[Bug target/27158] New: [4.1/4.2 regression] ICE in extract_insn with -maltivec

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

I get an ICE in extract_insn with -maltivec.  The original source file works
with gcc 4.0 but fails with 4.1 and 4.2.  This reduced test case fails with 4.1
but works with 4.2.  I'll run it through delta again to find a test case for
4.2.

304:tbm@test: ~/delta/bin] gcc-4.1 -maltivec -O1 -c mini.c
305:tbm@test: ~/delta/bin] gcc-4.1 -maltivec -O2 -c mini.c
mini.c: In function â??nb_kernel112_ppc_altivecâ??:
mini.c:110: error: unrecognizable insn:
(insn 287 43 227 3 (set (reg:V4SF 90 13)
        (mem/u/c/i:V4SF (symbol_ref/u:SI ("*.LC0") [flags 0x2]) [3 S16 A128]))
-1 (nil)
    (nil))
mini.c:110: internal compiler error: in extract_insn, at recog.c:2084
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
Preprocessed source stored into /tmp/cc6nkhMT.out file, please attach this to
your bugreport.
zsh: exit 1     gcc-4.1 -maltivec -O2 -c mini.c
306:tbm@test: ~/delta/bin] /usr/lib/gcc-snapshot/bin/gcc -maltivec -O2 -c
mini.c
307:tbm@test: ~/delta/bin]

This may be related to PR19960 but doesn't appear to be the same.


-- 
           Summary: [4.1/4.2 regression] ICE in extract_insn with -maltivec
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com
 GCC build triplet: powerpc-linux-gnu
  GCC host triplet: powerpc-linux-gnu
GCC target triplet: powerpc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27158