王亮 <[email protected]> writes:
> Hi,
>
> Current implementation of ggc_alloc_rtvec_sized is
>
> #define ggc_alloc_rtvec_sized(NELT) \
> (ggc_alloc_zone_vec_rtvec_def (sizeof (rtx), \
> sizeof (struct rtvec_def) + ((NELT) - 1), \
> &rtl_zone))
>
> The size it allocates is
>
> (sizeof (struct rtvec_def) + ((NELT) - 1)) * sizeof (rtx)
> // (1)
>
> Originally, the allocated size is
>
> sizeof (struct rtvec_def) + ((NELT) - 1) * sizeof (rtx)
> // (2)
>
> So current implementation allocates more spaces than before.
>
> I replace the second parameter of ggc_alloc_zone_vec_rtvec_def with
>
> (sizeof (struct rtvec_def) + sizeof (rtx) - 1) / sizeof (rtx) +
> ((NELT) - 1) // (3)
I think it was meant to be this:
#define ggc_alloc_rtvec_sized(NELT) \
ggc_alloc_zone_rtvec_def (sizeof (struct rtvec_def) \
+ ((NELT) - 1) * sizeof (rtx), \
&rtl_zone)
Andreas.
--
Andreas Schwab, [email protected]
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
