This patch series presents gcc implementation of the XTheadVector extension [1].
[1] https://github.com/T-head-Semi/thead-extension-spec/ For some vector patterns that cannot be avoided, we use "!TARGET_XTHEADVECTOR" to disable them in order not to generate instructions that xtheadvector does not support, causing 36 changes in vector.md. For the th. prefix issue, we use current_output_insn and the ASM_OUTPUT_OPCODE hook instead of directly modifying patterns in vector.md. We have run the GCC test suite and can confirm that there are no regressions. All the test results can be found in the following links, Run without xtheadvector: https://gcc.gnu.org/pipermail/gcc-testresults/2023-December/803686.html Run with xtheadvector: https://gcc.gnu.org/pipermail/gcc-testresults/2023-December/803687.html Furthermore, we have run the tests in https://github.com/riscv-non-isa/rvv-intrinsic-doc/tree/main/examples, and all the tests passed. Co-authored-by: Jin Ma <ji...@linux.alibaba.com> Co-authored-by: Xianmiao Qu <cooper...@linux.alibaba.com> Co-authored-by: Christoph Müllner <christoph.muell...@vrull.eu> RISC-V: Refactor riscv-vector-builtins-bases.cc RISC-V: Change csr_operand into vector_length_operand for vsetvl patterns RISC-V: Introduce XTheadVector as a subset of V1.0.0 RISC-V: Adds the prefix "th." for the instructions of XTheadVector RISC-V: Handle differences between XTheadvector and Vector RISC-V: Add support for xtheadvector-specific intrinsics RISC-V: ... --- gcc/common/config/riscv/riscv-common.cc | 23 + gcc/config.gcc | 4 +- gcc/config/riscv/autovec.md | 2 +- gcc/config/riscv/predicates.md | 8 +- gcc/config/riscv/riscv-c.cc | 8 +- gcc/config/riscv/riscv-protos.h | 1 + gcc/config/riscv/riscv-string.cc | 3 + gcc/config/riscv/riscv-v.cc | 13 +- .../riscv/riscv-vector-builtins-bases.cc | 18 +- .../riscv/riscv-vector-builtins-bases.h | 19 + .../riscv/riscv-vector-builtins-shapes.cc | 149 + .../riscv/riscv-vector-builtins-shapes.h | 3 + .../riscv/riscv-vector-builtins-types.def | 120 + gcc/config/riscv/riscv-vector-builtins.cc | 315 +- gcc/config/riscv/riscv-vector-builtins.h | 5 +- gcc/config/riscv/riscv-vector-switch.def | 150 +- gcc/config/riscv/riscv.cc | 46 +- gcc/config/riscv/riscv.h | 4 + gcc/config/riscv/riscv.opt | 2 + gcc/config/riscv/riscv_th_vector.h | 49 + gcc/config/riscv/t-riscv | 16 + .../riscv/thead-vector-builtins-functions.def | 659 ++++ gcc/config/riscv/thead-vector-builtins.cc | 887 ++++++ gcc/config/riscv/thead-vector-builtins.h | 123 + gcc/config/riscv/thead-vector.md | 2827 +++++++++++++++++ gcc/config/riscv/vector-iterators.md | 186 +- gcc/config/riscv/vector.md | 44 +- .../riscv/predef-__riscv_th_v_intrinsic.c | 11 + .../gcc.target/riscv/rvv/base/abi-1.c | 2 +- .../gcc.target/riscv/rvv/base/pragma-1.c | 2 +- .../gcc.target/riscv/rvv/xtheadvector.c | 13 + .../riscv/rvv/xtheadvector/prefix.c | 12 + .../riscv/rvv/xtheadvector/vlb-vsb.c | 68 + .../riscv/rvv/xtheadvector/vlbu-vsb.c | 68 + .../riscv/rvv/xtheadvector/vlh-vsh.c | 68 + .../riscv/rvv/xtheadvector/vlhu-vsh.c | 68 + .../riscv/rvv/xtheadvector/vlw-vsw.c | 68 + .../riscv/rvv/xtheadvector/vlwu-vsw.c | 68 + gcc/testsuite/lib/target-supports.exp | 12 + 39 files changed, 5931 insertions(+), 213 deletions(-) create mode 100644 gcc/config/riscv/riscv_th_vector.h create mode 100644 gcc/config/riscv/thead-vector-builtins-functions.def create mode 100644 gcc/config/riscv/thead-vector-builtins.cc create mode 100644 gcc/config/riscv/thead-vector-builtins.h create mode 100644 gcc/config/riscv/thead-vector.md create mode 100644 gcc/testsuite/gcc.target/riscv/predef-__riscv_th_v_intrinsic.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector/prefix.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector/vlb-vsb.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector/vlbu-vsb.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector/vlh-vsh.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector/vlhu-vsh.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector/vlw-vsw.c create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/xtheadvector/vlwu-vsw.c
