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(find_splittable_givs): Set splittable_regs_updates to

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biv_count for reduced givs.

From-SVN: r14296
This commit is contained in:
Jim Wilson 1997-06-23 19:47:33 -07:00
parent 3dfa8ff88d
commit 3bb2424662
1 changed files with 9 additions and 2 deletions
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11
gcc/unroll.c
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@ -2971,12 +2971,19 @@ 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++;