| // P1774R8 - Portable assumptions |
| // { dg-do compile { target c++11 } } |
| // { dg-options "-O2 -fdump-tree-vrp2" } |
| // Test the we can optimize based on conditions in assume. |
| |
| int |
| f1 (unsigned x, unsigned y, unsigned z) |
| { |
| [[assume (x == 2 && y < 3 && z < 20)]]; |
| unsigned q = x + y + z; |
| if (q > 23) |
| return 0; |
| return 1; |
| } |
| |
| |
| int |
| f2 (int x, int y, int z) |
| { |
| [[assume (x+12 == 14 && y >= 0 && y + 10 < 13 && z + 4 >= 4 && z - 2 < 18)]]; |
| unsigned q = x + y + z; |
| if (q*2 > 46) |
| return 0; |
| return 1; |
| } |
| |
| int |
| f3 (int x, int y, int z) |
| { |
| [[assume (x + 12 == 14 && z / 2 > 0)]]; |
| [[assume (y >= 0 && z - 2 < 18)]]; |
| [[assume (y + 10 < 13 && z + 4 >= 2)]]; |
| int q = x + y + z; |
| if (q * 2 > 46) |
| return 0; |
| if (z < 0) |
| return 0; |
| return 1; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "return 0" 0 "vrp2" } } */ |
| /* { dg-final { scan-tree-dump-times "return 1" 3 "vrp2" } } */ |
