widest_int nit;
int flags;
- flags = flags_from_decl_or_type (current_function_decl);
- if ((flags & (ECF_CONST|ECF_PURE)) && !(flags & ECF_LOOPING_CONST_OR_PURE))
- {
- if (dump_file && (dump_flags & TDF_DETAILS))
- fprintf (dump_file, "Found loop %i to be finite: it is within pure or const function.\n",
- loop->num);
- return true;
- }
-
- if (loop->any_upper_bound
- || max_loop_iterations (loop, &nit))
- {
- if (dump_file && (dump_flags & TDF_DETAILS))
- fprintf (dump_file, "Found loop %i to be finite: upper bound found.\n",
- loop->num);
- return true;
- }
-
if (loop->finite_p)
{
unsigned i;
{
if (dump_file)
fprintf (dump_file, "Assume loop %i to be finite: it has an exit "
- "and -ffinite-loops is on.\n", loop->num);
+ "and -ffinite-loops is on or loop was "
+ "previously finite.\n",
+ loop->num);
return true;
}
}
+ flags = flags_from_decl_or_type (current_function_decl);
+ if ((flags & (ECF_CONST|ECF_PURE)) && !(flags & ECF_LOOPING_CONST_OR_PURE))
+ {
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ fprintf (dump_file,
+ "Found loop %i to be finite: it is within "
+ "pure or const function.\n",
+ loop->num);
+ loop->finite_p = true;
+ return true;
+ }
+
+ if (loop->any_upper_bound
+ /* Loop with no normal exit will not pass max_loop_iterations. */
+ || (!loop->finite_p && max_loop_iterations (loop, &nit)))
+ {
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ fprintf (dump_file, "Found loop %i to be finite: upper bound found.\n",
+ loop->num);
+ loop->finite_p = true;
+ return true;
+ }
+
return false;
}