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Clarify .arch_extension possible values

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Documentation for .arch_extension says it accepts the same architectural
extensions as those accepted by -mcpu. Given the name and the fact that
-march for obvious reason also accept the same extensions, I believe
it's worth mentioning that it accepts the same extensions as both
-march and -mcpu. This commit addresses that.

2018-02-20  Thomas Preud'homme  <thomas.preudhomme@arm.com>

gas/
	* doc/c-arm.texi (.arch_extension): Mention extensions it accepts are
	also the same as -march.
This commit is contained in:
Thomas Preud'homme 2018-02-20 12:48:50 +00:00
parent a543c5ca7c
commit 8811c8f495
2 changed files with 6 additions and 1 deletions
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gas/ChangeLog
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@ -1,3 +1,8 @@
2018-02-20 Thomas Preud'homme <thomas.preudhomme@arm.com>
* doc/c-arm.texi (.arch_extension): Mention extensions it accepts are
also the same as -march.
2018-02-17 H.J. Lu <hongjiu.lu@intel.com>
* NEWS: Mention .nop directive.

2
gas/doc/c-arm.texi
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@ -631,7 +631,7 @@ extensions.
@item .arch_extension @var{name}
Add or remove an architecture extension to the target architecture. Valid
values for @var{name} are the same as those accepted as architectural
extensions by the @option{-mcpu} commandline option.
extensions by the @option{-mcpu} and @option{-march} commandline options.
@code{.arch_extension} may be used multiple times to add or remove extensions
incrementally to the architecture being compiled for.