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[PATCH, middle-end/i386]: Fix PR88474, Inline built-in hypot for -ffast-math

From: Uros Bizjak <ubizjak at gmail dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: "Joseph S. Myers" <joseph at codesourcery dot com>, Richard Guenther <rguenther at suse dot de>
Date: Fri, 14 Dec 2018 08:52:01 +0100
Subject: [PATCH, middle-end/i386]: Fix PR88474, Inline built-in hypot for -ffast-math

Attached patch inlines calls to hypotf and hypot using x87 XFmode arithmetic.

2018-12-14  Uros Bizjak  <ubizjak@gmail.com>

    PR target/88474
    * internal-fn.def (HYPOT): New.
    * optabs.def (hypot_optab): New.
    * config/i386/i386.md (hypot<mode>3): New expander.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

There are a couple of one-liners in middle-end part, so patch also
needs middle-end approval.

OK for mainline?

Uros.

Attachment: p.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH, middle-end/i386]: Fix PR88474, Inline built-in hypot for -ffast-math
  - From: Richard Biener

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