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Diffstat (limited to 'gcc-4.9/gcc/ira.c')
| -rw-r--r-- | gcc-4.9/gcc/ira.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc-4.9/gcc/ira.c b/gcc-4.9/gcc/ira.c index 4d91d2196..c0e8a0d23 100644 --- a/gcc-4.9/gcc/ira.c +++ b/gcc-4.9/gcc/ira.c @@ -5347,7 +5347,17 @@ 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 { |