Segmentation fault and Assembler messages while compiling OpenCV with Branch rvv-intrinsic #701
Description
I used some rvv intrinsics while developing in OpenCV. And I tried to use the branch rvv-intrinsics to compile OpenCV. Two errors have been encountered so far.
First:
In file included from /home/git/opencv/modules/core/src/mathfuncs_core.dispatch.cpp:7:
/home/git/opencv/modules/core/src/mathfuncs_core.simd.hpp:76:8: internal compiler error: Segmentation fault
76 | struct v_atan_f32
| ^~~~~~~~~~
0xfb1dbf crash_signal
../.././riscv-gcc/gcc/toplev.c:328
0x127ec43 selt
../.././riscv-gcc/gcc/wide-int.cc:404
0x127ec43 wi::lts_p_large(long const*, unsigned int, unsigned int, long const*, unsigned int)
../.././riscv-gcc/gcc/wide-int.cc:480
0x98a486 bool wi::lts_p<generic_wide_int<wi::extended_tree<192> >, generic_wide_int<wi::extended_tree<192> > >(generic_wide_int<wi::extended_tree<192> > const&, generic_wide_int<wi::extended_tree<192> > const&)
../.././riscv-gcc/gcc/wide-int.h:1925
0x98a486 wi::binary_traits<generic_wide_int<wi::extended_tree<192> >, generic_wide_int<wi::extended_tree<192> >, wi::int_traits<generic_wide_int<wi::extended_tree<192> > >::precision_type, wi::int_traits<generic_wide_int<wi::extended_tree<192> > >::precision_type>::signed_predicate_result operator< <generic_wide_int<wi::extended_tree<192> >, generic_wide_int<wi::extended_tree<192> > >(generic_wide_int<wi::extended_tree<192> > const&, generic_wide_int<wi::extended_tree<192> > const&)
../.././riscv-gcc/gcc/wide-int.h:3248
0x98a486 tree_int_cst_lt(tree_node const*, tree_node const*)
../.././riscv-gcc/gcc/tree.h:6099
0x98a486 walk_subobject_offsets
../.././riscv-gcc/gcc/cp/class.c:3946
0x994d36 layout_class_type
../.././riscv-gcc/gcc/cp/class.c:6535
0x994d36 finish_struct_1(tree_node*)
../.././riscv-gcc/gcc/cp/class.c:7241
0x996db4 finish_struct(tree_node*, tree_node*)
../.././riscv-gcc/gcc/cp/class.c:7520
0xa523c1 cp_parser_class_specifier_1
../.././riscv-gcc/gcc/cp/parser.c:23881
0xa54039 cp_parser_class_specifier
../.././riscv-gcc/gcc/cp/parser.c:24180
0xa54039 cp_parser_type_specifier
../.././riscv-gcc/gcc/cp/parser.c:17711
0xa54bd1 cp_parser_decl_specifier_seq
../.././riscv-gcc/gcc/cp/parser.c:14359
0xa556e4 cp_parser_simple_declaration
../.././riscv-gcc/gcc/cp/parser.c:13613
0xa799b9 cp_parser_declaration
../.././riscv-gcc/gcc/cp/parser.c:13433
0xa7a59c cp_parser_declaration_seq_opt
../.././riscv-gcc/gcc/cp/parser.c:13309
0xa7a59c cp_parser_namespace_body
../.././riscv-gcc/gcc/cp/parser.c:19717
0xa7a59c cp_parser_namespace_definition
../.././riscv-gcc/gcc/cp/parser.c:19695
0xa79a8f cp_parser_declaration
../.././riscv-gcc/gcc/cp/parser.c:13413
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
modules/core/CMakeFiles/opencv_core.dir/build.make:577: recipe for target 'modules/core/CMakeFiles/opencv_core.dir/src/mathfuncs_core.dispatch.cpp.o' failed
Second:
/tmp/ccyu6Srz.s: Assembler messages:
/tmp/ccyu6Srz.s:32785: Error: unrecognized opcode `vqmaccu.vv v4,v2,v1'
/tmp/ccyu6Srz.s:33036: Error: unrecognized opcode `vqmacc.vv v4,v2,v1'
/tmp/ccyu6Srz.s:33285: Error: unrecognized opcode `vqmaccu.vv v4,v2,v1'
/tmp/ccyu6Srz.s:33523: Error: unrecognized opcode `vqmacc.vv v4,v2,v1'
modules/core/CMakeFiles/opencv_core.dir/build.make:590: recipe for target 'modules/core/CMakeFiles/opencv_core.dir/src/matmul.dispatch.cpp.o' failed
This seems to be problems with the toolchain itself, right?
Steps to compile OpenCV:
git clone git@github.com:joy2myself/opencv.git
cd opencv
git checkout rvv
mkdir build && cd build
cmake -DCMAKE_TOOLCHAIN_FILE=../platforms/linux/riscv64-gcc.toolchain.cmake ../
make -k
Suppose the toolchain with branch rvv-intrinsic is installed in /opt/RISCV. If not, you may need edit opencv/platforms/linux/riscv64-gcc.toolchain.cmake.