[PATCH v1 0/4] RISC-V: Combine vec_duplicate + vdivu.vv to vdivu.vx on GR2VR cost

[pan2 . li]

From: Pan Li <pan2...@intel.com>

This patch would like to introduce the combine of vec_dup + vdivu.vv into
vdivu.vx on the cost value of GR2VR.  The late-combine will take place if
the cost of GR2VR is zero, or reject the combine if non-zero like 1, 15
in test.  There will be two cases for the combine:

Case 0:
 |   ...
 |   vmv.v.x
 | L1:
 |   vdivu.vv
 |   J L1
 |   ...

Case 1:
 |   ...
 | L1:
 |   vmv.v.x
 |   vdivu.vv
 |   J L1
 |   ...

Both will be combined to below if the cost of GR2VR is zero.
 |   ...
 | L1:
 |   vdivu.vx
 |   J L1
 |   ...

The below test suites are passed for this patch series.
* The rv64gcv fully regression test.

Pan Li (4):
  RISC-V: Combine vec_duplicate + vidvu.vv to vdivu.vx on GR2VR cost
  RISC-V: Add test for vec_duplicate + vdivu.vv combine case 0 with GR2VR cost 
0, 2 and 15
  RISC-V: Add test for vec_duplicate + vdivu.vv combine case 1 with GR2VR cost 
0, 1 and 2
  RISC-V: Reconcile the existing test for vdivu.vx combine

 gcc/config/riscv/riscv-v.cc                   |   1 +
 gcc/config/riscv/riscv.cc                     |   1 +
 gcc/config/riscv/vector-iterators.md          |   2 +-
 .../rvv/autovec/binop/vdiv-rv32gcv-nofm.c     |   4 +-
 .../riscv/rvv/autovec/binop/vdiv-rv32gcv.c    |   4 +-
 .../rvv/autovec/binop/vdiv-rv64gcv-nofm.c     |   4 +-
 .../riscv/rvv/autovec/binop/vdiv-rv64gcv.c    |   4 +-
 .../riscv/rvv/autovec/vx_vf/vx-1-u16.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-1-u32.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-1-u64.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-1-u8.c         |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-2-u16.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-2-u32.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-2-u64.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-2-u8.c         |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-3-u16.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-3-u32.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-3-u64.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-3-u8.c         |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-4-u16.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-4-u32.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-4-u64.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-4-u8.c         |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-5-u16.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-5-u32.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-5-u64.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-5-u8.c         |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-6-u16.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-6-u32.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-6-u64.c        |   2 +
 .../riscv/rvv/autovec/vx_vf/vx-6-u8.c         |   2 +
 .../riscv/rvv/autovec/vx_vf/vx_binary_data.h  | 196 ++++++++++++++++++
 .../rvv/autovec/vx_vf/vx_vdiv-run-1-u16.c     |  15 ++
 .../rvv/autovec/vx_vf/vx_vdiv-run-1-u32.c     |  15 ++
 .../rvv/autovec/vx_vf/vx_vdiv-run-1-u64.c     |  15 ++
 .../rvv/autovec/vx_vf/vx_vdiv-run-1-u8.c      |  15 ++
 36 files changed, 315 insertions(+), 9 deletions(-)
 create mode 100644 
gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vdiv-run-1-u16.c
 create mode 100644 
gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vdiv-run-1-u32.c
 create mode 100644 
gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vdiv-run-1-u64.c
 create mode 100644 
gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx_vdiv-run-1-u8.c

-- 
2.43.0