powerpc: Fix powerpc64 build failure with binutils 2.22

GLIBC memset optimization for POWER8 uses the '.machine power8'
directive, which is only supported officially on binutils 2.24+.  This
causes a build failure on older binutils.

Since the requirement of .machine power8 is to correctly assembly the
'mtvsrd' instruction and it is already handled by the MTVSRD_V1_R4
macro, there is no really needed of using it.

The patch replaces the power8 with power7 for .machine directive.

It fixes BZ#17869.

1 files changed, 4 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index cd093808ff..3c5ed3c1d5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2015-01-24  Adhemerval Zanellla  <azanella@linux.vnet.ibm.com>
 
+	[BZ #17869]
+	* sysdeps/powerpc/powerpc64/power8/memset.S: Use power7 instead of
+	power8 in .machine directive.
+
 	[BZ #17868]
 	* sysdeps/powerpc/powerpc64/dl-machine.h (resolve_ifunc): Force value
 	set dependency from opd value.