[Bug tree-optimization/28888] New: [4.1/4.2 regression] ICE in tree check: expected cond_expr, have label_expr in simplify_using_initial_conditions, at tree-ssa-loop-niter.c

["tbm at cyrius dot com" <gcc-bugzilla at gcc dot gnu dot org>]

I get a tree check error with -ftree-vectorize.  It works with 4.0 but fails
with 4.1 and 4.2.

(sid)345:tbm@usurper: ~] x86_64-unknown-linux-gnu-gcc -ftree-vectorize -Os -c
oo2c-allocate.c
oo2c-allocate.c: In function 'Allocate__WriteStats':
oo2c-allocate.c:4: internal compiler error: tree check: expected cond_expr,
have label_expr in simplify_using_initial_conditions, at
tree-ssa-loop-niter.c:926
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
zsh: exit 1     x86_64-unknown-linux-gnu-gcc -ftree-vectorize -Os -c
oo2c-allocate.c
(sid)346:tbm@usurper: ~] x86_64-unknown-linux-gnu-gcc -ftree-vectorize -O1 -c
oo2c-allocate.c
oo2c-allocate.c: In function 'Allocate__WriteStats':
oo2c-allocate.c:4: internal compiler error: tree check: expected cond_expr,
have modify_expr in simplify_using_initial_conditions, at
tree-ssa-loop-niter.c:926
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
zsh: exit 1     x86_64-unknown-linux-gnu-gcc -ftree-vectorize -O1 -c
oo2c-allocate.c
(sid)347:tbm@usurper: ~] x86_64-unknown-linux-gnu-gcc -ftree-vectorize -O2 -c
oo2c-allocate.c
oo2c-allocate.c: In function 'Allocate__WriteStats':
oo2c-allocate.c:4: internal compiler error: tree check: expected cond_expr,
have label_expr in simplify_using_initial_conditions, at
tree-ssa-loop-niter.c:926
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
zsh: exit 1     x86_64-unknown-linux-gnu-gcc -ftree-vectorize -O2 -c
oo2c-allocate.c
(sid)348:tbm@usurper: ~] x86_64-unknown-linux-gnu-gcc -ftree-vectorize -O3 -c
oo2c-allocate.c
(sid)349:tbm@usurper: ~]


-- 
           Summary: [4.1/4.2 regression] ICE in tree check: expected
                    cond_expr, have label_expr in
                    simplify_using_initial_conditions, at tree-ssa-loop-
                    niter.c
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28888