[PATCH v2 00/13] Support Intel APX EGPR

[Hongyu Wang]

Hi,

This is a v2 patch for APX support which follows-up previous discussion in
https://gcc.gnu.org/pipermail/gcc-patches/2023-August/628904.html

As discussed in previous thread, the inverse approach to extend base/index reg
support with new memory constraints requrires much more effort both in
middle-end and backend, so we keep the backend implementation logic. Also for
inline asm, it is hard to provide memory constraint to use EGPR by force due to
the limitation of base/index reg class hook, so we just add one register class
that allows EGPR usage by force.

The major changes are

  1. Add new macros INSN_BASE_REG_CLASS/REGNO_OK_FOR_INSN_BASE_P instead of
  using old MODE_CODE macros.
  2. Add a series of constraints that prohibits EGPR as counterparts of common
  constraints that may involve register/memory/address. All those are prefixed
  with "j" to avoid confilts with previous constraints.
  3. Support constraint mapping for all gpr related common constraints in
  inline asm. 

Bootstrapped/regtested x86_64-linux-gnu.
Ok for trunk?

Hongyu Wang (2):
  [APX EGPR] middle-end: Add index_reg_class with insn argument.
  [APX EGPR] Handle GPR16 only vector move insns

Kong Lingling (11):
  [APX EGPR] middle-end: Add insn argument to base_reg_class
  [APX_EGPR] Initial support for APX_F
  [APX EGPR] Add 16 new integer general purpose registers
  [APX EGPR] Add register and memory constraints that disallow EGPR
  [APX EGPR] Add backend hook for base_reg_class/index_reg_class.
  [APX EGPR] Map reg/mem constraints in inline asm to non-EGPR
    constraint.
  [APX EGPR] Handle legacy insn that only support GPR16 (1/5)
  [APX EGPR] Handle legacy insns that only support GPR16 (2/5)
  [APX EGPR] Handle legacy insns that only support GPR16 (3/5)
  [APX_EGPR] Handle legacy insns that only support GPR16 (4/5)
  [APX EGPR] Handle vex insns that only support GPR16 (5/5)

 gcc/addresses.h                               |  29 +-
 gcc/common/config/i386/cpuinfo.h              |  12 +-
 gcc/common/config/i386/i386-common.cc         |  17 +
 gcc/common/config/i386/i386-cpuinfo.h         |   1 +
 gcc/common/config/i386/i386-isas.h            |   1 +
 gcc/config/i386/constraints.md                |  65 +-
 gcc/config/i386/cpuid.h                       |   1 +
 gcc/config/i386/i386-isa.def                  |   1 +
 gcc/config/i386/i386-options.cc               |  18 +
 gcc/config/i386/i386-opts.h                   |   8 +
 gcc/config/i386/i386-protos.h                 |   5 +
 gcc/config/i386/i386.cc                       | 303 ++++++-
 gcc/config/i386/i386.h                        |  69 +-
 gcc/config/i386/i386.md                       | 131 ++-
 gcc/config/i386/i386.opt                      |  30 +
 gcc/config/i386/mmx.md                        | 154 ++--
 gcc/config/i386/sse.md                        | 792 ++++++++++++------
 gcc/doc/invoke.texi                           |  11 +-
 gcc/doc/tm.texi                               |  21 +
 gcc/doc/tm.texi.in                            |  21 +
 gcc/lra-constraints.cc                        |  32 +-
 gcc/reload.cc                                 |  34 +-
 gcc/reload1.cc                                |   2 +-
 gcc/testsuite/gcc.target/i386/apx-1.c         |   8 +
 .../gcc.target/i386/apx-egprs-names.c         |  17 +
 .../gcc.target/i386/apx-inline-gpr-norex2.c   |  25 +
 .../gcc.target/i386/apx-interrupt-1.c         | 102 +++
 .../i386/apx-legacy-insn-check-norex2-asm.c   |   5 +
 .../i386/apx-legacy-insn-check-norex2.c       | 181 ++++
 .../gcc.target/i386/apx-spill_to_egprs-1.c    |  25 +
 gcc/testsuite/lib/target-supports.exp         |  10 +
 31 files changed, 1683 insertions(+), 448 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/apx-1.c
 create mode 100644 gcc/testsuite/gcc.target/i386/apx-egprs-names.c
 create mode 100644 gcc/testsuite/gcc.target/i386/apx-inline-gpr-norex2.c
 create mode 100644 gcc/testsuite/gcc.target/i386/apx-interrupt-1.c
 create mode 100644 gcc/testsuite/gcc.target/i386/apx-legacy-insn-check-norex2-asm.c
 create mode 100644 gcc/testsuite/gcc.target/i386/apx-legacy-insn-check-norex2.c
 create mode 100644 gcc/testsuite/gcc.target/i386/apx-spill_to_egprs-1.c

-- 
2.31.1