config.gcc: Support "tremont".

config.gcc: Support "tremont".

2018-06-07  Olga Makhotina  <olga.makhotina@intel.com>

gcc/

        * config.gcc: Support "tremont".
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect "tremont".
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        PROCESSOR_TREMONT.
        * config/i386/i386.c (m_TREMONT): Define.
        (processor_target_table): Add "tremont".
        (PTA_TREMONT): Define.
        (ix86_lea_outperforms): Add TARGET_TREMONT.
        (get_builtin_code_for_version): Handle PROCESSOR_TREMONT.
        (fold_builtin_cpu): Add M_INTEL_TREMONT, replace M_INTEL_GOLDMONT
        and M_INTEL_GOLDMONT_PLUS.
        (fold_builtin_cpu): Add "tremont".
        (ix86_add_stmt_cost): Add TARGET_TREMONT.
        (ix86_option_override_internal): Add "tremont".
        * config/i386/i386.h (processor_costs): Define TARGET_TREMONT.
        (processor_type): Add PROCESSOR_TREMONT.
        * config/i386/x86-tune.def: Add m_TREMONT.
        * doc/invoke.texi: Add tremont as x86 -march=/-mtune= CPU type.

gcc/testsuite/

        * gcc.target/i386/funcspec-56.inc: Test arch=tremont.

libgcc/

        * config/i386/cpuinfo.h (processor_types): Add INTEL_TREMONT.

From-SVN: r261270