[Bug c++/50771] redundant argument passing code (x64) + inefficient use of stack space

[crusader.mike at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50771

--- Comment #2 from CM <crusader.mike at gmail dot com> 2011-10-18 18:20:18 UTC ---
It is RedHat Linux 64bit, platform x86_64:

emdhouapd07 (energy2) hoops: uname -a
Linux emdhouapd07 2.6.18-238.9.1.el5 #1 SMP Fri Mar 18 12:42:39 EDT 2011 x86_64
x86_64 x86_64 GNU/Linux


> Because the ABI says so.

Which question this statement answers?