103 | y ++; |
| 104 | } |
| 105 | } |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | // CHECK: Immediate dominance tree (Node#,IDom#): |
| 110 | // CHECK: (0,1) |
| 111 | // CHECK: (1,2) |
| 112 | // CHECK: (2,11) |
| 113 | // CHECK: (3,10) |
| 114 | // CHECK: (4,10) |
| 115 | // CHECK: (5,6) |
| 116 | // CHECK: (6,4) |
| 117 | // CHECK: (7,10) |
| 118 | // CHECK: (8,9) |
| 119 | // CHECK: (9,7) |
| 120 | // CHECK: (10,2) |
| 121 | // CHECK: (11,12) |
| 122 | // CHECK: (12,12) |
| 123 | |
| 124 | int test5() |
| 125 | { |
| 126 | int x,y,z,a,b,c; |
| 127 | x = 1; |
| 128 | y = 2; |
| 129 | z = 3; |
| 130 | a = 4; |
| 131 | b = 5; |
| 132 | c = 6; |
| 133 | if ( x < 10 ) { |
| 134 | if ( y < 10 ) { |
| 135 | if ( z < 10 ) { |
| 136 | x = 4; |
| 137 | } else { |
| 138 | x = 5; |
| 139 | } |
| 140 | a = 10; |
| 141 | } else { |
| 142 | x = 6; |
| 143 | } |
| 144 | b = 10; |
| 145 | } else { |
| 146 | x = 7; |
| 147 | } |
| 148 | c = 11; |
| 149 | return 0; |
| 150 | } |
| 151 | |
| 152 | // CHECK: Immediate dominance tree (Node#,IDom#): |
| 153 | // CHECK: (0,1) |
| 154 | // CHECK: (1,10) |
| 155 | // CHECK: (2,10) |
| 156 | // CHECK: (3,9) |
| 157 | // CHECK: (4,9) |
| 158 | // CHECK: (5,8) |
| 159 | // CHECK: (6,8) |
| 160 | // CHECK: (7,8) |
| 161 | // CHECK: (8,9) |
| 162 | // CHECK: (9,10) |
| 163 | // CHECK: (10,11) |
| 164 | // CHECK: (11,11) |
| 165 | |