Support new Intel processor model numbers

gcc/

	* config/i386/driver-i386.c (host_detect_local_cpu): Check new
	Silvermont, Haswell, Broadwell and Knights Landing model numbers.
	* config/i386/i386.c (processor_model): Add
	M_INTEL_COREI7_BROADWELL.
	(arch_names_table): Add "broadwell".

gcc/testsuite/

	* gcc.target/i386/builtin_target.c (check_intel_cpu_model): Add
	Silvermont, Ivy Bridge, Haswell and Broadwell tests.  Update Sandy
	Bridge test.

2015-01-24  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/cpuinfo.c (processor_subtypes): Add
	INTEL_COREI7_BROADWELL.
	(get_intel_cpu): Support new Silvermont, Haswell and Broadwell
	model numbers.

From-SVN: r220090