[Bug target/46089] New: ICE: in gen_reg_rtx, at emit-rtl.c:861 with -mcmodel=large -fsplit-stack

[Bug target/46089] New: ICE: in gen_reg_rtx, at emit-rtl.c:861 with -mcmodel=large -fsplit-stack

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46089

           Summary: ICE: in gen_reg_rtx, at emit-rtl.c:861 with
                    -mcmodel=large -fsplit-stack
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Even simple testcase such as:

---- testcase.c ----
void foo(void) {}
--------------------

Causes this ICE:
$ gcc -mcmodel=large -fsplit-stack testcase.c
testcase.c: In function 'foo':
testcase.c:1:1: internal compiler error: in gen_reg_rtx, at emit-rtl.c:861
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r165699 - crash
r163636 - doesn't know -fsplit-stack

[Bug target/46089] ICE: in gen_reg_rtx, at emit-rtl.c:861 with -mcmodel=large -fsplit-stack

[ian at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46089

--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2010-11-08 04:34:37 UTC ---
Author: ian
Date: Mon Nov  8 04:34:32 2010
New Revision: 166427

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166427
Log:
gcc/:
    PR target/46089
    * config/i386/i386.c (split_stack_fn_large): New static variable.
    (ix86_expand_split_stack_prologue): Handle large model.
libgcc/:
    * config/i386/morestack.S (__morestack_large_model): New
    function.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/libgcc/ChangeLog
    trunk/libgcc/config/i386/morestack.S

[Bug target/46089] ICE: in gen_reg_rtx, at emit-rtl.c:861 with -mcmodel=large -fsplit-stack

[ian at airs dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46089

Ian Lance Taylor <ian at airs dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ian at airs dot com
         Resolution|                            |FIXED

--- Comment #2 from Ian Lance Taylor <ian at airs dot com> 2010-11-08 04:37:40 UTC ---
Fixed.  Thanks for the bug report.

[Bug target/46089] ICE: in gen_reg_rtx, at emit-rtl.c:861 with -mcmodel=large -fsplit-stack

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46089

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.6.0