bootstrap/3470: errors building sparc64-elf compiler ("native")

[mrg at eterna dot com dot au]

>Number:         3470
>Category:       bootstrap
>Synopsis:       sparc64-elf libgcc problems.
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 28 19:26:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     matthew green
>Release:        3.1 20010627 (experimental)
>Organization:
people's front against (bozotic) www (softwar foundation)
>Environment:
System: NetBSD powerofseven.eterna.com.au 1.5W NetBSD 1.5W (POWEROFSEVEN) #337: Tue Jun 12 02:04:32 EST 2001 mrg@powerofseven.eterna.com.au:/orb/a/obj.sys/POWEROFSEVEN sparc64


	
host: sparc64-unknown-elf
build: sparc64-unknown-elf
target: sparc64-unknown-elf
configured with: /croc/mrg/gcc/egcs/configure --prefix=/local/gcc sparc64-elf
>Description:

	building a compiler on NetBSD/sparc64 does not work.  while building
	libgcc, the following error occurs:

./xgcc -B./ -B/local/gcc/sparc64-elf/bin/ -isystem /local/gcc/sparc64-elf/include -O2   -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -isystem ./include   -g1  -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -I. -I. -I/croc/mrg/gcc/egcs/gcc -I/croc/mrg/gcc/egcs/gcc/.  -I/croc/mrg/gcc/egcs/gcc/config -I/croc/mrg/gcc/egcs/gcc/../include  -DL_fixunstfdi -c /croc/mrg/gcc/egcs/gcc/libgcc2.c -o libgcc/./_fixunstfdi.o
/croc/mrg/gcc/egcs/gcc/libgcc2.c: In function `__fixunstfdi':
/croc/mrg/gcc/egcs/gcc/libgcc2.c:864: Internal compiler error in simplify_subreg, at simplify-rtx.c:2198

	i also get the same failure using a (not-yet-contributed) configuration
	for NetBSD/sparc64, and also when cross compiling from several hosts
	to a sparc64 target.

>How-To-Repeat:
	
	attempt to build a sparc64 compiler.  i was using gcc-current updated
	20010727 09:09 UTC.

>Fix:
	unknown.
>Release-Note:
>Audit-Trail:
>Unformatted: