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[Google/4-8] Support for user-guided feedback-directed library optimization

From: Teresa Johnson <tejohnson at google dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, David Li <davidxl at google dot com>
Cc: Jan Hubicka <hubicka at ucw dot cz>
Date: Fri, 9 May 2014 13:50:45 -0700
Subject: [Google/4-8] Support for user-guided feedback-directed library optimization
Authentication-results: sourceware.org; auth=none

The attached patch adds support for user-guided feedback-directed
library optimization, for google/gcc-4_8 initially (to be ported to
google/gcc-4_9).

Cc'ing Honza for any comments since I would eventually like to send
this and follow-on work to trunk.

Patch to add support for user-guided feedback-directed library optimization.

Contains support for builtins and attributes for specifying user-supplied
routines for initializing, updating and analyzing profile counters during
profile collection runs, and for feeding back macro values via a new
parameter section in the gcda file.

Passes regression tests. Ok for google branches?

Thanks,
Teresa

-- 
Teresa Johnson | Software Engineer | tejohnson@google.com | 408-460-2413

Attachment: patch.diff
Description: Text document

Follow-Ups:
- Re: [Google/4-8] Support for user-guided feedback-directed library optimization
  - From: Andi Kleen
- Re: [Google/4-8] Support for user-guided feedback-directed library optimization
  - From: Xinliang David Li

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