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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/59121] New: endless loop with -O2 -floop-parallelize-all
Date: Wed, 13 Nov 2013 21:22:00 -0000 [thread overview]
Message-ID: <bug-59121-4@http.gcc.gnu.org/bugzilla/> (raw)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59121
Bug ID: 59121
Summary: endless loop with -O2 -floop-parallelize-all
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: janus at gcc dot gnu.org
Consider the following simple Fortran code:
subroutine smooth1
implicit none
integer :: j, k, l, nbin1(3)
real, dimension(55,48,49) :: atemp, acc
common /ACC_INPUT/ nbin1
do j=1,nbin1(1)
do k=1,nbin1(2)
do l=1,nbin1(3)
acc(j,k,l) = atemp(j,k,l)
end do
end do
end do
end
Compiling this with "gfortran -c -O2 -floop-parallelize-all" apparently never
finishes.
$ gfortran -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.8.1-10ubuntu8' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.8 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin
--with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
--enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre
--enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --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 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu8)
next reply other threads:[~2013-11-13 21:22 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-13 21:22 janus at gcc dot gnu.org [this message]
2013-11-13 22:07 ` [Bug tree-optimization/59121] " dominiq at lps dot ens.fr
2013-11-13 22:07 ` dominiq at lps dot ens.fr
2013-11-14 10:09 ` janus at gcc dot gnu.org
2013-11-14 10:25 ` dominiq at lps dot ens.fr
2013-11-14 21:04 ` janus at gcc dot gnu.org
2013-11-14 21:10 ` janus at gcc dot gnu.org
2013-11-14 21:19 ` [Bug tree-optimization/59121] [4.8/4.9 Regression] " janus at gcc dot gnu.org
2013-11-15 9:23 ` rguenth at gcc dot gnu.org
2013-11-17 12:27 ` janus at gcc dot gnu.org
2014-01-17 12:32 ` rguenth at gcc dot gnu.org
2014-01-17 17:16 ` law at redhat dot com
2014-02-03 15:23 ` mircea.namolaru at inria dot fr
2014-03-10 16:35 ` mircea.namolaru at inria dot fr
2014-03-10 16:41 ` law at redhat dot com
2014-03-10 22:19 ` grosser at gcc dot gnu.org
2014-03-25 17:03 ` mircea.namolaru at inria dot fr
2014-03-25 17:27 ` grosser at gcc dot gnu.org
2014-04-10 22:01 ` mircea.namolaru at inria dot fr
2014-04-11 10:45 ` rguenth at gcc dot gnu.org
2014-05-22 9:05 ` [Bug tree-optimization/59121] [4.8/4.9/4.10 " rguenth at gcc dot gnu.org
2014-12-19 13:39 ` [Bug tree-optimization/59121] [4.8/4.9/5 " jakub at gcc dot gnu.org
2015-06-23 8:20 ` [Bug tree-optimization/59121] [4.8/4.9/5/6 " rguenth at gcc dot gnu.org
2015-06-26 20:08 ` [Bug tree-optimization/59121] [4.9/5/6 " jakub at gcc dot gnu.org
2015-06-26 20:35 ` jakub at gcc dot gnu.org
2015-10-09 14:58 ` spop at gcc dot gnu.org
2015-10-09 15:00 ` spop at gcc dot gnu.org
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