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Date: Wed, 13 Oct 2004 23:14:00 -0000
From: "hp at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20041013231425.17984.hp@gcc.gnu.org>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug target/17984] New: Recent peephole2:s may cause internal compiler errors (2)
X-Bugzilla-Reason: CC
X-SW-Source: 2004-10/txt/msg01836.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

See also PR 17626.  This is another bug in the peephole2 patterns; constants
aren't truncated/sign-extended when changing to a shorter mode.  This causes
ICEs like the following:
x/gcc/testsuite/gcc.dg/cris-peep2-xsrand2.c: In function 'andwlsr':
x/gcc/testsuite/gcc.dg/cris-peep2-xsrand2.c:16: error: unrecognizable insn:
(insn 31 30 25 0 (set (reg:HI 10 r10)
        (and:HI (reg:HI 10 r10)
            (const_int 65399 [0xff77]))) -1 (nil)
    (nil))
x/gcc/testsuite/gcc.dg/cris-peep2-xsrand2.c:16: internal compiler error: in
extract_insn, at recog.c:2034

-- 
           Summary: Recent peephole2:s may cause internal compiler errors
                    (2)
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: hp at gcc dot gnu dot org
        ReportedBy: hp at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: cris-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17984