Created attachment 57088 [details] reduced testcase This has been reduced from gcc.target/riscv/rvv/base/float-point-dynamic-frm-66.c Compiler output: $ riscv64-unknown-linux-gnu-gcc -march=rv64gcv -mbig-endian --param=riscv-vector-abi a-float-point-dynamic-frm-66.i a-float-point-dynamic-frm-66.i: In function 'test_float_point_dynamic_frm': a-float-point-dynamic-frm-66.i:2:14: warning: ABI for the vector type is currently in experimental stage and may changes in the upcoming version of GCC. [-Wpsabi] 2 | vfloat32m1_t test_float_point_dynamic_frm(vfloat32m1_t) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. $ riscv64-unknown-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-riscv64/bin/riscv64-unknown-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r14-7255-20240115165927-g6c703b4eb68-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-unknown-linux-gnu/14.0.1/lto-wrapper Target: riscv64-unknown-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --with-cloog --with-ppl --with-isl --with-isa-spec=2.2 --with-sysroot=/usr/riscv64-unknown-linux-gnu --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=riscv64-unknown-linux-gnu --with-ld=/usr/bin/riscv64-unknown-linux-gnu-ld --with-as=/usr/bin/riscv64-unknown-linux-gnu-as --disable-multilib --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-r14-7255-20240115165927-g6c703b4eb68-checking-yes-rtl-df-extra-riscv64 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.0.1 20240115 (experimental) (GCC)
The master branch has been updated by Pan Li <panli@gcc.gnu.org>: https://gcc.gnu.org/g:5134d3074ad7a462b4c8e2c0bc904b5ba40b7373 commit r14-7271-g5134d3074ad7a462b4c8e2c0bc904b5ba40b7373 Author: Juzhe-Zhong <juzhe.zhong@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.