[PATCH][x86] Enable broadwell march to llvm/clang

[Nadav Rotem]

The LLVM patches LGTM.  Thanks Robert!


> On Aug 20, 2014, at 8:55 AM, Robert Khasanov <rob.khasanov at gmail.com> wrote:
> 
> Hi All,
> 
> These patches enable Broadwell subtarget:
> Broadwell ISA includes Haswell ISA + ADX + RDSEED + SMAP
> New instructions were already enabled. These patches define broadwell cpu, SMAP Feature and add intrinsics to LLVM/clang
> <001_llvm_broadwell_target.patch><002_llvm_adox_adcx.patch><003_llvm_smap.patch><004_llvm_adc_sbb.patch><005_clang_broadwell_target.patch><006_clang_adx.patch><007_clang_adc_sbb.patch>