[Bug target/57655] New: [4.8/4.9 Regression] ICE: in create_pre_exit, at mode-switching.c:418 with -mno-fp-ret-in-387 -mvzeroupper -mxop and __builtin_ilogbl()

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57655

            Bug ID: 57655
           Summary: [4.8/4.9 Regression] ICE: in create_pre_exit, at
                    mode-switching.c:418 with -mno-fp-ret-in-387
                    -mvzeroupper -mxop and __builtin_ilogbl()
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz

Created attachment 30324
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30324&action=edit
reduced testcase

Compiler output:
$ gcc -mno-fp-ret-in-387 -mvzeroupper -mxop testcase.c
testcase.c: In function 'foo':
testcase.c:5:1: internal compiler error: in create_pre_exit, at
mode-switching.c:418
 }
 ^
0x1178ceb create_pre_exit
        /mnt/svn/gcc-trunk/gcc/mode-switching.c:404
0x1178ceb optimize_mode_switching
        /mnt/svn/gcc-trunk/gcc/mode-switching.c:493
0x1178ceb rest_of_handle_mode_switching
        /mnt/svn/gcc-trunk/gcc/mode-switching.c:779
0xc97d17 rest_of_handle_insert_vzeroupper
        /mnt/svn/gcc-trunk/gcc/config/i386/i386.c:2599
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

$ gcc -v                                              
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-200176-lto-fortran-checking-yes-rtl-df/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk/binary-200176-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl
Thread model: posix
gcc version 4.9.0 20130618 (experimental) (GCC) 

Tested revisions:
r200211 - ICE
4.8 r198018 - ICE
4.7 r198018 - OK