From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Fuerst Subject: [PATCH 4/3] Annotate int2float() as being a pure function. Date: Mon, 6 Aug 2012 16:42:16 -0700 Message-ID: <1344296536-27985-1-git-send-email-svfuerst@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-yx0-f177.google.com (mail-yx0-f177.google.com [209.85.213.177]) by gabe.freedesktop.org (Postfix) with ESMTP id E3A759E7D5 for ; Mon, 6 Aug 2012 16:42:28 -0700 (PDT) Received: by yenr9 with SMTP id r9so3398699yen.36 for ; Mon, 06 Aug 2012 16:42:28 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: dri-devel@lists.freedesktop.org Cc: Steven Fuerst List-Id: dri-devel@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 7c748ba..e3c2d48 100644 --- a/drivers/gpu/drm/radeon/r600_blit.c +++ b/drivers/gpu/drm/radeon/r600_blit.c @@ -501,7 +501,7 @@ set_default_state(drm_radeon_private_t *dev_priv) * This routine depends on the mod(32) behaviour of the rotate instructions * on x86. */ -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 -- 1.7.10.4