| /* PR rtl-optimization/52714 |
| |
| Check that combine manages to remove the "stack == 0" test. |
| Without ICEing. */ |
| |
| /* { dg-do compile } */ |
| /* { dg-options "-O1" } */ |
| |
| int __re_compile_fastmap(unsigned char *p) |
| { |
| unsigned char **stack; |
| unsigned size; |
| unsigned avail; |
| |
| stack = __builtin_alloca(5 * sizeof(unsigned char*)); |
| if (stack == 0) |
| return -2; |
| size = 5; |
| avail = 0; |
| |
| for (;;) { |
| switch (*p++) { |
| case 0: |
| if (avail == size) |
| return -2; |
| stack[avail++] = p; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* { dg-final { scan-assembler-not {\mtst\.l %sp\M} } } */ |
