optimization/6093: ICE in merge_if_block, at ifcvt.c:1870

[Franz.Sirl-kernel@lauterbach.com]

>Number:         6093
>Category:       optimization
>Synopsis:       ICE in merge_if_block, at ifcvt.c:1870
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Fri Mar 29 09:26:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Franz.Sirl-kernel@lauterbach.com
>Release:        gcc version 3.1 20020328 (prerelease)
>Organization:
>Environment:
powerpc-linux-gnu
binutils-2.11.93.0.2-9
glibc-2.2.5-27a_31
>Description:
gcc/testsuite/gcc.dg/20000906-1.c ICE's on powerpc-linux-gnu if
compiled with -O1 or higher. This is a regression from gcc-3.0.4,
but no "showstopper" (not seen in the wild yet), so it's OK for
me if fixing the ICE is deferred until gcc-3.1.1 or later.
>How-To-Repeat:
[fsirl@enzo:~]$ gcc -O1 -c /cvsx/gcc31/gcc/testsuite/gcc.dg/20000906-1.c
/cvsx/gcc31/gcc/testsuite/gcc.dg/20000906-1.c: In function `foo':
/cvsx/gcc31/gcc/testsuite/gcc.dg/20000906-1.c:60: Internal compiler error in merge_if_block, at ifcvt.c:1870
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>Fix:

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