[PATCH 0/5] Recognize Zicond extension

[Xiao Zeng <zengxiao@eswincomputing.com>]

Hi all RISC-V folks:

This series of patches completes support for the riscv architecture's
Zicond standard extension instruction set.

Currently, Zicond is in a frozen state.

See the Zicond specification for details:
https://github.com/riscv/riscv-zicond/releases/download/v1.0-rc2/riscv-zicond-v1.0-rc2.pdf

Prior to this, other community members have also done related work, as shown in: 
https://gcc.gnu.org/pipermail/gcc-patches/2023-February/611767.html
https://sourceware.org/pipermail/binutils/2023-January/125773.html

Xiao Zeng (5):
  [RISC-V] Recognize Zicond extension
  [RISC-V] Generate Zicond instruction for basic semantics
  [RISC-V] Generate Zicond instruction for select pattern with condition
    eq or neq to 0
  [RISC-V] Generate Zicond instruction for select pattern with condition
    eq or neq to non-zero
  [RISC-V] Generate Zicond instruction for conditional execution

 gcc/common/config/riscv/riscv-common.cc       |   3 +
 gcc/config/riscv/riscv-opts.h                 |   3 +
 gcc/config/riscv/riscv.cc                     | 141 +++++
 gcc/config/riscv/riscv.md                     |   3 +-
 gcc/config/riscv/zicond.md                    |  84 +++
 gcc/ifcvt.cc                                  | 251 ++++++++
 gcc/testsuite/gcc.target/riscv/attribute-20.c |   6 +
 gcc/testsuite/gcc.target/riscv/attribute-21.c |   6 +
 ...ionalArithmetic_compare_0_return_imm_reg.c | 553 +++++++++++++++++
 ...ionalArithmetic_compare_0_return_reg_reg.c | 585 ++++++++++++++++++
 ...nalArithmetic_compare_imm_return_imm_reg.c | 297 +++++++++
 ...nalArithmetic_compare_imm_return_reg_reg.c | 297 +++++++++
 ...nalArithmetic_compare_reg_return_imm_reg.c | 297 +++++++++
 ...nalArithmetic_compare_reg_return_reg_reg.c | 329 ++++++++++
 .../riscv/zicond-primitiveSemantics.c         |  49 ++
 .../zicond-primitiveSemantics_compare_imm.c   |  57 ++
 ...mitiveSemantics_compare_imm_return_0_imm.c |  73 +++
 ...tiveSemantics_compare_imm_return_imm_imm.c |  73 +++
 ...tiveSemantics_compare_imm_return_imm_reg.c |  65 ++
 ...tiveSemantics_compare_imm_return_reg_reg.c |  65 ++
 .../zicond-primitiveSemantics_compare_reg.c   |  65 ++
 ...mitiveSemantics_compare_reg_return_0_imm.c |  73 +++
 ...tiveSemantics_compare_reg_return_imm_imm.c |  73 +++
 ...tiveSemantics_compare_reg_return_imm_reg.c |  65 ++
 ...tiveSemantics_compare_reg_return_reg_reg.c |  77 +++
 .../zicond-primitiveSemantics_return_0_imm.c  |  65 ++
 ...zicond-primitiveSemantics_return_imm_imm.c |  73 +++
 ...zicond-primitiveSemantics_return_imm_reg.c |  65 ++
 ...zicond-primitiveSemantics_return_reg_reg.c |  65 ++
 29 files changed, 3857 insertions(+), 1 deletion(-)
 create mode 100644 gcc/config/riscv/zicond.md
 create mode 100644 gcc/testsuite/gcc.target/riscv/attribute-20.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/attribute-21.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-conditionalArithmetic_compare_0_return_imm_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-conditionalArithmetic_compare_0_return_reg_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-conditionalArithmetic_compare_imm_return_imm_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-conditionalArithmetic_compare_imm_return_reg_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-conditionalArithmetic_compare_reg_return_imm_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-conditionalArithmetic_compare_reg_return_reg_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_imm.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_imm_return_0_imm.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_imm_return_imm_imm.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_imm_return_imm_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_imm_return_reg_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_reg_return_0_imm.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_reg_return_imm_imm.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_reg_return_imm_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_compare_reg_return_reg_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_return_0_imm.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_return_imm_imm.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_return_imm_reg.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/zicond-primitiveSemantics_return_reg_reg.c

-- 
2.17.1