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Re: GAS .fpu directive
- From: Peter Bergner <bergner at vnet dot ibm dot com>
- To: Richard Earnshaw <rearnsha at arm dot com>
- Cc: Nicholas Clifton <nickc at redhat dot com>, Renato Golin <renato dot golin at linaro dot org>, "binutils at sourceware dot org" <binutils at sourceware dot org>
- Date: Wed, 20 Aug 2014 11:51:24 -0500
- Subject: Re: GAS .fpu directive
- Authentication-results: sourceware.org; auth=none
- References: <CAMSE1keWd0+uUS0fpaC3-yXsnN-z2_Bsa5anwvQAQwXgWuw_Yw at mail dot gmail dot com> <53F4C261 dot 8090900 at redhat dot com> <53F4CB31 dot 9080701 at arm dot com>
On Wed, 2014-08-20 at 17:22 +0100, Richard Earnshaw wrote:
> Actually, I can think of use cases for this 'feature'. Consider a
> function that will only be called when it is known that an ISA extension
> is present (specifically, Neon). We then might want most of the code to
> be marked as no-neon, but then to enable Neon for that function only.
I also forgot about GCC's function specific optimization support
which would require this:
https://gcc.gnu.org/wiki/FunctionSpecificOpt
Peter