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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/57098] New: ICE: in extract_insn, at recog.c:2154 (unrecognizable insn) with -mcmodel=large -msse4 and __builtin_shuffle()
Date: Sun, 28 Apr 2013 07:08:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57098

             Bug #: 57098
           Summary: ICE: in extract_insn, at recog.c:2154 (unrecognizable
                    insn) with -mcmodel=large -msse4 and
                    __builtin_shuffle()
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 29957
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29957
reduced testcase

Compiler output:
$ gcc -mcmodel=large -msse4 testcase.c
testcase.c: In function 'foo':
testcase.c:6:1: error: unrecognizable insn:
 }
 ^
(insn 19 18 20 2 (set (reg:V16QI 71)
        (unspec:V16QI [
                (reg:V16QI 71)
                (mem/u/c:V16QI (symbol_ref/u:DI ("*.LC1") [flags 0x2]) [0 S16
A128])
            ] UNSPEC_PSHUFB)) testcase.c:5 -1
     (nil))
testcase.c:6:1: internal compiler error: in extract_insn, at recog.c:2154
0x9b919a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        /mnt/svn/gcc-trunk/gcc/rtl-error.c:109
0x9b922a _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        /mnt/svn/gcc-trunk/gcc/rtl-error.c:117
0x974fa1 extract_insn(rtx_def*)
        /mnt/svn/gcc-trunk/gcc/recog.c:2154
0x811c67 instantiate_virtual_regs_in_insn
        /mnt/svn/gcc-trunk/gcc/function.c:1561
0x811c67 instantiate_virtual_regs
        /mnt/svn/gcc-trunk/gcc/function.c:1926
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-198362-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-198362-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl
Thread model: posix
gcc version 4.9.0 20130427 (experimental) (GCC) 

Tested revisions:
r198362 - crash
4.8 r198018 - crash
4.7 r198018 - crash
4.6 r198018 - doesn't recognise __builtin_shuffle()