https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92442
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |memory-hog
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-11-11
CC| |rguenth at gcc dot gnu.org
Component|c++ |debug
Summary|Compiling Boost.Spirit.X3 |Compiling Boost.Spirit.X3
|code uses exuberant amount |code uses exuberant amount
|of RAM |of RAM with -gsplit-dwarf
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I see 3GB of max-rss with 9.2.0 on x86_64-linux when omitting -gsplit-dwarf
which is 2GB less than clang?
> /usr/bin/time /space/rguenther/install/gcc-9.2/bin/g++ test.ii -S -g -fPIE
> -std=c++17 -pedantic-errors -Wextra -Wconversion -Winit-self
> -Wmissing-include-dirs -Wstrict-aliasing -Werror -ffunction-sections
> -fdata-sections -MD -MT test.o
55.33user 2.40system 1:04.57elapsed 89%CPU (0avgtext+0avgdata
2984564maxresident)k
> /usr/bin/time /space/rguenther/install/gcc-9.2/bin/g++ test.ii -S -g -fPIE
> -std=c++17 -pedantic-errors -Wextra -Wconversion -Winit-self
> -Wmissing-include-dirs -Wstrict-aliasing -Werror -ffunction-sections
> -fdata-sections -MD -MT test.o -gsplit-dwarf
109.28user 5.43system 2:05.93elapsed 91%CPU (0avgtext+0avgdata
7422548maxresident)k
0inputs+4904512outputs (0major+1867256minor)pagefaults 0swaps
so not sure why -gsplit-dwarf adds this amount of memory use... (looks like
a memory leak maybe...), but -gsplit-dwarf is poorly maintained.
