[Bug tree-optimization/42283] New: regression: ICE when bootstrapping trunk with -O2 -ftree-loop-distribution

["matt at use dot net" <gcc-bugzilla at gcc dot gnu dot org>]

While bootstrapping trunk from 20091201 on amd64. Crash doesn't happen with GCC
4.4.1-ubuntu8.

The ICE occurs when -ftree-loop-distribution is combined with -O2
-ftree-loop-linear. The commandline below reproduces the issue as well, but can
be reduced to the forementioned options as well.

gcc -c  -g -fkeep-inline-functions -DIN_GCC   -W -Wall -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-Wold-style-definition -Wc++-compat -fno-common  -DHAVE_CONFIG_H -I. -I.
-I../../gcc-trunk/gcc -I../../gcc-trunk/gcc/. -I../../gcc-trunk/gcc/../include
-I../../gcc-trunk/gcc/../libcpp/include  -I../../gcc-trunk/gcc/../libdecnumber
-I../../gcc-trunk/gcc/../libdecnumber/bid -I../libdecnumber 
-DCLOOG_PPL_BACKEND  -I/usr/include/libelf -O2 -floop-interchange
-floop-strip-mine -floop-block -findirect-inlining -ftree-switch-conversion
-fvect-cost-model -fgcse-sm -fgcse-las -fgcse-after-reload -fsee
-ftree-loop-linear -ftree-loop-distribution -ftree-loop-im -ftree-loop-ivcanon
-fivopts -fvpt -funroll-loops -funswitch-loops ../../gcc-trunk/gcc/sbitmap.c -o
sbitmap.o
../../gcc-trunk/gcc/reload1.c: In function ‘delete_output_reload’:
../../gcc-trunk/gcc/reload1.c:8440:1: error: type mismatch in binary expression
long unsigned int

<unnamed-signed:64>

long unsigned int

D.75724_180 = D.75723_179 - D.75718_194;

../../gcc-trunk/gcc/reload1.c:8440:1: error: type mismatch in binary expression
long unsigned int

<unnamed-signed:64>

long unsigned int

D.75733_135 = D.75732_154 - D.75727_163;

../../gcc-trunk/gcc/reload1.c:8440:1: internal compiler error: verify_stmts
failed


-- 
           Summary: regression: ICE when bootstrapping trunk with -O2 -
                    ftree-loop-distribution
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: matt at use dot net
 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=42283