[Bug middle-end/42558] [4.5 Regression] miscompilation related to -floop-block

2009-12-31 Thread rguenth at gcc dot gnu dot org 


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rguenth at gcc dot gnu dot org changed:

   What|Removed |Added

   Priority|P2  |P3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42558

[Bug middle-end/42558] [4.5 Regression] miscompilation related to -floop-block

2009-12-30 Thread jv244 at cam dot ac dot uk 


--- Comment #1 from jv244 at cam dot ac dot uk  2009-12-30 21:08 ---
Created an attachment (id=19426)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19426action=view)
testcase


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42558

[Bug middle-end/42558] [4.5 Regression] miscompilation related to -floop-block

2009-12-30 Thread jv244 at cam dot ac dot uk 


--- Comment #2 from jv244 at cam dot ac dot uk  2009-12-30 21:10 ---
full version details:

 gfortran -v -floop-block-O2  -funroll-loops -ffast-math bug.f90
Driving: gfortran -v -floop-block -O2 -funroll-loops -ffast-math bug.f90
-lgfortran -lm -shared-libgcc
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/data03/vondele/gcc_trunk/build/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /data03/vondele/gcc_trunk/gcc/configure --disable-bootstrap
--prefix=/data03/vondele/gcc_trunk/build --enable-languages=c,c++,fortran
--disable-multilib --with-ppl=/data03/vondele/gcc_trunk/build/
--with-cloog=/data03/vondele/gcc_trunk/build/
--with-libelf=/data03/vondele/libelf-0.8.12/build/ --enable-gold --enable-lto
--enable-plugins
Thread model: posix
gcc version 4.5.0 20091229 (experimental) [trunk revision 155502] (GCC)
COLLECT_GCC_OPTIONS='-v' '-floop-block' '-O2' '-funroll-loops' '-ffast-math'
'-shared-libgcc' '-mtune=generic'

/data03/vondele/gcc_trunk/build/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/f951
bug.f90 -quiet -dumpbase bug.f90 -mtune=generic -auxbase bug -O2 -version
-floop-block -funroll-loops -ffast-math -fintrinsic-modules-path
/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/finclude
-o /tmp/ccVuGyWl.s
GNU Fortran (GCC) version 4.5.0 20091229 (experimental) [trunk revision 155502]
(x86_64-unknown-linux-gnu)
compiled by GNU C version 4.3.1 20080507 (prerelease) [gcc-4_3-branch
revision 135036], GMP version 4.2.4, MPFR version 2.4.1, MPC version 0.8
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU Fortran (GCC) version 4.5.0 20091229 (experimental) [trunk revision 155502]
(x86_64-unknown-linux-gnu)
compiled by GNU C version 4.3.1 20080507 (prerelease) [gcc-4_3-branch
revision 135036], GMP version 4.2.4, MPFR version 2.4.1, MPC version 0.8
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
COLLECT_GCC_OPTIONS='-v' '-floop-block' '-O2' '-funroll-loops' '-ffast-math'
'-shared-libgcc' '-mtune=generic'
 as -V -Qy -o /tmp/cc84OG4d.o /tmp/ccVuGyWl.s
GNU assembler version 2.18.50 (x86_64-suse-linux) using BFD version (GNU
Binutils; openSUSE 11.0) 2.18.50.20080409-11.1
COMPILER_PATH=/data03/vondele/gcc_trunk/build/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/:/data03/vondele/gcc_trunk/build/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/:/data03/vondele/gcc_trunk/build/libexec/gcc/x86_64-unknown-linux-gnu/:/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/:/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/
LIBRARY_PATH=/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/:/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-floop-block' '-O2' '-funroll-loops' '-ffast-math'
'-shared-libgcc' '-mtune=generic'

/data03/vondele/gcc_trunk/build/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/collect2
--eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2
/usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o
/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/crtbegin.o
-L/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0
-L/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/../../../../lib64
-L/lib/../lib64 -L/usr/lib/../lib64
-L/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/../../..
/tmp/cc84OG4d.o -lgfortran -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/crtfastmath.o
/data03/vondele/gcc_trunk/build/lib/gcc/x86_64-unknown-linux-gnu/4.5.0/crtend.o
/usr/lib/../lib64/crtn.o


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jv244 at cam dot ac dot uk changed:

   What|Removed |Added

 CC||spop at gcc dot gnu dot org
   Priority|P3  |P2
   Target Milestone|--- |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42558

[Bug middle-end/42558] [4.5 Regression] miscompilation related to -floop-block

2009-12-30 Thread hjl dot tools at gmail dot com 


--- Comment #3 from hjl dot tools at gmail dot com  2009-12-30 21:34 ---
It is caused by revision 155418:

http://gcc.gnu.org/ml/gcc-cvs/2009-12/msg00562.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42558