From patchwork Sat Aug 11 17:30:22 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Fuerst X-Patchwork-Id: 1311711 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork1.kernel.org (Postfix) with ESMTP id F02F03FC23 for ; Mon, 13 Aug 2012 10:17:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D1D509F0FF for ; Mon, 13 Aug 2012 03:17:46 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pb0-f49.google.com (mail-pb0-f49.google.com [209.85.160.49]) by gabe.freedesktop.org (Postfix) with ESMTP id B963A9E841 for ; Sat, 11 Aug 2012 10:31:02 -0700 (PDT) Received: by mail-pb0-f49.google.com with SMTP id rq8so3434428pbb.36 for ; Sat, 11 Aug 2012 10:31:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=29VFcOjtKwWTbnjOyLa5F30AMlT7vUKq7T/4bgf7Qjs=; b=dcAiBp8eO50ZISCOI1bPpFhSnm3Xp8i+Lch5GVEmpzY1t6dOTsNhH+1l9Ram4FNhLR vofArtx87af4RGAIbkKrhLOCCxbvomy9X4aWnXhfv3s5OXCoBkoTOHt62rW4eyRF8NNB QjDIEDZZ7pYvQkNzA5C2OX9XWjh9NXDT/XWox9Gg/OZi1TwdP728dZIF5JPsMbdftHNs rTnrAoOv0h3ZzdorPJVi+DuPiTpRLMFXM4KKRtsWpV+llRmGMMrcaIuSvTGmuZmbkQih 4IDRkYR1b/et+pKalM4FHqJ2QejNS+M5z6WLt2QtF7LLL13JLW+EMs92DEY2gsTl5bNX pwpw== Received: by 10.68.232.103 with SMTP id tn7mr7106316pbc.86.1344706262541; Sat, 11 Aug 2012 10:31:02 -0700 (PDT) Received: from localhost.localdomain (c-24-18-84-54.hsd1.wa.comcast.net. [24.18.84.54]) by mx.google.com with ESMTPS id pn4sm1729323pbb.50.2012.08.11.10.31.01 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 11 Aug 2012 10:31:02 -0700 (PDT) From: Steven Fuerst To: dri-devel@lists.freedesktop.org Subject: [Patch v2 4/4] Annotate int2float() as being a pure function. Date: Sat, 11 Aug 2012 10:30:22 -0700 Message-Id: <1344706222-3018-4-git-send-email-svfuerst@gmail.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1344706222-3018-1-git-send-email-svfuerst@gmail.com> References: <1344706222-3018-1-git-send-email-svfuerst@gmail.com> X-Mailman-Approved-At: Mon, 13 Aug 2012 03:12:13 -0700 Cc: Steven Fuerst X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org This allows gcc to fold duplicate calls into a single call. Since the current users do actually call it multiple times with the same arguments, this is an obvious win. --- drivers/gpu/drm/radeon/r600_blit.c | 2 +- drivers/gpu/drm/radeon/r600_blit_shaders.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/r600_blit.c b/drivers/gpu/drm/radeon/r600_blit.c index 54980d8..b4304288 100644 --- a/drivers/gpu/drm/radeon/r600_blit.c +++ b/drivers/gpu/drm/radeon/r600_blit.c @@ -499,7 +499,7 @@ set_default_state(drm_radeon_private_t *dev_priv) * as the fractional bits will not fit in a float. (It would be better to * round towards even as the fpu does, but that is slower.) */ -uint32_t int2float(uint32_t x) +__pure uint32_t int2float(uint32_t x) { uint32_t msb, exponent, fraction; diff --git a/drivers/gpu/drm/radeon/r600_blit_shaders.h b/drivers/gpu/drm/radeon/r600_blit_shaders.h index e17c2cb..2f3ce7a 100644 --- a/drivers/gpu/drm/radeon/r600_blit_shaders.h +++ b/drivers/gpu/drm/radeon/r600_blit_shaders.h @@ -35,5 +35,5 @@ extern const u32 r6xx_default_state[]; extern const u32 r6xx_ps_size, r6xx_vs_size; extern const u32 r6xx_default_size, r7xx_default_size; -uint32_t int2float(uint32_t x); +__pure uint32_t int2float(uint32_t x); #endif