[PATCH 2/8] [gdb/testsuite] Speed up MACRO_AT_* calls

[Tom de Vries]

On 10/25/21 12:29 PM, Tom de Vries via Gdb-patches wrote:
> Currently, for each MACRO_AT_range or MACRO_AT_func in dwarf assembly the
> following is done:
> - $srcdir/$subdir/$srcfile is compiled to an executable using
>   flags "debug"
> - a new gdb instance is started
> - the new executable is loaded.
> 
> This is inefficient, because the executable is identical within the same
> Dwarf::assemble call.
> 
> Share the gdb instance in the same Dwarf::assemble invocation, which speeds
> up a make check with RUNTESTFLAGS like this to catch all dwarf assembly
> test-cases:
> ...
> rtf=$(echo $(cd src/gdb/testsuite; find gdb.* -type f -name "*.exp" \
>       | xargs grep -l Dwarf::assemble))
> ...
> from:
> ...
> real    1m39.916s
> user    1m25.668s
> sys     0m21.377s
> ...
> to:
> ...
> real    1m29.512s
> user    1m17.316s
> sys     0m19.100s
> ...
> 

I've rewritten this patch to not use the finally proc introduced in 1/8,
and pushed the series starting this patch.

Thanks,
- Tom