c/2675: 3.0 branch ICE when inlining (does not occur on 2.95.2)

c/2675: 3.0 branch ICE when inlining (does not occur on 2.95.2)

[Dan Nicolaescu]

>Number:         2675
>Category:       c
>Synopsis:       3.0 branch ICE when inlining (does not occur on 2.95.2)
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Fri Apr 27 20:46:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Dan Nicolaescu <dann@godzilla.ics.uci.edu>
>Release:        unknown-1.0
>Organization:
>Environment:
sun-sparc-solaris2.7
gcc snapshot from 2001-04-23
>Description:
The following code gets an ICE when compiled with
-O2 -finline-functions
(or -O3)


void f1 (double);
void f2 (int);

void
foo (int type, double xx)
{
  if (type)
    f1 (xx);
  else
    f2 (type);
}

void
bar (int type)
{
  foo (type, 1.0);
}

range.i: In function `bar':
range.i:18: Unrecognizable insn:
(insn/i 29 42 30 (set (reg:DF 24 %i0)
        (reg/v:SI 106)) -1 (nil)
    (expr_list:REG_DEAD (reg/v:SI 106)
        (expr_list:REG_EQUAL (const_int 0 [0x0])
            (nil))))
range.i:18: Internal compiler error in extract_insn, at recog.c:2212
Please submit a full bug report, with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.
>How-To-Repeat:
compile the code above using -O2 -finline-functions
on a sun-sparc-solaris2.7 machine with the 
gcc snapshot from 2001-04-23

It also crashes on the mainline. 
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: