tbsaunde+...@tbsaunde.org writes:
> From: Trevor Saunders <tbsaunde+...@tbsaunde.org>
>
> This allows us to set the capacity of the vector when we construct it,
> and still use a stack buffer when the size is small enough.
>
> gcc/ChangeLog:
>
> 2017-05-09 Trevor Saunders <tbsaunde+...@tbsaunde.org>
>
> * genrecog.c (int_set::int_set): Explicitly construct our
> auto_vec base class.
> * vec.h (auto_vec::auto_vec): New constructor.
> ---
> gcc/genrecog.c | 8 +++++---
> gcc/vec.h | 12 ++++++++++++
> 2 files changed, 17 insertions(+), 3 deletions(-)
>
> diff --git a/gcc/genrecog.c b/gcc/genrecog.c
> index 6a9e610e7a0..b69043f0d02 100644
> --- a/gcc/genrecog.c
> +++ b/gcc/genrecog.c
> @@ -1407,14 +1407,16 @@ struct int_set : public auto_vec <uint64_t, 1>
> iterator end ();
> };
>
> -int_set::int_set () {}
> +int_set::int_set () : auto_vec<uint64_t, 1> () {}
>
> -int_set::int_set (uint64_t label)
> +int_set::int_set (uint64_t label) :
> + auto_vec<uint64_t, 1> ()
> {
> safe_push (label);
> }
>
> -int_set::int_set (const int_set &other)
> +int_set::int_set (const int_set &other) :
> + auto_vec<uint64_t, 1> ()
> {
> safe_splice (other);
> }
Is this part of the patch necessary? Won't the default constructor
be used anyway?
Thanks,
Richard
> diff --git a/gcc/vec.h b/gcc/vec.h
> index fee46164b01..914f89c350c 100644
> --- a/gcc/vec.h
> +++ b/gcc/vec.h
> @@ -1272,6 +1272,18 @@ public:
> this->m_vec = &m_auto;
> }
>
> + auto_vec (size_t s)
> + {
> + if (s > N)
> + {
> + this->create (s);
> + return;
> + }
> +
> + m_auto.embedded_init (MAX (N, 2), 0, 1);
> + this->m_vec = &m_auto;
> + }
> +
> ~auto_vec ()
> {
> this->release ();
