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[PATCH] Fix PR 49671 volatile goes missing after inlining

From: Andrew Pinski <pinskia at gmail dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>, Richard Guenther <richard dot guenther at gmail dot com>
Date: Sun, 24 Jul 2011 16:34:21 -0700
Subject: [PATCH] Fix PR 49671 volatile goes missing after inlining

Hi,
  There are two issues, first the inliner does not copy a volatile
when creating a new tree in one case.  The second issue is that
IPA-SRA does not check if we are deferencing a pointer variable via a
volatile type.

OK?  Bootstrapped and tested on x86_64-linux-gnu with no regressions.

Thanks,
Andrew Pinski

ChangeLog:
* tree-inline.c (remap_gimple_op_r): Copy TREE_THIS_VOLATILE and
TREE_THIS_NOTRAP into the inner most MEM_REF.
Always copy TREE_THIS_VOLATILE.
* tree-sra.c (ptr_parm_has_direct_uses): Check that the lhs, rhs and
arguments are not volatile references.

Attachment: fixvolatile.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH] Fix PR 49671 volatile goes missing after inlining
  - From: Richard Guenther

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