config.gcc: Support "goldmont-plus".

config.gcc: Support "goldmont-plus".

2018-05-17  Olga Makhotina  <olga.makhotina@intel.com>

gcc/

	* config.gcc: Support "goldmont-plus".
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect
	"goldmont-plus".
	* config/i386/i386-c.c (ix86_target_macros_internal): Handle
	PROCESSOR_GOLDMONT_PLUS.
	* config/i386/i386.c (m_GOLDMONT_PLUS): Define.
	(processor_target_table): Add "goldmont-plus".
	(PTA_GOLDMONT_PLUS): Define.
	(ix86_lea_outperforms): Add TARGET_GOLDMONT_PLUS.
	(get_builtin_code_for_version): Handle PROCESSOR_GOLDMONT_PLUS.
	(fold_builtin_cpu): Add M_INTEL_GOLDMONT_PLUS.
	(fold_builtin_cpu): Add "goldmont-plus".
	(ix86_add_stmt_cost): Add TARGET_GOLDMONT_PLUS.
	(ix86_option_override_internal): Add "goldmont-plus".
	* config/i386/i386.h (processor_costs): Define TARGET_GOLDMONT_PLUS.
	(processor_type): Add PROCESSOR_GOLDMONT_PLUS.
	* config/i386/x86-tune.def: Add m_GOLDMONT_PLUS.
	* doc/invoke.texi: Add goldmont-plus as x86 -march=/-mtune= CPU type.

libgcc/

	* config/i386/cpuinfo.h (processor_types): Add INTEL_GOLDMONT_PLUS.
	* config/i386/cpuinfo.c (get_intel_cpu): Detect Goldmont Plus.

gcc/testsuite/

	* gcc.target/i386/builtin_target.c: Test goldmont-plus.
	* gcc.target/i386/funcspec-56.inc: Test arch=goldmont-plus.

From-SVN: r260307