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Date: Tue, 03 Jun 2014 09:33:00 -0000
Message-ID: <CAFiYyc2OE8hPLoLkYJwz6pxQKWWA=dvq8-HqNWxZjeAXWQigAg@mail.gmail.com>
Subject: Re: [PATCH, Pointer Bounds Checker 24/x] PRE
From: Richard Biener <richard.guenther@gmail.com>
To: Ilya Enkovich <enkovich.gnu@gmail.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>
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On Tue, Jun 3, 2014 at 9:13 AM, Ilya Enkovich <enkovich.gnu@gmail.com> wrote:
> Hi,
>
> This patch preserves CALL_WITH_BOUNDS flag for calls during PRE.

Ok.

Richard.

> Bootstrapped and tested on linux-x86_64.
>
> Thanks,
> Ilya
> --
> gcc/
>
> 2014-06-03  Ilya Enkovich  <ilya.enkovich@intel.com>
>
>         * tree-ssa-pre.c (create_component_ref_by_pieces_1): Store
>         CALL_WITH_BOUNDS_P for calls.
>         (copy_reference_ops_from_call): Restore CALL_WITH_BOUNDS_P
>         flag.
>
>
> diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c
> index 1e55356..d5b9f3b 100644
> --- a/gcc/tree-ssa-pre.c
> +++ b/gcc/tree-ssa-pre.c
> @@ -2579,6 +2579,8 @@ create_component_ref_by_pieces_1 (basic_block block, vn_reference_t ref,
>                                    (TREE_CODE (fn) == FUNCTION_DECL
>                                     ? build_fold_addr_expr (fn) : fn),
>                                    nargs, args);
> +       if (currop->op2 == integer_one_node)
> +         CALL_WITH_BOUNDS_P (folded) = true;
>         free (args);
>         if (sc)
>           CALL_EXPR_STATIC_CHAIN (folded) = sc;
> diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
> index f7ec8b6..e83d9dc 100644
> --- a/gcc/tree-ssa-sccvn.c
> +++ b/gcc/tree-ssa-sccvn.c
> @@ -1124,6 +1124,8 @@ copy_reference_ops_from_call (gimple call,
>    temp.opcode = CALL_EXPR;
>    temp.op0 = gimple_call_fn (call);
>    temp.op1 = gimple_call_chain (call);
> +  if (gimple_call_with_bounds_p (call))
> +    temp.op2 = integer_one_node;
>    temp.off = -1;
>    result->safe_push (temp);
>