[Bug tree-optimization/45071] New: [4.6 Regression] ICE: tree check: expected ssa_name, have integer_cst in inhibit_phi_insertion, at tree-ssa-pre.c:3278 with -ftree-pre -ftree-vectorize

["zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

Command line:
$ gcc -O -ftree-pre -ftree-vectorize testcase.c
or
$ gcc -O2 -ftree-vectorize testcase.c
or
$ gcc -O3 testcase.c

Compiler output:
$ gcc -O -ftree-pre -ftree-vectorize testcase.c
testcase.c: In function 'f1':
testcase.c:27:1: internal compiler error: tree check: expected ssa_name, have
integer_cst in inhibit_phi_insertion, at tree-ssa-pre.c:3278
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r162456 - crash
r162056 - crash
r161659 - OK


-- 
           Summary: [4.6 Regression] ICE: tree check: expected ssa_name,
                    have integer_cst in inhibit_phi_insertion, at tree-ssa-
                    pre.c:3278 with -ftree-pre -ftree-vectorize
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45071