diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/config/m32c/m32c.c | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4cf04ef..25223c8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,8 @@ 2007-01-25 DJ Delorie <dj@redhat.com> + * config/m32c/m32c.c (m32c_cannot_change_mode_class): We don't + allow changes to modes which don't fit in those registers. + * reload1.c (choose_reload_regs): Check for invalid subregs before computing their locations, not after. diff --git a/gcc/config/m32c/m32c.c b/gcc/config/m32c/m32c.c index de5f22a..b28d747 100644 --- a/gcc/config/m32c/m32c.c +++ b/gcc/config/m32c/m32c.c @@ -846,11 +846,19 @@ int m32c_cannot_change_mode_class (enum machine_mode from, enum machine_mode to, int rclass) { + int rn; #if DEBUG0 fprintf (stderr, "cannot change from %s to %s in %s\n", mode_name[from], mode_name[to], class_names[rclass]); #endif + /* If the larger mode isn't allowed in any of these registers, we + can't allow the change. */ + for (rn = 0; rn < FIRST_PSEUDO_REGISTER; rn++) + if (class_contents[rclass][0] & (1 << rn)) + if (! m32c_hard_regno_ok (rn, to)) + return 1; + if (to == QImode) return (class_contents[rclass][0] & 0x1ffa); |