[Bug tree-optimization/86214] [8/9 Regression] Strongly increased stack usage
jakub at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Thu Jan 17 08:58:00 GMT 2019
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86214
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, the #c13 testcase shows the issue, but in the early inliner, not in IPA
inliner like is triggered on the #c7 testcase.
This modified testcase triggers it in the IPA inliner:
typedef __SIZE_TYPE__ size_t;
struct A { A (); ~A (); int a; void qux (const char *); };
int bar (char *);
static inline A
foo ()
{
char b[8192];
int x = bar (b);
A s;
if (x > 0 && (size_t) x < sizeof b)
s.qux (b);
return s;
}
void
baz ()
{
A a;
char c[1024];
bar (c);
foo (); foo (); foo (); foo (); foo ();
foo (); foo (); foo (); foo (); foo ();
foo (); foo (); foo (); foo (); foo ();
foo (); foo (); foo (); foo (); foo ();
}
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