https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114988
--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-14 branch has been updated by Kito Cheng <k...@gcc.gnu.org>: https://gcc.gnu.org/g:68ef0c321a7df5899e1fbc3e20e75cce4233d6f7 commit r14-10469-g68ef0c321a7df5899e1fbc3e20e75cce4233d6f7 Author: Pan Li <pan2...@intel.com> Date: Sat May 11 15:25:28 2024 +0800 RISC-V: Bugfix ICE for RVV intrinisc vfw on _Float16 scalar For the vfw vx format RVV intrinsic, the scalar type _Float16 also requires the zvfh extension. Unfortunately, we only check the vector tree type and miss the scalar _Float16 type checking. For example: vfloat32mf2_t test_vfwsub_wf_f32mf2(vfloat32mf2_t vs2, _Float16 rs1, size_t vl) { return __riscv_vfwsub_wf_f32mf2(vs2, rs1, vl); } It should report some error message like zvfh extension is required instead of ICE for unreg insn. This patch would like to make up such kind of validation for _Float16 in the RVV intrinsic API. It will report some error like below when there is no zvfh enabled. error: built-in function '__riscv_vfwsub_wf_f32mf2(vs2, rs1, vl)' requires the zvfhmin or zvfh ISA extension Passed the rv64gcv fully regression tests, included c/c++/fortran. PR target/114988 gcc/ChangeLog: * config/riscv/riscv-vector-builtins.cc (validate_instance_type_required_extensions): New func impl to validate the intrinisc func type ops. (expand_builtin): Validate instance type before expand. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/base/pr114988-1.c: New test. * gcc.target/riscv/rvv/base/pr114988-2.c: New test. Signed-off-by: Pan Li <pan2...@intel.com> (cherry picked from commit 41b3cf262e61aee9d26380f1c820e0eaae740f50)
