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| author | Vladimir Makarov <vmakarov@redhat.com> | 2010-09-09 13:53:32 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2010-09-09 13:53:32 +0000 |
| commit | de8e52f063c997bed974210186c9105e9c0a019d (patch) | |
| tree | c7e55143b7b9838e9708e7117f3582b97d9d2634 /gcc/ira.c | |
| parent | 5fdc49eca660d130ec4815eb7a804aa7fd89773d (diff) | |
| download | gcc-de8e52f063c997bed974210186c9105e9c0a019d.zip gcc-de8e52f063c997bed974210186c9105e9c0a019d.tar.gz gcc-de8e52f063c997bed974210186c9105e9c0a019d.tar.bz2 | |
re PR middle-end/44554 (Stack space after sigsetjmp is reused)
2010-09-09 Vladimir Makarov <vmakarov@redhat.com>
PR middle-end/44554
* ira.c (ira): Switch off sharing spill slots if setjmp is called.
From-SVN: r164102
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -3178,9 +3178,12 @@ ira (FILE *f) ira_assert (ira_conflicts_p || !loops_p); saved_flag_ira_share_spill_slots = flag_ira_share_spill_slots; - if (too_high_register_pressure_p ()) + if (too_high_register_pressure_p () || cfun->calls_setjmp) /* It is just wasting compiler's time to pack spilled pseudos into - stack slots in this case -- prohibit it. */ + stack slots in this case -- prohibit it. We also do this if + there is setjmp call because a variable not modified between + setjmp and longjmp the compiler is required to preserve its + value and sharing slots does not guarantee it. */ flag_ira_share_spill_slots = FALSE; ira_color (); |