From: kugan <kugan.vivekanandarajah@linaro.org>
To: Andrew Pinski <pinskia@gmail.com>
Cc: "gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,
Richard Biener <richard.guenther@gmail.com>,
Jan Hubicka <hubicka@ucw.cz>, Martin Jambor <mjambor@suse.cz>
Subject: Re: [RFC][IPA-VRP] Check for POINTER_TYPE_P before accessing SSA_NAME_PTR_INFO in tree-inline
Date: Fri, 15 Jul 2016 07:03:00 -0000 [thread overview]
Message-ID: <57888A9A.7090706@linaro.org> (raw)
In-Reply-To: <CA+=Sn1n4BEErHYiQ5F3NDuZqNChBn0S9Z6BNro5JXY+BxG=3tw@mail.gmail.com>
Hi Andrew,
>> This patch adds check for POINTER_TYPE_P before accessing SSA_NAME_PTR_INFO
>> in remap_ssa_name in gcc/tree-inline.c. This is not related to IPA_VRP but
>> was exposed by that.
>
> SSA_NAME_PTR_INFO should be NULL for non POINTER_TYPE ssa names? Why
> is it not null in your case?
> In both cases there is a check for SSA_NAME_PTR_INFO being NULL before using it.
As per tree.h:
#define SSA_NAME_PTR_INFO(N) \
SSA_NAME_CHECK (N)->ssa_name.info.ptr_info
#define SSA_NAME_RANGE_INFO(N) \
SSA_NAME_CHECK (N)->ssa_name.info.range_info
ptr_info and range_info are unions (see below). Unless I am missing
something, now that we set range_info, we should check it is
POINTER_TYPE_P before accessing.
/* Value range information. */
union ssa_name_info_type {
/* Pointer attributes used for alias analysis. */
struct GTY ((tag ("0"))) ptr_info_def *ptr_info;
/* Value range attributes used for zero/sign extension elimination. */
struct GTY ((tag ("1"))) range_info_def *range_info;
} GTY ((desc ("%1.typed.type ?" \
"!POINTER_TYPE_P (TREE_TYPE ((tree)&%1)) : 2"))) info;
Thanks,
Kugan
next prev parent reply other threads:[~2016-07-15 7:03 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-15 4:41 [RFC][IPA-VRP] IPA VRP Implementation kugan
2016-07-15 4:42 ` [RFC][IPA-VRP] Disable setting param of __builtin_constant_p to null kugan
2016-07-15 8:43 ` Jan Hubicka
2016-07-25 6:59 ` kugan
2016-07-25 10:02 ` Richard Biener
2016-07-15 4:43 ` [RFC][IPA-VRP] Check for POINTER_TYPE_P before accessing SSA_NAME_PTR_INFO in tree-inline kugan
2016-07-15 4:47 ` Andrew Pinski
2016-07-15 7:03 ` kugan [this message]
2016-07-15 7:03 ` Jakub Jelinek
2016-07-15 7:32 ` Richard Biener
2016-07-15 4:44 ` [RFC][IPA-VRP] Re-factor tree-vrp to factor out common code kugan
2016-07-15 4:47 ` [RFC][IPA-VRP] Add support for IPA VRP in ipa-cp/ipa-prop kugan
2016-07-15 12:23 ` Martin Jambor
2016-07-19 8:22 ` kugan
2016-07-19 21:27 ` kugan
2016-07-21 12:54 ` Jan Hubicka
2016-08-30 5:21 ` Kugan Vivekanandarajah
2016-08-30 18:12 ` Prathamesh Kulkarni
2016-08-30 21:10 ` kugan
2016-09-02 12:31 ` Jan Hubicka
2016-07-17 13:24 ` Prathamesh Kulkarni
2016-07-22 12:27 ` [RFC][IPA-VRP] Re-factor tree-vrp to factor out common code kugan
2016-07-22 12:49 ` Richard Biener
2016-07-22 14:34 ` kugan
2016-07-23 10:12 ` kugan
2016-08-16 8:09 ` kugan
2016-08-16 11:56 ` Richard Biener
2016-08-16 22:20 ` kugan
2016-08-17 2:50 ` kugan
2016-08-17 13:46 ` Richard Biener
2016-07-15 4:45 ` [RFC][IPA-VRP] Early VRP Implementation kugan
2016-07-15 4:52 ` Andrew Pinski
2016-07-15 7:08 ` kugan
2016-07-15 7:28 ` Andrew Pinski
2016-07-15 7:33 ` kugan
2016-07-18 11:51 ` Richard Biener
2016-07-22 12:10 ` kugan
2016-07-25 11:18 ` Richard Biener
2016-07-26 12:27 ` kugan
2016-07-26 13:37 ` Richard Biener
2016-07-28 7:36 ` kugan
2016-07-28 11:34 ` Richard Biener
2016-08-03 1:17 ` kugan
2016-08-12 10:43 ` Richard Biener
2016-08-16 7:39 ` [RFC][IPA-VRP] splits out the update_value_range calls from vrp_visit_stmt kugan
2016-08-16 10:58 ` Richard Biener
2016-08-17 2:27 ` kugan
2016-08-17 13:44 ` Richard Biener
2016-08-16 7:45 ` [RFC][IPA-VRP] Early VRP Implementation kugan
2016-08-19 11:41 ` Richard Biener
2016-08-23 2:12 ` Kugan Vivekanandarajah
2016-09-02 8:11 ` Kugan Vivekanandarajah
2016-09-14 12:11 ` Richard Biener
2016-09-14 21:47 ` Jan Hubicka
2016-09-15 7:23 ` Richard Biener
2016-09-15 14:57 ` Jeff Law
2016-09-16 8:59 ` Richard Biener
2016-09-16 6:37 ` kugan
2016-09-16 10:26 ` Richard Biener
2016-09-18 23:40 ` kugan
2016-09-19 13:30 ` Richard Biener
2016-09-20 5:48 ` kugan
2016-07-19 16:19 ` Jeff Law
2016-07-19 18:35 ` Richard Biener
2016-07-19 20:14 ` Jeff Law
2016-07-15 4:47 ` [RFC][IPA-VRP] Teach tree-vrp to use the VR set in params kugan
2016-07-18 11:33 ` Richard Biener
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