[Bug bootstrap/27500] New: iWMMXT bootstrap failure with recent binutils

["s_j_newbury at yahoo dot co dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

I have built an EABI/iWMMXt Gentoo based system.  The toolchain I used is
modified to add a Linux/EABI/iWMMXt target.  It has been fine until I changed
my binutils from an earlier snapshot to a current version Gentoo 2.16.92,
csl-2_17-branch or CVS trunk.  Now when attempting to build GCC (on the host) I
get the following error:

gcc -c   -O2 -march=iwmmxt -mcpu=iwmmxt -pipe -DIN_GCC   -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic
-Wno-long-long -Wno-variadic-macros -Wold-style-definition
-Wmissing-format-attribute    -DHAVE_CONFIG_H -I. -Icp
-I/var/tmp/portage/gcc-4.1.1/work/gcc-4.1-20060505/gcc
-I/var/tmp/portage/gcc-4.1.1/work/gcc-4.1-20060505/gcc/cp
-I/var/tmp/portage/gcc-4.1.1/work/gcc-4.1-20060505/gcc/../include
-I/var/tmp/portage/gcc-4.1.1/work/gcc-4.1-20060505/gcc/../libcpp/include    
/var/tmp/portage/gcc-4.1.1/work/gcc-4.1-20060505/gcc/cp/typeck2.c -o
cp/typeck2.o
{standard input}: Assembler messages:
{standard input}:2391: Error: iWMMXt control register expected -- `tmcr
wcgr0,r1'

This occurs if I attempt to build GCC trunk or 4.1.1 and I suspect 4.1.0 but I
haven't tested it.

The binutils snapshot from 20060421 does complete the build although it is
missing the check above that is clearly failing.  Whether the error is in gcc
or binutils I am uncertain.


-- 
           Summary: iWMMXT bootstrap failure with recent binutils
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: s_j_newbury at yahoo dot co dot uk
 GCC build triplet: arm-iwmmxt-linux-gnueabi
  GCC host triplet: arm-iwmmxt-linux-gnueabi
GCC target triplet: arm-iwmmxt-linux-gnueabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27500