http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48344
--- Comment #1 from Khem Raj <raj.khem at gmail dot com> 2011-04-01 20:43:26
UTC ---
I could track it down to commit 148869 on trunk
Step 1 of VSX changes: Powerpc infrstructure changes
ChangeLog goes like this
2009-06-23 Michael Meissner <meiss...@linux.vnet.ibm.com>
Pat Haugen <pthau...@us.ibm.com>
Revital Eres <e...@il.ibm.com>
* config.in (HAVE_AS_POPCNTD): Add default definition.
(HAVE_AS_LWSYNC): Ditto.
* configure.ac (gcc_cv_as_powerpc_mfpgpr): Provide real binutils
release number.
(gcc_cv_as_powerpc_cmpb): Ditto.
(gcc_cv_as_powerpc_dfp): Ditto.
(gcc_cv_as_powerpc_vsx): Ditto.
(gcc_cv_as_powerpc_popcntd): Add feature test for assembler
supporting the popcntd/lwsync instructions.
(gcc_cv_as_powerpc_lwsync): Ditto.
* configure: Regenerate.
* config/rs6000/aix53.h (ASM_CPU_SPEC): Add support for
-mcpu=native and -mcpu=power7.
* config/rs6000/aix61.h (ASM_CPU_SPEC): Ditto.
...
