Hi, i386 maintainers - Is this patch ok?
Thanks, -Sri. On Mon, Apr 2, 2012 at 5:48 PM, Sriraman Tallam <tmsri...@google.com> wrote: > On Mon, Apr 2, 2012 at 5:38 AM, Richard Guenther > <richard.guent...@gmail.com> wrote: >> On Sat, Mar 31, 2012 at 1:03 AM, Sriraman Tallam <tmsri...@google.com> wrote: >>> On Fri, Mar 30, 2012 at 5:47 AM, Michael Matz <m...@suse.de> wrote: >>>> Hi, >>>> >>>> On Thu, 29 Mar 2012, Sriraman Tallam wrote: >>>> >>>>> +struct __processor_model >>>>> +{ >>>>> + /* Vendor. */ >>>>> + unsigned int __cpu_is_amd : 1; >>>>> + unsigned int __cpu_is_intel : 1; >>>>> + /* CPU type. */ >>>>> + unsigned int __cpu_is_intel_atom : 1; >>>>> + unsigned int __cpu_is_intel_core2 : 1; >>>>> + unsigned int __cpu_is_intel_corei7 : 1; >>>>> + unsigned int __cpu_is_intel_corei7_nehalem : 1; >>>>> + unsigned int __cpu_is_intel_corei7_westmere : 1; >>>>> + unsigned int __cpu_is_intel_corei7_sandybridge : 1; >>>>> + unsigned int __cpu_is_amdfam10h : 1; >>>>> + unsigned int __cpu_is_amdfam10h_barcelona : 1; >>>>> + unsigned int __cpu_is_amdfam10h_shanghai : 1; >>>>> + unsigned int __cpu_is_amdfam10h_istanbul : 1; >>>>> + unsigned int __cpu_is_amdfam15h_bdver1 : 1; >>>>> + unsigned int __cpu_is_amdfam15h_bdver2 : 1; >>>>> +} __cpu_model; >>>> >>>> It doesn't make sense for the model to be a bitfield, a processor will >>>> have only ever exactly one model. Just make it an enum or even just an >>>> int. >>> >>> Not entirely true, nehalem and corei7 can be both set. However, I >>> modified this by dividing it into types and sub types and then did >>> what you said. >> >> Uh... then I suppose you need to document somewhere what names >> match to what cpuid family/model (supposedly thats where your two-layer >> hierarchy comes from, which incidentially misses one layer, the vendor?) > > Added documentation to extend.texi > > Patch available for review here: > http://codereview.appspot.com/5754058 > > Thanks, > -Sri. > > >> >> Richard. >> >>> * config/i386/i386.c (build_processor_features_struct): New function. >>> (build_processor_model_struct): New function. >>> (make_var_decl): New function. >>> (get_field_from_struct): New function. >>> (fold_builtin_target): New function. >>> (ix86_fold_builtin): New function. >>> (ix86_expand_builtin): Expand new builtins by folding them. >>> (make_cpu_type_builtin): New functions. >>> (ix86_init_platform_type_builtins): Make the new builtins. >>> (ix86_init_builtins): Make new builtins to detect CPU type. >>> (TARGET_FOLD_BUILTIN): New macro. >>> (IX86_BUILTIN_CPU_INIT): New enum value. >>> (IX86_BUILTIN_CPU_IS): New enum value. >>> (IX86_BUILTIN_CPU_SUPPORTS): New enum value. >>> * config/i386/i386-builtin-types.def: New function type. >>> * testsuite/gcc.target/builtin_target.c: New testcase. >>> >>> * libgcc/config/i386/i386-cpuinfo.c: New file. >>> * libgcc/config/i386/t-cpuinfo: New file. >>> * libgcc/config.host: Include t-cpuinfo. >>> * libgcc/config/i386/libgcc-glibc.ver: Version symbols __cpu_model >>> and __cpu_features. >>> >>> Patch available for review here: >>> http://codereview.appspot.com/5754058 >>> >>> Thanks, >>> -Sri. >>> >>> >>>> >>>> >>>> Ciao, >>>> Michael.