re PR target/29473 (-masm=intel combined with -march=athlon64 has some issues.)

re PR target/29473 (-masm=intel combined with -march=athlon64 has some issues.)

	PR target/29473
	PR target/29493
	* config/i386/i386.c (output_pic_addr_const): Support Intel asm syntax.
	(print_reg): Print register prefix only with AT&T asm syntax.
	Support pc_rtx for RIP register.
	(print_operand_address): Use print_reg()'s pc_rtx support for RIP
	relative addressing.  Always print segment register prefix with AT&T
	asm syntax and never with Intel asm syntax.
	(print_operand): Suppress 'XXX PTR' prefix for BLKmode operands.
	Fix prefix for 16-byte XFmode operands.
	(output_addr_const_extra): Support Intel asm syntax.
	(x86_file_start): Don't use register prefix with Intel asm syntax.
	* config/i386/i386.md ("*zero_extendqihi2_movzbl"): Fix typo.
	("return_internal_long"): Fix Intel asm syntax output.
	("set_got_rex64"): Support Intel asm syntax.
	("set_rip_rex64"): Likewise.
	("set_got_offset_rex64"): Likewise.
	("*sibcall_1_rex64_v"): Print register prefix only with AT&T asm
	syntax.
	("*tls_global_dynamic_64"): Likewise.
	("*tls_local_dynamic_base_64"): Likewise.
	("*load_tp_si")("*load_tp_di"): Likewise.
	("*add_tp_si")("*add_tp_di"): Likewise.
	("*tls_dynamic_lea_64"): Likewise.
	("*sibcall_value_1_rex64_v"): Likewise.
	("stack_tls_protect_set_si"): Likewise.
	("stack_tls_protect_set_di"): Likewise.
	("stack_tls_protect_test_si"): Likewise.
	("stack_tls_protect_test_di"): Likewise.
	* config/i386/mmx.md ("*mov<mode>_internal_rex64"): Fix Intel asm
	syntax output.
	("*movv2sf_internal_rex64"): Likewise.
	* config/i386/cpuid.h (__cpuid): Support Intel asm syntax.
	(__get_cpuid_max): Likewise.

From-SVN: r129548