https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112109
--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Robin Dapp <rd...@gcc.gnu.org>: https://gcc.gnu.org/g:2664964b2f695e947faea4c29dbddd3615cc4b0b commit r14-6340-g2664964b2f695e947faea4c29dbddd3615cc4b0b Author: Robin Dapp <rd...@ventanamicro.com> Date: Fri Dec 1 09:57:15 2023 +0100 RISC-V: Add vectorized strlen. This patch implements a vectorized strlen by re-using and slightly adjusting the rawmemchr implementation. Rawmemchr returns the address of the needle while strlen returns the difference between needle address and start address. As before, strlen expansion is guarded by -minline-strlen. While testing with -minline-strlen I encountered a vsetvl problem in memcpy-chk.c where we didn't insert a vsetvl at the proper spot (after a setjmp). This needs to be fixed separately and I figured I'd post this patch as-is. gcc/ChangeLog: PR target/112109 * config/riscv/riscv-protos.h (expand_rawmemchr): Add strlen parameter. * config/riscv/riscv-string.cc (riscv_expand_strlen): Call rawmemchr. (expand_rawmemchr): Add strlen handling. * config/riscv/riscv.md: Add TARGET_VECTOR to strlen expander. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/autovec/builtin/strlen-run.c: New test. * gcc.target/riscv/rvv/autovec/builtin/strlen.c: New test.
