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[patch, ARM] Avoid enlarged alignment when optimizing for size

From: Chung-Lin Tang <cltang at codesourcery dot com>
To: gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 30 Sep 2010 01:21:31 +0800
Subject: [patch, ARM] Avoid enlarged alignment when optimizing for size

Hi, this patch adds guard conditions to the DATA/LOCAL_ALIGNMENT macros, to turn off the BITS_PER_WORD enlarging of data alignment when optimizing for size/conserving stack space.

This corresponds to Linaro bug #640544
https://bugs.launchpad.net/gcc-linaro/+bug/640544

Okay for trunk?

Thanks,
Chung-Lin

    * config/arm/arm.h (ARM_EXPAND_ALIGNMENT): Rename from
    DATA_ALIGNMENT and add COND parameter.
    (DATA_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with !optimize_size.
    (LOCAL_ALIGNMENT): Use ARM_EXPAND_ALIGNMENT, with
    !flag_conserve_stack.

Attachment: arm-align.diff
Description: Text document

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