optabs.c (expand_binop): Don't create a broadcast vector with a source element wider than the inner mode.

[gcc]

2015-09-03  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* optabs.c (expand_binop): Don't create a broadcast vector with a
	source element wider than the inner mode.

[gcc/testsuite]

2015-09-03  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/vec-shift.c: New test.

From-SVN: r227444