This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug regression/16266] [3.5 regression] gcc.dg/c99-intconst-1.c compilation is very slow
- From: "joern dot rennecke at superh dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 29 Jun 2004 16:05:56 -0000
- Subject: [Bug regression/16266] [3.5 regression] gcc.dg/c99-intconst-1.c compilation is very slow
- References: <20040629130803.16266.amylaar@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From joern dot rennecke at superh dot com 2004-06-29 16:05 -------
Subject: Re: [3.5 regression] gcc.dg/c99-intconst-1.c compilation is very slow
>
>
> ------- Additional Comments From reichelt at gcc dot gnu dot org 2004-06-29 14:38 -------
> Maybe the 3.5 version is using wrong parameters for the garbage collection.
> 3.4 uses: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
> 3.5 uses: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
>
> Could you test 3.5 with the same parameters as 3.4?
That doesn't seem to make any noticable difference:
bash-2.05$ time /swbuild/nightly/2004-06-28/sh-elf/gcc/cc1 -v -iprefix /swbuild
/nightly/2004-06-28/sh-elf/gcc/../lib/gcc/sh-elf/3.5.0/ -isystem /swbuild/nightl
y/2004-06-28/sh-elf/gcc/include -DSTACK_SIZE=16384 -isystem /swbuild/nightly/200
4-06-28/sh-elf/sh-elf/./newlib/targ-include -isystem /swbuild/nightly/2004-06-28
/srcw/newlib/libc/include /swbuild/nightly/2004-06-28/srcw/gcc/testsuite/gcc.dg/
c99-intconst-1.c -dumpbase c99-intconst-1.c -auxbase-strip c99-intconst-1.s -pe
dantic-errors -std=iso9899:1999 -version -o c99-intconst-1.s --param ggc-min-exp
and=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/swbuild/nightly/2004-06-28/sh-elf/gcc/../lib/gc
c/sh-elf/3.5.0/include"
ignoring nonexistent directory "/swbuild/nightly/2004-06-28/sh-elf/gcc/../lib/gc
c/sh-elf/3.5.0/../../../../sh-elf/sys-include"
ignoring nonexistent directory "/swbuild/nightly/2004-06-28/sh-elf/gcc/../lib/gc
c/sh-elf/3.5.0/../../../../sh-elf/include"
ignoring nonexistent directory "/usr/local/lib/gcc/sh-elf/3.5.0/include"
ignoring nonexistent directory "/usr/local/lib/../sh-elf/sys-include"
ignoring nonexistent directory "/usr/local/lib/../sh-elf/include"
#include "..." search starts here:
#include <...> search starts here:
/swbuild/nightly/2004-06-28/sh-elf/gcc/include
/swbuild/nightly/2004-06-28/sh-elf/sh-elf/./newlib/targ-include
/swbuild/nightly/2004-06-28/srcw/newlib/libc/include
End of search list.
GNU C version 3.5.0 20040628 (experimental) (sh-elf)
compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-98).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
options passed: -v -iprefix -isystem -DSTACK_SIZE=16384 -isystem -isystem
-auxbase-strip -pedantic-errors -std=iso9899:1999 --param --param
options enabled: -falign-loops -fargument-alias -fbranch-count-reg
-fcommon -feliminate-unused-debug-types -ffunction-cse -fgcse-las
-fgcse-lm -fgcse-sm -fident -fkeep-static-consts -fleading-underscore
-floop-optimize2 -fmath-errno -fpeephole -freg-struct-return
-fsched-interblock -fsched-spec -fsched-stalled-insns-dep -fvar-tracking
-fweb -fzero-initialized-in-bss -m1
foo
Execution times (seconds)
CFG verifier : 0.59 ( 0%) usr 0.00 ( 0%) sys 0.58 ( 0%) wall
trivially dead code : 0.09 ( 0%) usr 0.00 ( 0%) sys 0.09 ( 0%) wall
life analysis : 0.31 ( 0%) usr 0.03 ( 1%) sys 0.34 ( 0%) wall
life info update : 0.15 ( 0%) usr 0.00 ( 0%) sys 0.15 ( 0%) wall
register scan : 0.14 ( 0%) usr 0.01 ( 0%) sys 0.15 ( 0%) wall
rebuild jump labels : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.05 ( 0%) wall
preprocessing : 1.19 ( 0%) usr 0.14 ( 5%) sys 1.25 ( 0%) wall
lexical analysis : 0.86 ( 0%) usr 0.41 (15%) sys 1.17 ( 0%) wall
parser : 2.29 ( 1%) usr 0.29 (11%) sys 2.74 ( 1%) wall
tree gimplify : 0.37 ( 0%) usr 0.01 ( 0%) sys 0.37 ( 0%) wall
tree eh : 0.01 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
tree CFG construction : 0.02 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 0%) wall
tree STMT verifier : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
expand : 112.18 (44%) usr 0.15 ( 6%) sys 112.52 (44%) wall
jump : 0.04 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
flow analysis : 0.07 ( 0%) usr 0.00 ( 0%) sys 0.07 ( 0%) wall
local alloc : 2.58 ( 1%) usr 0.04 ( 1%) sys 2.60 ( 1%) wall
global alloc : 128.85 (51%) usr 0.65 (24%) sys 129.50 (51%) wall
flow 2 : 0.05 ( 0%) usr 0.00 ( 0%) sys 0.04 ( 0%) wall
machine dep reorg : 1.03 ( 0%) usr 0.01 ( 0%) sys 1.05 ( 0%) wall
shorten branches : 0.50 ( 0%) usr 0.00 ( 0%) sys 0.50 ( 0%) wall
final : 0.67 ( 0%) usr 0.93 (35%) sys 1.71 ( 1%) wall
symout : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 0%) wall
rest of compilation : 0.83 ( 0%) usr 0.00 ( 0%) sys 0.84 ( 0%) wall
TOTAL : 252.92 2.67 255.87
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --disable-checking to disable checks.
real 4m15.363s
user 4m12.920s
sys 0m2.690s
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16266