https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121983
--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jeff Law <l...@gcc.gnu.org>: https://gcc.gnu.org/g:cc0959221ee2a6f17dda6335bb1615207e2c8e51 commit r16-3987-gcc0959221ee2a6f17dda6335bb1615207e2c8e51 Author: Jeff Law <j...@ventanamicro.com> Date: Fri Sep 19 09:17:01 2025 -0600 [RISC-V][PR target/121983] Fix unprotected REGNO invocation So this was a naked REGNO usage, which of course blows up if RTL checking is enabled and something else sneaks in (SUBREG). Thankfully it never results in incorrect code, though I could theorize it could cause a bootstrap comparison failure in the "right" circumstances. Bootstrapped & regression tested on the Pioneer. Also regression tested on riscv64-elf and riscv32-elf. I'll push to the trunk once pre-commit CI is done. jeff PR target/121983 gcc/ * config/riscv/riscv.cc (riscv_macro_fusion_pair_p): Make sure object is a REG before asking for its REGNO. Fix a trivial whitespace nit. gcc/testsuite/ * gcc.target/riscv/pr121983.c: New test.
