[v4,0/4] RISC-V: Support z*inx extensions.

  Zfinx extension[1] had already ratified. Here is the 
implementation patch set that reuse floating point pattern and ban
the use of fpr when use z*inx as a target.

Current works can be find in follow links, binutils and simulator 
works already supported on upstream.
  https://github.com/pz9115/riscv-gcc/tree/zfinx-rebase

Thanks for Tariq Kurd, Kito Cheng, Jim Willson, 
Jeremy Bennett helped us a lot with this work.

[1] https://github.com/riscv/riscv-zfinx/blob/main/zfinx-1.0.0-rc.pdf

Version log:

v2: As Kito Cheng's comment, add Changelog part in patches, update imply 
info in riscv-common.c, remove useless check and update annotation in 
riscv.c.

v3: Update with new isa-spec version 20191213, make zfinx imply zicsr as
default, fix the lack of fcsr use in zfinx.

v4: Rebase patch with upstream, add zhinx/zhinxmin extensions support.
Add additional zhinx/zhinxmin same like zfh/zfhmin.

Jiawei (4):
  RISC-V: Minimal support of z*inx extension.
  RISC-V: Target support for z*inx extension.
  RISC-V: Limit regs use for z*inx extension.
  RISC-V: Add zhinx/zhinxmin testcases.

 gcc/common/config/riscv/riscv-common.cc       | 18 +++++
 gcc/config/riscv/arch-canonicalize            |  5 ++
 gcc/config/riscv/constraints.md               |  5 +-
 gcc/config/riscv/iterators.md                 |  6 +-
 gcc/config/riscv/riscv-builtins.cc            |  4 +-
 gcc/config/riscv/riscv-c.cc                   |  2 +-
 gcc/config/riscv/riscv-opts.h                 | 10 +++
 gcc/config/riscv/riscv.cc                     | 21 ++++-
 gcc/config/riscv/riscv.md                     | 78 ++++++++++---------
 gcc/config/riscv/riscv.opt                    |  3 +
 .../gcc.target/riscv/_Float16-zhinx-1.c       | 10 +++
 .../gcc.target/riscv/_Float16-zhinx-2.c       |  9 +++
 .../gcc.target/riscv/_Float16-zhinx-3.c       |  9 +++
 .../gcc.target/riscv/_Float16-zhinxmin-1.c    | 10 +++
 .../gcc.target/riscv/_Float16-zhinxmin-2.c    | 10 +++
 .../gcc.target/riscv/_Float16-zhinxmin-3.c    | 10 +++
 16 files changed, 160 insertions(+), 50 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinx-1.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinx-2.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinx-3.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinxmin-1.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinxmin-2.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinxmin-3.c
  

Verified with qemu, committed to master, thanks!

On Thu, Oct 20, 2022 at 5:43 PM jiawei <jiawei@iscas.ac.cn> wrote:
>
> Zfinx extension[1] had already ratified. Here is the
> implementation patch set that reuse floating point pattern and ban
> the use of fpr when use z*inx as a target.
>
> Current works can be find in follow links, binutils and simulator
> works already supported on upstream.
>   https://github.com/pz9115/riscv-gcc/tree/zfinx-rebase
>
> Thanks for Tariq Kurd, Kito Cheng, Jim Willson,
> Jeremy Bennett helped us a lot with this work.
>
> [1] https://github.com/riscv/riscv-zfinx/blob/main/zfinx-1.0.0-rc.pdf
>
> Version log:
>
> v2: As Kito Cheng's comment, add Changelog part in patches, update imply
> info in riscv-common.c, remove useless check and update annotation in
> riscv.c.
>
> v3: Update with new isa-spec version 20191213, make zfinx imply zicsr as
> default, fix the lack of fcsr use in zfinx.
>
> v4: Rebase patch with upstream, add zhinx/zhinxmin extensions support.
> Add additional zhinx/zhinxmin same like zfh/zfhmin.
>
> Jiawei (4):
>   RISC-V: Minimal support of z*inx extension.
>   RISC-V: Target support for z*inx extension.
>   RISC-V: Limit regs use for z*inx extension.
>   RISC-V: Add zhinx/zhinxmin testcases.
>
>  gcc/common/config/riscv/riscv-common.cc       | 18 +++++
>  gcc/config/riscv/arch-canonicalize            |  5 ++
>  gcc/config/riscv/constraints.md               |  5 +-
>  gcc/config/riscv/iterators.md                 |  6 +-
>  gcc/config/riscv/riscv-builtins.cc            |  4 +-
>  gcc/config/riscv/riscv-c.cc                   |  2 +-
>  gcc/config/riscv/riscv-opts.h                 | 10 +++
>  gcc/config/riscv/riscv.cc                     | 21 ++++-
>  gcc/config/riscv/riscv.md                     | 78 ++++++++++---------
>  gcc/config/riscv/riscv.opt                    |  3 +
>  .../gcc.target/riscv/_Float16-zhinx-1.c       | 10 +++
>  .../gcc.target/riscv/_Float16-zhinx-2.c       |  9 +++
>  .../gcc.target/riscv/_Float16-zhinx-3.c       |  9 +++
>  .../gcc.target/riscv/_Float16-zhinxmin-1.c    | 10 +++
>  .../gcc.target/riscv/_Float16-zhinxmin-2.c    | 10 +++
>  .../gcc.target/riscv/_Float16-zhinxmin-3.c    | 10 +++
>  16 files changed, 160 insertions(+), 50 deletions(-)
>  create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinx-1.c
>  create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinx-2.c
>  create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinx-3.c
>  create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinxmin-1.c
>  create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinxmin-2.c
>  create mode 100644 gcc/testsuite/gcc.target/riscv/_Float16-zhinxmin-3.c
>
> --
> 2.25.1
>