backport: re PR target/64358 (Wrong code for __int128 operations in powerpc64le)

backport: re PR target/64358 (Wrong code for __int128 operations in powerpc64le)

	Backport from mainline
	2014-12-20  Segher Boessenkool  <segher@kernel.crashing.org>

	PR target/64358
	* config/rs6000/rs6000.c (rs6000_split_logical_inner): Swap the
	input operands if only the second is inverted.
	* config/rs6000/rs6000.md (*boolc<mode>3_internal1 for BOOL_128):
	Swap BOOL_REGS_OP1 and BOOL_REGS_OP2.  Correct arguments to
	rs6000_split_logical.
	(*boolc<mode>3_internal2 for TI2): Swap operands[1] and operands[2].

From-SVN: r219548