[Bug libstdc++/58437] [4.7/4.8/4.9 Regression] Sorting value in reverse order is much slower compare to gcc44

2013-09-23 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58437 --- Comment #26 from Tammy Hsu --- Thanks a lot for the patch. It addresses the issue on the standalone test and shows also in our real tool test results. With this patch, the major degradations are gone. Compared to gcc445, there is a slight over

[Bug libstdc++/58437] [4.7/4.8/4.9 Regression] Sorting value in reverse order is much slower compare to gcc44

2013-09-19 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58437 --- Comment #22 from Tammy Hsu --- Thanks a lot. We will test it out with our real application. Just want to do things right, the patch is the one described in Attachment 30861. And I just need to patch the /include/c++/4.8.1/bits/stl_algo.h, don'

[Bug libstdc++/58437] [4.7/4.8/4.9 Regression] Sorting value in reverse order is much slower compare to gcc44

2013-09-19 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58437 --- Comment #24 from Tammy Hsu --- Yes, it is a question. And thank you for the answer... :-)

[Bug libstdc++/58437] [4.7/4.8/4.9 Regression] Sorting value in reverse order is much slower compare to gcc44

2013-09-17 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58437 --- Comment #9 from Tammy Hsu --- Marc/Paolo/Chris, Thanks a lot for your help. It's awesome to see so many activities within hours after submitting the bug. Thanks, Tammy

[Bug libstdc++/58437] [4.7/4.8/4.9 Regression] Sorting value in reverse order is much slower compare to gcc44

2013-09-17 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58437 --- Comment #11 from Tammy Hsu --- Jeffrey, It's weird indeed. We are still using gcc445 for our production releases and are in the process of evaluating gcc481/gcc473. The performance tests show slowness in some tests I also don't have gcc4

[Bug target/58208] deque 32-bit "-O3" bug

2013-09-16 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58208 --- Comment #13 from Tammy Hsu --- Hi Mikael, My last comment probably is not clear enough. The import (testcase) I built on RHEL 5.5 crashes on RHEL 5.5, but if I ran it on Fedora 19, it works. So if you take the import you built on CentOS 5.8

[Bug c++/58437] New: Sorting value in reverse order is much slower compare to gcc44

2013-09-16 Thread tammy at Cadence dot COM
Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: tammy at Cadence dot COM For the following testcase: === #include #include using namespace std; int main() { const size_t num

[Bug target/58208] deque 32-bit "-O3" bug

2013-08-28 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58208 --- Comment #12 from Tammy Hsu --- I installed the required i686 rpms on the Fedora 19 system, and the testcase works without crash (using the /bin/g++). I then built gcc481 on the Fedora 19 system, the testcase also works fine when I compile/lin

[Bug target/58208] deque 32-bit "-O3" bug

2013-08-26 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58208 --- Comment #11 from Tammy Hsu --- Thank you. Yes, on the fedora 19 systems, I don't have these 3 i686 rpms installed. I will add them. Do you have any comments on the crash issue we have on CentOS 5.8 or RHEL 5.5/RHEL 6.3 after building gcc481

[Bug target/58208] deque 32-bit "-O3" bug

2013-08-26 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58208 --- Comment #9 from Tammy Hsu --- I tried to run the g++ build on RHEL 5.5 on a RHEL 6.3 system, import seg fault. I then tried to rebuild gcc481 on RHEL 6.3 and rerun the testcase, it still crash. The glibc on RHEL 6.3 is glibc-2.12-1.80.el6.x8

[Bug target/58208] deque 32-bit "-O3" bug

2013-08-25 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58208 --- Comment #8 from Tammy Hsu --- Thanks a lot for trying rebuilding twice!! you don't think it is caused by optimization code? if we use "-O2" or "-O3 -fno-tree-vectorize" then it won't seg fault

[Bug target/58208] deque 32-bit "-O3" bug

2013-08-24 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58208 --- Comment #4 from Tammy Hsu --- Sorry, I forgot to mention that I need to set LD_LIBRARY_PATH to "." to run import. I build the gcc473 and gcc481 by using the same configuration and on the same RHEL 5.5 system, however the gcc473 version works a

[Bug target/58208] deque 32-bit "-O3" bug

2013-08-23 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58208 Tammy Hsu changed: What|Removed |Added Severity|normal |major --- Comment #2 from Tammy Hsu --- Can

[Bug c++/58208] New: deque 32-bit "-O3" bug

2013-08-20 Thread tammy at Cadence dot COM
Assignee: unassigned at gcc dot gnu.org Reporter: tammy at Cadence dot COM The following testcase works with gcc473, but crash with gcc481: $ cat main.C int main () {} $ cat qt.C #include #include std::deque l1; $ cat build.orig #!/bin/csh -fex set GCCVER = /home/tammy/gcc481 seten

[Bug c/54896] Some optimization slowness with GCC 4.7.2

2012-10-10 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54896 --- Comment #2 from Tammy Hsu 2012-10-10 22:09:04 UTC --- Created attachment 28416 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28416 This can be used to generate BigData.c

[Bug c/54896] New: Some optimization slowness with GCC 4.7.2

2012-10-10 Thread tammy at Cadence dot COM
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54896 Bug #: 54896 Summary: Some optimization slowness with GCC 4.7.2 Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: normal