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[middle-end,patch] Making __builtin_signbit type-generic

From: FX <fxcoudert at gmail dot com>
To: gcc-patches <gcc-patches at gcc dot gnu dot org>
Cc: Uros Bizjak <ubizjak at gmail dot com>, Joseph Myers <joseph at codesourcery dot com>
Date: Mon, 17 Aug 2015 22:14:32 +0200
Subject: [middle-end,patch] Making __builtin_signbit type-generic
Authentication-results: sourceware.org; auth=none
References: <BB1A5070-5A21-4393-A5B8-0C320B020902 at gmail dot com> <alpine dot DEB dot 2 dot 10 dot 1508171522570 dot 29836 at digraph dot polyomino dot org dot uk>

Attached patch makes __builtin_signbit type-generic in the middle-end (PR 36757).
Error message will be issued (from gcc/c-family/c-common.c) if argument is not real (or too few, or too many).
gcc_assert() is used in expand_builtin_signbit() it cases that should be unreachable (failure to expand inline).

Tested on x86_64-apple-darwin14, OK to commit?

FX

Attachment: signbit.ChangeLog.txt
Description: Text document

Attachment: signbit.diff
Description: Binary data

Follow-Ups:
- Re: [middle-end,patch] Making __builtin_signbit type-generic
  - From: Jeff Law
- Re: [middle-end,patch] Making __builtin_signbit type-generic
  - From: Andreas Schwab

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