optimization/5891: ICE compiling SPEC fp test with -funroll-loops on ia64

optimization/5891: ICE compiling SPEC fp test with -funroll-loops on ia64

[janis187]

>Number:         5891
>Category:       optimization
>Synopsis:       ICE compiling SPEC fp test with -funroll-loops on ia64
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Fri Mar 08 12:56:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Janis Johnson
>Release:        unknown-1.0
>Organization:
>Environment:
Itanium, Red Hat Linux release 7.1.94 (Roswell)
>Description:
Compiling the SPEC CPU2000 floating point test 200.sixtrack
with "-O2 -funroll-loops" on ia64-unknown-linux-gnu results
in an ICE:

bug.f: In subroutine `eig66':
bug.f:69: Attempt to delete prologue/epilogue insn:
(insn 1643 1641 1645 (set (reg:DI 333 ar.lc)
        (reg:DI 41 r46)) -1 (nil)
    (nil))
bug.f:69: Internal compiler error in propagate_one_insn, at flow.c:1573

This is a regression from GCC 3.0.4.

Compile the test case with "-O2 -funroll-loops" on ia64.
IBM's SPEC representative got permission from SPEC for me
to send in the test case.
>How-To-Repeat:
Compile the test case with "-O2 -funroll-loops" on ia64.
IBM's SPEC representative got permission from SPEC for me
to send in the test case.
>Fix:
Unknown
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="bug.f"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="bug.f"
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Re: optimization/5891: ICE compiling SPEC fp test with -funroll-loops on ia64

[rth]

Synopsis: ICE compiling SPEC fp test with -funroll-loops on ia64

Responsible-Changed-From-To: unassigned->jakub
Responsible-Changed-By: rth
Responsible-Changed-When: Wed Apr  3 02:32:07 2002
Responsible-Changed-Why:
    Your patch.
State-Changed-From-To: open->closed
State-Changed-By: rth
State-Changed-When: Wed Apr  3 02:32:07 2002
State-Changed-Why:
    Fixed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5891