From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6409 invoked by alias); 29 Oct 2012 12:34:10 -0000 Received: (qmail 5789 invoked by uid 48); 29 Oct 2012 12:33:43 -0000 From: "hjl.tools at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/55116] New: [4.8 Regression] LRA failed to decompose ASHIFT Date: Mon, 29 Oct 2012 12:34:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: hjl.tools at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-10/txt/msg02675.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D55116 Bug #: 55116 Summary: [4.8 Regression] LRA failed to decompose ASHIFT Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned@gcc.gnu.org ReportedBy: hjl.tools@gmail.com CC: ubizjak@gmail.com, vmakarov@redhat.com [hjl@gnu-tools-1 tmp]$ /usr/gcc-4.8.0-x32/bin/gcc -S -O2 -w -S -mx32=20 /export/gnu/import/git/gcc/gcc/testsuite/gcc.c-torture/execute/builtin-pref= etch-3.c -maddress-mode=3Dlong /export/gnu/import/git/gcc/gcc/testsuite/gcc.c-torture/execute/builtin-pref= etch-3.c: In function =E2=80=98expr_vol_global=E2=80=99: /export/gnu/import/git/gcc/gcc/testsuite/gcc.c-torture/execute/builtin-pref= etch-3.c:100:1: internal compiler error: in gen_add2_insn, at optabs.c:4694 } ^ 0x81fe4b gen_add2_insn(rtx_def*, rtx_def*) /export/gnu/import/git/gcc/gcc/optabs.c:4694 0x7e2dc7 lra_emit_add(rtx_def*, rtx_def*, rtx_def*) /export/gnu/import/git/gcc/gcc/lra.c:314 0x7eba63 process_addr_reg /export/gnu/import/git/gcc/gcc/lra-constraints.c:1092 0x7ebeed process_address /export/gnu/import/git/gcc/gcc/lra-constraints.c:2290 0x7ef52f curr_insn_transform /export/gnu/import/git/gcc/gcc/lra-constraints.c:2656 0x7f1984 lra_constraints(bool) /export/gnu/import/git/gcc/gcc/lra-constraints.c:3407 0x7e534e lra(_IO_FILE*) /export/gnu/import/git/gcc/gcc/lra.c:2281 0x7ad7f6 do_reload /export/gnu/import/git/gcc/gcc/ira.c:4614 0x7ad7f6 rest_of_handle_reload /export/gnu/import/git/gcc/gcc/ira.c:4720 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See for instructions. [hjl@gnu-tools-1 tmp]$=20 Breakpoint 1, lra_emit_add (x=3D0x7ffff1adb440, y=3D0x7ffff1ae41b0,=20 z=3D0x7ffff1ad7b00) at /export/gnu/import/git/gcc/gcc/lra.c:313 313 emit_move_insn (x, z); (gdb) call debug_rtx (x) (reg:SI 206) (gdb) call debug_rtx (y) (ashift:SI (reg:SI 96 [ glob_vol_int.22 ]) (const_int 2 [0x2])) (gdb)