[llvm-dev] Slow debugger starts of LLVM tools

David Greene via llvm-dev llvm-dev at lists.llvm.org
Wed Jan 9 14:07:12 PST 2019

David Jones via llvm-dev <llvm-dev at lists.llvm.org> writes:

> GDB likes to load all symbols from shared libraries up front. And on
> x86_64 your main executable is really just another shared library.

Yes, but does gdb reload everything on each execution?  Every time I
execute "run" I see the same slow behavior.  Loading the symbols for
small tools like llvm-rc takes hardly any time at all (i.e. "file
llvm-rc" is almost instantaneous).  But executing it causes gdb to chew
up CPU cycles for a while.  Every time.


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