Hi Yangyu, This looks great with what we discussed previously.
I have a very similar patch that implements a slightly stronger optimisation that I was about to send. It makes use of information if the caller is versioned. I will share this with you shortly and we can work out what we wish to use?
Kind regards, Alfie On 14/04/2025 10:00, Yangyu Chen wrote:
This patchset implements a new feature to redirect to a specific target based on the TARGET_VERSION_COMPATIBLE macro. This allows for more precise FMV callee selection and better performance for certain architectures. Especially for those callee that needs to be inlined, this patchset can help to avoid unnecessary function calls and improve performance. The idea comes from the previous dicussion on the gcc-patches mailing list [1]. Additionally, this patchset also includes a implementation of TARGET_VERSION_COMPATIBLE for RISC-V, which allows for more flexibility in selecting the target version for RISC-V architectures. [1] https://patchwork.sourceware.org/comment/197172/ Yangyu Chen (3): Redirect to specific target based on TARGET_VERSION_COMPATIBLE RISC-V: Split parse_features_for_version with cl_target_option returned RISC-V: Implement TARGET_VERSION_COMPATIBLE gcc/config/riscv/riscv.cc | 84 ++++++++++++++++++++++++++++----------- gcc/doc/tm.texi | 7 ++++ gcc/doc/tm.texi.in | 2 + gcc/multiple_target.cc | 58 +++++++++++++++++---------- gcc/target.def | 12 ++++++ 5 files changed, 118 insertions(+), 45 deletions(-)
