When compiling a 5 MB C file with 65337 functions, gcc takes over 700 MB of ram
compiling the file to assembly. Files with fewer functions (32769 and 16385)
take exponentially less time. A workaround is to split the file into multiple c
files and compile into intermediate files seperately.
tinycc aka tcc takes 0.5 seconds to compile the same file.
I'd be happy to provide more information and justifications for such a large
number of functions, but I assume that the bug can be fixed without it.
--
Summary: GCC uses a lot of RAM when compiling a large numbers of
functions
Product: gcc
Version: 4.3.4
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jvoss at altsci dot com
GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44563
