diff options
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ira.c b/gcc/ira.c index 9c9e71d1be1..e610d358177 100644 --- a/gcc/ira.c +++ b/gcc/ira.c @@ -5263,7 +5263,18 @@ ira (FILE *f) ira_allocno_iterator ai; FOR_EACH_ALLOCNO (a, ai) - ALLOCNO_REGNO (a) = REGNO (ALLOCNO_EMIT_DATA (a)->reg); + { + int old_regno = ALLOCNO_REGNO (a); + int new_regno = REGNO (ALLOCNO_EMIT_DATA (a)->reg); + + ALLOCNO_REGNO (a) = new_regno; + + if (old_regno != new_regno) + setup_reg_classes (new_regno, reg_preferred_class (old_regno), + reg_alternate_class (old_regno), + reg_allocno_class (old_regno)); + } + } else { |