https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113404
--- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Pan Li <pa...@gcc.gnu.org>: https://gcc.gnu.org/g:5134d3074ad7a462b4c8e2c0bc904b5ba40b7373 commit r14-7271-g5134d3074ad7a462b4c8e2c0bc904b5ba40b7373 Author: Juzhe-Zhong <juzhe.zh...@rivai.ai> Date: Tue Jan 16 11:04:49 2024 +0800 RISC-V: Report Sorry when users enable RVV in big-endian mode [PR113404] As PR113404 mentioned: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113404 We have ICE when we enable RVV in big-endian mode: during RTL pass: expand a-float-point-dynamic-frm-66.i:2:14: internal compiler error: in to_constant, at poly-int.h:588 0xab4c2c poly_int<2u, unsigned short>::to_constant() const /repo/gcc-trunk/gcc/poly-int.h:588 0xab4de1 poly_int<2u, unsigned short>::to_constant() const /repo/gcc-trunk/gcc/tree.h:4055 0xab4de1 default_function_arg_padding(machine_mode, tree_node const*) /repo/gcc-trunk/gcc/targhooks.cc:844 0x12e2327 locate_and_pad_parm(machine_mode, tree_node*, int, int, int, tree_node*, args_size*, locate_and_pad_arg_data*) /repo/gcc-trunk/gcc/function.cc:4061 0x12e2aca assign_parm_find_entry_rtl /repo/gcc-trunk/gcc/function.cc:2614 0x12e2c89 assign_parms /repo/gcc-trunk/gcc/function.cc:3693 0x12e59df expand_function_start(tree_node*) /repo/gcc-trunk/gcc/function.cc:5152 0x112fafb execute /repo/gcc-trunk/gcc/cfgexpand.cc:6739 Report users that we don't support RVV in big-endian mode for the following reasons: 1. big-endian in RISC-V is pretty rare case. 2. We didn't test RVV in big-endian and we don't have enough time to test it since it's stage 4 now. Naive disallow RVV in big-endian. Tested no regression, ok for trunk ? gcc/ChangeLog: PR target/113404 * config/riscv/riscv.cc (riscv_override_options_internal): Report sorry for RVV in big-endian mode. gcc/testsuite/ChangeLog: PR target/113404 * gcc.target/riscv/rvv/base/big_endian-1.c: New test. * gcc.target/riscv/rvv/base/big_endian-2.c: New test.
