[patch][x86] Split-up march icelake on march=icelake-server and march=icelake-client

[Koval, Julia]

Hi,
This patch introduces separate client and server arch options instead of 
-march=icelake. Ok for trunk?

Thanks,
Julia


gcc/
        * config.gcc (icelake-client, icelake-server): New.
        (icelake): Remove.
        * config/i386/i386.c (initial_ix86_tune_features): Extend to 64 bit.
        (initial_ix86_arch_features): Ditto.
        (ix86_option_override_internal): Split up icelake on icelake client and
        icelake server.
        (get_builtin_code_for_version): Ditto.
        (fold_builtin_cpu): Ditto.
        * config/i386/driver-i386.c (config/i386/driver-i386.c): Ditto.
        * config/i386/i386-c.c (ix86_target_macros_internal): Ditto
        * config/i386/i386.h (processor_type) Ditto.

gcc/testsuite/
        * g++.dg/ext/mv16.C: Split up icelake on icelake client and
        icelake-server.
        * gcc.target/i386/funcspec-56.inc: Ditto.
        
libgcc/
        * config/i386/cpuinfo.h (processor_subtypes): Split up icelake on 
icelake 
        client and icelake-server.

0001-icelake-client.patch
Description: 0001-icelake-client.patch