[ARM] Replacing variable swaps that use a temporary variable with a call to std:...

[ARM] Replacing variable swaps that use a temporary variable with a call to std::swap in gcc/config/arm/arm.c

On behalf of <bilyan.borisov@arm.com>

2015-09-21  Bilyan Borisov  <bilyan.borisov@arm.com>

	* config/arm/arm.c (thumb_output_move_mem_multiple): Replaced
	operands[4] operands[5] swap with std::swap, removed tmp variable.
	(arm_evpc_neon_vzip): Replaced in0/in1 and
	out0/out1 swaps with std::swap, removed x variable.
	(arm_evpc_neon_vtrn): Replaced in0/int1 and
	out0/out1 swaos with std::swap, removed x variable.
	(arm_expand_vec_perm_const_1): Replaced
	d->op0/d->op1 swap with std::swap, removed x variable.
	(arm_evpc_neon_vuzp): Replaced in0/in1 and
	out0/out1 swaps with std::swap, removed x variable.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@227963 138bc75d-0d04-0410-961f-82ee72b054a4