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Re: [Patch] Add support for IEEE-conformant versions of scalar fmin* and fmax*
- From: Joseph Myers <joseph at codesourcery dot com>
- To: David Sherwood <david dot sherwood at arm dot com>
- Cc: <gcc-patches at gcc dot gnu dot org>
- Date: Mon, 29 Jun 2015 17:35:45 +0000
- Subject: Re: [Patch] Add support for IEEE-conformant versions of scalar fmin* and fmax*
- Authentication-results: sourceware.org; auth=none
- References: <000001d0b245$d1004dd0$7300e970$ at arm dot com>
On Mon, 29 Jun 2015, David Sherwood wrote:
> Hi,
>
> I have added new STRICT_MAX_EXPR and STRICT_MIN_EXPR expressions to support the
> IEEE versions of fmin and fmax. This is done by recognising the math library
> "fmax" and "fmin" builtin functions in a similar way to how this is done for
> -ffast-math. This also allows us to vectorise the IEEE max/min functions for
> targets that support it, for example aarch64/aarch32.
This patch is missing documentation. You need to document the new insn
patterns in md.texi and the new tree codes in generic.texi.
--
Joseph S. Myers
joseph@codesourcery.com