diff options
Diffstat (limited to 'contrib/gcc/unroll.c')
| -rw-r--r-- | contrib/gcc/unroll.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/contrib/gcc/unroll.c b/contrib/gcc/unroll.c index c598578..4ba6efb 100644 --- a/contrib/gcc/unroll.c +++ b/contrib/gcc/unroll.c @@ -2908,12 +2908,19 @@ find_splittable_givs (bl, unroll_type, loop_start, loop_end, increment, #endif } - /* Givs are only updated once by definition. Mark it so if this is + /* Unreduced givs are only updated once by definition. Reduced givs + are updated as many times as their biv is. Mark it so if this is a splittable register. Don't need to do anything for address givs where this may not be a register. */ if (GET_CODE (v->new_reg) == REG) - splittable_regs_updates[REGNO (v->new_reg)] = 1; + { + int count = 1; + if (! v->ignore) + count = reg_biv_class[REGNO (v->src_reg)]->biv_count; + + splittable_regs_updates[REGNO (v->new_reg)] = count; + } result++; |
