search for: llvm_gcda_emit_function

...s built from the latest llvm/clang codebase. It worked for a while. But today, after I updated my local checkout, and re-build llvm, clang and compiler-rt, when I test my project again, I got the errors with undefined reference to 'llvm_gcda_start_file', 'llvm_gcda_emit_arcs', 'llvm_gcda_emit_function', and 'llvm_gcda_end_file'. I have searched the codebase, and have found the functions are defined in GCDAProfiling.c file, but not sure why this suddenly doesn't work for me. Anyone can give any suggestions? Thanks very much in advance. Qun -------------- next part -------------...

...llvm/clang codebase. > > It worked for a while. But today, after I updated my local checkout, and > re-build llvm, clang and compiler-rt, when I test my project again, I > got the errors with undefined reference to 'llvm_gcda_start_file', > 'llvm_gcda_emit_arcs', 'llvm_gcda_emit_function', and 'llvm_gcda_end_file'. > > I have searched the codebase, and have found the functions are defined > in GCDAProfiling.c file, but not sure why this suddenly doesn't work for me. > > Anyone can give any suggestions? Those symbols should be provided by compiler-rt...

...against? I am currently linking libprofile_rt.a. And I have noticed the differences that, if we do `nm libprofile_rt.a | grep llvm` with my old copy of the llvm/clang installation, I can see 00000000000005e0 T _llvm_gcda_emit_arcs 0000000000000b48 S _llvm_gcda_emit_arcs.eh 0000000000000430 T _llvm_gcda_emit_function 0000000000000aa8 S _llvm_gcda_emit_function.eh 00000000000006c0 T _llvm_gcda_end_file 0000000000000b98 S _llvm_gcda_end_file.eh 00000000000003d0 T _llvm_gcda_increment_indirect_counter 0000000000000a80 S _llvm_gcda_increment_indirect_counter.eh 0000000000000000 T _llvm_gcda_start_file 0000000000000...

...to work correctly with code using dlopen/dlclose to load and unload shared libraries. Each shared library must have its own copy of the following GCDA functions: - __gcov_flush - llvm_delete_flush_function_list - llvm_delete_writeout_function_list - llvm_gcda_emit_arcs - llvm_gcda_emit_function - llvm_gcda_end_file - llvm_gcda_increment_indirect_counter - llvm_gcda_start_file - llvm_gcda_summary_info - llvm_gcov_init - llvm_register_flush_function - llvm_register_writeout_function - llvm_writeout_files Defining these function as "hidden"...

...d the differences that, if we do >> >> `nm libprofile_rt.a | grep llvm` >> >> with my old copy of the llvm/clang installation, I can see >> >> 00000000000005e0 T _llvm_gcda_emit_arcs >> 0000000000000b48 S _llvm_gcda_emit_arcs.eh >> 0000000000000430 T _llvm_gcda_emit_function >> 0000000000000aa8 S _llvm_gcda_emit_function.eh >> 00000000000006c0 T _llvm_gcda_end_file >> 0000000000000b98 S _llvm_gcda_end_file.eh >> 00000000000003d0 T _llvm_gcda_increment_indirect_counter >> 0000000000000a80 S _llvm_gcda_increment_indirect_counter.eh >>...

...t.a. > > And I have noticed the differences that, if we do > > `nm libprofile_rt.a | grep llvm` > > with my old copy of the llvm/clang installation, I can see > > 00000000000005e0 T _llvm_gcda_emit_arcs > 0000000000000b48 S _llvm_gcda_emit_arcs.eh > 0000000000000430 T _llvm_gcda_emit_function > 0000000000000aa8 S _llvm_gcda_emit_function.eh > 00000000000006c0 T _llvm_gcda_end_file > 0000000000000b98 S _llvm_gcda_end_file.eh > 00000000000003d0 T _llvm_gcda_increment_indirect_counter > 0000000000000a80 S _llvm_gcda_increment_indirect_counter.eh > 0000000000000000 T _llvm...

...t; `nm libprofile_rt.a | grep llvm` >>>> >>>> with my old copy of the llvm/clang installation, I can see >>>> >>>> 00000000000005e0 T _llvm_gcda_emit_arcs >>>> 0000000000000b48 S _llvm_gcda_emit_arcs.eh >>>> 0000000000000430 T _llvm_gcda_emit_function >>>> 0000000000000aa8 S _llvm_gcda_emit_function.eh >>>> 00000000000006c0 T _llvm_gcda_end_file >>>> 0000000000000b98 S _llvm_gcda_end_file.eh >>>> 00000000000003d0 T _llvm_gcda_increment_indirect_counter >>>> 0000000000000a80 S _llvm_gcda...

...>>> >>> `nm libprofile_rt.a | grep llvm` >>> >>> with my old copy of the llvm/clang installation, I can see >>> >>> 00000000000005e0 T _llvm_gcda_emit_arcs >>> 0000000000000b48 S _llvm_gcda_emit_arcs.eh >>> 0000000000000430 T _llvm_gcda_emit_function >>> 0000000000000aa8 S _llvm_gcda_emit_function.eh >>> 00000000000006c0 T _llvm_gcda_end_file >>> 0000000000000b98 S _llvm_gcda_end_file.eh >>> 00000000000003d0 T _llvm_gcda_increment_indirect_counter >>> 0000000000000a80 S _llvm_gcda_increment_indirect_...

...grep llvm` >>>>> >>>>> with my old copy of the llvm/clang installation, I can see >>>>> >>>>> 00000000000005e0 T _llvm_gcda_emit_arcs >>>>> 0000000000000b48 S _llvm_gcda_emit_arcs.eh >>>>> 0000000000000430 T _llvm_gcda_emit_function >>>>> 0000000000000aa8 S _llvm_gcda_emit_function.eh >>>>> 00000000000006c0 T _llvm_gcda_end_file >>>>> 0000000000000b98 S _llvm_gcda_end_file.eh >>>>> 00000000000003d0 T _llvm_gcda_increment_indirect_counter >>>>> 000000000...

...>>> >>>>>> with my old copy of the llvm/clang installation, I can see >>>>>> >>>>>> 00000000000005e0 T _llvm_gcda_emit_arcs >>>>>> 0000000000000b48 S _llvm_gcda_emit_arcs.eh >>>>>> 0000000000000430 T _llvm_gcda_emit_function >>>>>> 0000000000000aa8 S _llvm_gcda_emit_function.eh >>>>>> 00000000000006c0 T _llvm_gcda_end_file >>>>>> 0000000000000b98 S _llvm_gcda_end_file.eh >>>>>> 00000000000003d0 T _llvm_gcda_increment_indirect_counter >>>&g...

...fferences that, if we do > > > > `nm libprofile_rt.a | grep llvm` > > > > with my old copy of the llvm/clang installation, I can see > > > > 00000000000005e0 T _llvm_gcda_emit_arcs > > 0000000000000b48 S _llvm_gcda_emit_arcs.eh > > 0000000000000430 T _llvm_gcda_emit_function > > 0000000000000aa8 S _llvm_gcda_emit_function.eh > > 00000000000006c0 T _llvm_gcda_end_file > > 0000000000000b98 S _llvm_gcda_end_file.eh > > 00000000000003d0 T _llvm_gcda_increment_indirect_counter > > 0000000000000a80 S _llvm_gcda_increment_indirect_counter.eh >...