[Bug tree-optimization/43415] New: [4.4 regression] gcc takes unusually large amounts of memory and time to compile nested for loop at -O3
.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --disable-werror
--with-arch-32=i486 --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9)
--and the original source code (from which the above examples were minimized)
previously compiled on a Red Hat version of gcc 4.3.0 without complaint:
$ gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla
--enable-bootstrap --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --enable-plugin
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib
--with-cpu=generic --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.3.0 20080428 (Red Hat 4.3.0-8) (GCC)
--
Summary: [4.4 regression] gcc takes unusually large amounts of
memory and time to compile nested for loop at -O3
Product: gcc
Version: 4.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: wlam at kosmix dot com
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43415
[Bug tree-optimization/43416] New: [4.4 regression] internal compiler error in C++ template instantiations at -O3
I came across some code that previously compiled at -O3 without complaint on gcc version 4.3.0 20080428 (Red Hat 4.3.0-8) and gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9), but triggered a segmentation fault on gcc 4.4.3. After minimization, here is the segmentation fault: $ /net/test-hsa014/wlam/local/gcc-4.4.3/bin/gcc -Wfatal-errors -c -O3 -Wall foo.cc foo.cc: In member function void TypeRegistry::registerType(int, const ValueType&) [with ValueType = int (*)()]: foo.cc:119: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. $ /net/test-hsa014/wlam/local/gcc-4.4.3/bin/g++ -v Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.4.3/configure --prefix=/net/test-hsa014/wlam/local/gcc-4.4.3 --disable-multilib Thread model: posix gcc version 4.4.3 (GCC) (built from the GNU source distribution, though -- Summary: [4.4 regression] internal compiler error in C++ template instantiations at -O3 Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: wlam at kosmix dot com GCC build triplet: x86_64-redhat-linux GCC host triplet: x86_64-redhat-linux GCC target triplet: x86_64-redhat-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43416
[Bug tree-optimization/43416] [4.4 regression] internal compiler error in C++ template instantiations at -O3
--- Comment #1 from wlam at kosmix dot com 2010-03-18 03:11 --- Created an attachment (id=20137) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20137&action=view) Minimized C++ source causing segmentation fault in gcc 4.4.3 at -O3 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43416
[Bug tree-optimization/43416] [4.4 regression] internal compiler error in C++ template instantiations at -O3
--- Comment #2 from wlam at kosmix dot com 2010-03-18 03:14 --- Oops, the description is truncated: (built from the GNU source distribution, though the Fedora version of 4.4.3 shows similar behavior-- $ g++ -Wfatal-errors -c -O3 -Wall foo.ccfoo.cc: In member function void TypeRegistry::registerType(int, const ValueType&) [with ValueType = int (*)()]: foo.cc:119: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://bugzilla.redhat.com/bugzilla> for instructions. Preprocessed source stored into /tmp/cc1IzDg0.out file, please attach this to your bugreport. $ gcc -v Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --enable-plugin --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.4.3 20100127 (Red Hat 4.4.3-4) (GCC) --as well) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43416
[Bug tree-optimization/43416] [4.4 regression] internal compiler error in C++ template instantiations at -O3
--- Comment #5 from wlam at kosmix dot com 2010-03-19 04:23 --- I think you're right--I built gcc trunk at r157545, and I don't see the segmentation fault there. (Thanks for your quick response!) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43416
[Bug tree-optimization/43415] [4.4 Regression] Consumes large amounts of memory and time in PRE at -O3
--- Comment #6 from wlam at kosmix dot com 2010-03-20 06:40 --- Thanks for the quick fix! (I was just trying trunk at r157584 after your comment above.) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43415
