c4x.md (storeqf_int, [...]): Add new patterns with corresponding splitters to handle...

c4x.md (storeqf_int, [...]): Add new patterns with corresponding splitters to handle moves of floating point...

	* config/c4x/c4x.md (storeqf_int, storeqf_int_clobber, loadqf_int,
 	loadqf_int_clobber): Add new patterns with corresponding splitters
 	to handle moves of floating point values into and out of intager
 	registers by using memory.
	* config/c4x/c4x.c (c4x_check_legit_addr): Disallow PRE_INC for modes
	other than QFmode and QImode.
	(mixed_subreg_operand): New function.
	(c4x_emit_move_sequence): If moving a floating point value into or
	out of an integer register, use the new patterns storeqf_int_clobber
	or loadqf_int_clobber.
	(reg_imm_operand, *_reg_operand): Call reg_operand instead of
	register_operand.
	(reg_operand, src_operand): Disallow operand if it satisifes
	mixed_subreg_operand.
	* config/c4x/c4x.h (mixed_subreg_operand): Add prototype.

From-SVN: r26413