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[PATCH, i386]: Implement PR 71246, Missing built-in functions for float128 NaNs

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 Biener <rguenther at suse dot de>
Date: Fri, 10 Jun 2016 19:45:59 +0200
Subject: [PATCH, i386]: Implement PR 71246, Missing built-in functions for float128 NaNs
Authentication-results: sourceware.org; auth=none

Hello!

Attached patch implements __builtin_nanq and __builtin_nansq
__float128 functions.

2016-06-10  Uros Bizjak  <ubizjak@gmail.com>

    PR target/71241
    * config/i386/i386.i386-builtin-types.def (CONST_STRING):
    New primitive type.
    (FLOAT128_FTYPE_CONST_STRING): New function type.
    * config/i386/i386.c (enum ix86_builtins) [IX86_BUILTIN_NANQ]: New.
    [IX86_BUILTIN_NANSQ]: Ditto.
    (ix86_fold_builtin): Handle IX86_BUILTIN_NANQ and IX86_BUILTIN_NANSQ.
    (ix86_init_builtin_types) Declare const_string_type_node.
    Add __builtin_nanq and __builtin_nansq builtin functions.
    (ix86_expand_builtin): Handle IX86_BUILTIN_NANQ and IX86_BUILTIN_NANSQ.
    * doc/extend.texi (x86 Built-in Functions): Document
    __builtin_nanq and __builtin_nansq.

Patch was bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

Joseph, does it look OK to you? Richi, I hope I got tree stuff
implemented correctly.

Uros.

Attachment: p.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH, i386]: Implement PR 71246, Missing built-in functions for float128 NaNs
  - From: Joseph Myers
- Re: [PATCH, i386]: Implement PR 71246, Missing built-in functions for float128 NaNs
  - From: Richard Biener

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