* doc/invoke.texi (PowerPC Options): Document 'native' cpu type.
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2018-01-25 David Edelsohn <dje.gcc@gmail.com>
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* doc/invoke.texi (PowerPC Options): Document 'native' cpu type.
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2018-01-25 Jan Hubicka <hubicka@ucw.cz>
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PR middle-end/83055
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@ -22333,7 +22333,7 @@ Supported values for @var{cpu_type} are @samp{401}, @samp{403},
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@samp{titan}, @samp{power3}, @samp{power4}, @samp{power5}, @samp{power5+},
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@samp{power6}, @samp{power6x}, @samp{power7}, @samp{power8},
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@samp{power9}, @samp{powerpc}, @samp{powerpc64}, @samp{powerpc64le},
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and @samp{rs64}.
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@samp{rs64}, and @samp{native}.
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@option{-mcpu=powerpc}, @option{-mcpu=powerpc64}, and
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@option{-mcpu=powerpc64le} specify pure 32-bit PowerPC (either
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@ -22341,6 +22341,12 @@ endian), 64-bit big endian PowerPC and 64-bit little endian PowerPC
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architecture machine types, with an appropriate, generic processor
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model assumed for scheduling purposes.
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Specifying @samp{native} as cpu type detects and selects the
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architecture option that corresponds to the host processor of the
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system performing the compilation.
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@option{-march=native} has no effect if GCC does not recognize the
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processor.
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The other options specify a specific processor. Code generated under
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those options runs best on that processor, and may not run at all on
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others.
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