| |
| /* { dg-do compile { target {{ i?86-*-* x86_64-*-* } && lp64 } } } */ |
| /* { dg-options "-O2 -m64 -fdump-tree-ivopts-details" } */ |
| |
| /* iv i's step 16 so its period is smaller than the max iterations |
| * i.e. replacing if (p2 > p_limit2) with testing of i may result in |
| * overflow. */ |
| long foo(long* p, long* p2, int N1, int N2) |
| { |
| unsigned long i = 0; |
| long* p_limit2 = p2 + N2; |
| long s = 0; |
| while (i < N1) |
| { |
| p2++; |
| i += 16; |
| if (p2 > p_limit2) |
| break; |
| s += p[i]; |
| } |
| return s; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "Replacing" 0 "ivopts"} } */ |
| /* { dg-final { cleanup-tree-dump "ivopts" } } */ |
