Don't generate multi-byte NOPs for i686.

Don't generate multi-byte NOPs for i686.

gas/

2010-08-06  Quentin Neill <quentin.neill@amd.com>

	* config/tc-i386.c (arch_entry): Add negated bit to
	  disambiguate flag names starting with "no".
	  (cpu_arch): Add negated bit definitions.  Add
	  ".nop" CPU extension.
	  (i386_align_code): Use new .cpunop bit to decide
	  when to generate alignment using nops.
	  (set_cpu_arch): Use negated bit instead to decide
	  when to use cpu_flags or vs. cpu_flags_and_not.
	  (md_parse_option): Likewise.

gas/testsuite/

2010-08-06  Quentin Neill <quentin.neill@amd.com>

	* gas/i386/arch-10-1.l: Add nopl instruction.
	* gas/i386/arch-10-2.l: Likewise.
	* gas/i386/arch-10-3.l: Likewise.
	* gas/i386/arch-10-4.l: Likewise.
	* gas/i386/arch-10.s: Likewise.
	* gas/i386/arch-10.d: Add nopl instruction, and +nopl extension
	flag to as flags.
	* gas/i386/nops-5-i686.d: Change alignment code generated for
	-mtune=i686.
	* gas/i386/nops-5.d: Change alignment code generated for
	.arch i686.
	* gas/i386/x86-64-nops-5-k8.d: Likewise.
	* gas/i386/x86-64-nops-5.d: Likewise.

opcodes/

2010-08-06  Quentin Neill <quentin.neill@amd.com>

	* i386-gen.c (cpu_flag_init): Define CpuNop extension flag, add
	to processor flags for PENTIUMPRO processors and later.
	* i386-opc.h (enum): Add CpuNop.
	(i386_cpu_flags): Add cpunop bit.
	* i386-opc.tbl: Change nop cpu_flags.
	* i386-init.h: Regenerated.
	* i386-tbl.h: Likewise.