RISC-V: Cleanup the codes of bitmap create and free [NFC]

From: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>

This patch is a NFC patch to move the codes into a wrapper function so that
they can be reused. I will reuse them in the following patches.

gcc/ChangeLog:

        * config/riscv/riscv-vsetvl.cc (vector_infos_manager::create_bitmap_vectors): New function.
        (vector_infos_manager::free_bitmap_vectors): Ditto.
        (pass_vsetvl::pre_vsetvl): Adjust codes.
        * config/riscv/riscv-vsetvl.h: New function declaration.

---
 gcc/config/riscv/riscv-vsetvl.cc | 95 +++++++++++++++++++-------------
 gcc/config/riscv/riscv-vsetvl.h  |  2 +
 2 files changed, 59 insertions(+), 38 deletions(-)

committed, thanks.

On Tue, Jan 10, 2023 at 6:33 AM <juzhe.zhong@rivai.ai> wrote:

> From: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
>
> This patch is a NFC patch to move the codes into a wrapper function so that
> they can be reused. I will reuse them in the following patches.
>
> gcc/ChangeLog:
>
>         * config/riscv/riscv-vsetvl.cc
> (vector_infos_manager::create_bitmap_vectors): New function.
>         (vector_infos_manager::free_bitmap_vectors): Ditto.
>         (pass_vsetvl::pre_vsetvl): Adjust codes.
>         * config/riscv/riscv-vsetvl.h: New function declaration.
>
> ---
>  gcc/config/riscv/riscv-vsetvl.cc | 95 +++++++++++++++++++-------------
>  gcc/config/riscv/riscv-vsetvl.h  |  2 +
>  2 files changed, 59 insertions(+), 38 deletions(-)
>
> diff --git a/gcc/config/riscv/riscv-vsetvl.cc
> b/gcc/config/riscv/riscv-vsetvl.cc
> index d42cfa91d63..7800c2ee509 100644
> --- a/gcc/config/riscv/riscv-vsetvl.cc
> +++ b/gcc/config/riscv/riscv-vsetvl.cc
> @@ -1569,18 +1569,62 @@ vector_infos_manager::release (void)
>      vector_exprs.release ();
>
>    if (optimize > 0)
> -    {
> -      /* Finished. Free up all the things we've allocated.  */
> -      free_edge_list (vector_edge_list);
> -      sbitmap_vector_free (vector_del);
> -      sbitmap_vector_free (vector_insert);
> -      sbitmap_vector_free (vector_kill);
> -      sbitmap_vector_free (vector_antic);
> -      sbitmap_vector_free (vector_transp);
> -      sbitmap_vector_free (vector_comp);
> -      sbitmap_vector_free (vector_avin);
> -      sbitmap_vector_free (vector_avout);
> -    }
> +    free_bitmap_vectors ();
> +}
> +
> +void
> +vector_infos_manager::create_bitmap_vectors (void)
> +{
> +  /* Create the bitmap vectors.  */
> +  vector_antic = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> +                                      vector_exprs.length ());
> +  vector_transp = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> +                                       vector_exprs.length ());
> +  vector_comp = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> +                                     vector_exprs.length ());
> +  vector_avin = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> +                                     vector_exprs.length ());
> +  vector_avout = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> +                                      vector_exprs.length ());
> +  vector_kill = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> +                                     vector_exprs.length ());
> +
> +  bitmap_vector_ones (vector_transp, last_basic_block_for_fn (cfun));
> +  bitmap_vector_clear (vector_antic, last_basic_block_for_fn (cfun));
> +  bitmap_vector_clear (vector_comp, last_basic_block_for_fn (cfun));
> +}
> +
> +void
> +vector_infos_manager::free_bitmap_vectors (void)
> +{
> +  /* Finished. Free up all the things we've allocated.  */
> +  free_edge_list (vector_edge_list);
> +  if (vector_del)
> +    sbitmap_vector_free (vector_del);
> +  if (vector_insert)
> +    sbitmap_vector_free (vector_insert);
> +  if (vector_kill)
> +    sbitmap_vector_free (vector_kill);
> +  if (vector_antic)
> +    sbitmap_vector_free (vector_antic);
> +  if (vector_transp)
> +    sbitmap_vector_free (vector_transp);
> +  if (vector_comp)
> +    sbitmap_vector_free (vector_comp);
> +  if (vector_avin)
> +    sbitmap_vector_free (vector_avin);
> +  if (vector_avout)
> +    sbitmap_vector_free (vector_avout);
> +
> +  vector_edge_list = nullptr;
> +  vector_kill = nullptr;
> +  vector_del = nullptr;
> +  vector_insert = nullptr;
> +  vector_antic = nullptr;
> +  vector_transp = nullptr;
> +  vector_comp = nullptr;
> +  vector_avin = nullptr;
> +  vector_avout = nullptr;
>  }
>
>  void
> @@ -2480,32 +2524,7 @@ pass_vsetvl::pre_vsetvl (void)
>    /* Compute entity list.  */
>    prune_expressions ();
>
> -  /* Create the bitmap vectors.  */
> -  m_vector_manager->vector_antic
> -    = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> -                           m_vector_manager->vector_exprs.length ());
> -  m_vector_manager->vector_transp
> -    = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> -                           m_vector_manager->vector_exprs.length ());
> -  m_vector_manager->vector_comp
> -    = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> -                           m_vector_manager->vector_exprs.length ());
> -  m_vector_manager->vector_avin
> -    = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> -                           m_vector_manager->vector_exprs.length ());
> -  m_vector_manager->vector_avout
> -    = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> -                           m_vector_manager->vector_exprs.length ());
> -  m_vector_manager->vector_kill
> -    = sbitmap_vector_alloc (last_basic_block_for_fn (cfun),
> -                           m_vector_manager->vector_exprs.length ());
> -
> -  bitmap_vector_ones (m_vector_manager->vector_transp,
> -                     last_basic_block_for_fn (cfun));
> -  bitmap_vector_clear (m_vector_manager->vector_antic,
> -                      last_basic_block_for_fn (cfun));
> -  bitmap_vector_clear (m_vector_manager->vector_comp,
> -                      last_basic_block_for_fn (cfun));
> +  m_vector_manager->create_bitmap_vectors ();
>    compute_local_properties ();
>    m_vector_manager->vector_edge_list = pre_edge_lcm_avs (
>      m_vector_manager->vector_exprs.length (),
> m_vector_manager->vector_transp,
> diff --git a/gcc/config/riscv/riscv-vsetvl.h
> b/gcc/config/riscv/riscv-vsetvl.h
> index 33481a87163..dc16c55b918 100644
> --- a/gcc/config/riscv/riscv-vsetvl.h
> +++ b/gcc/config/riscv/riscv-vsetvl.h
> @@ -341,6 +341,8 @@ public:
>    bool all_same_ratio_p (sbitmap) const;
>
>    void release (void);
> +  void create_bitmap_vectors (void);
> +  void free_bitmap_vectors (void);
>
>    void dump (FILE *) const;
>  };
> --
> 2.36.1
>
>