[Bug tree-optimization/46590] long compile time with -O2 and many loops

[tkoenig at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46590

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |memory-hog

--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2010-11-21 18:49:20 UTC ---
Yes, this is a memory hog as well:

time ~/libexec/gcc/x86_64-unknown-linux-gnu/4.6.0/f951 -O2 gener-max.f90
 MAIN__ main
Analyzing compilation unit
 {GC 183863k -> 103486k}Performing interprocedural optimizations
 <*free_lang_data> <visibility> <early_local_cleanups> {GC 156854k -> 151699k}
<whole-program> <ipa-profile> <cp> <inline> <pure-const> <static-var>Assembling
functions:
 MAIN__ {GC 281998k -> 189095k} {GC 393064k -> 341214k} {GC 554029k -> 337458k}
{GC 477071k -> 337199k} {GC 557246k -> 473808k}
f951: out of memory allocating 968552 bytes after a total of 4310765568 bytes

real    150m58.614s
user    150m16.083s
sys     0m11.924s
ig25@linux-fd1f:~/Krempel/Dep-c>