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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/102162] Byte-wise access optimized away at -O1 and above
Date: Wed, 01 Sep 2021 23:45:07 +0000 [thread overview]
Message-ID: <bug-102162-4-8uvgjxkAig@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-102162-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102162
--- Comment #19 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Gimple level does look correct:
<component_ref 0x7ffff7359300
type <integer_type 0x7ffff7315b28 u32 readonly unsigned SI
size <integer_cst 0x7ffff7244b40 constant 32>
unit-size <integer_cst 0x7ffff7244b58 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7315bd0 precision:32 min <integer_cst 0x7ffff7244b70 0> max <integer_cst
0x7ffff7244b28 4294967295> context <translation_unit_decl 0x7ffff733e870 t.c>>
readonly
arg:0 <mem_ref 0x7ffff735b2f8
type <record_type 0x7ffff73159d8 readonly no-force-blk packed type_0
BLK size <integer_cst 0x7ffff7244b40 32> unit-size <integer_cst 0x7ffff7244b58
4>
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff73159d8
attributes <tree_list 0x7ffff732bd20
purpose <identifier_node 0x7ffff7344690 packed>> fields
<field_decl 0x7ffff725ebe0 x> context <block 0x7ffff7338420>
pointer_to_this <pointer_type 0x7ffff7315a80>>
arg:0 <addr_expr 0x7ffff73326e0 type <pointer_type 0x7ffff7315888>
constant arg:0 <var_decl 0x7ffff7ff6120 output_len>
t.c:17:9 start: t.c:17:9 finish: t.c:17:39>
arg:1 <integer_cst 0x7ffff733bf00 constant 0>>
arg:1 <field_decl 0x7ffff725ebe0 x
type <integer_type 0x7ffff7315738 u32 unsigned SI size <integer_cst
0x7ffff7244b40 32> unit-size <integer_cst 0x7ffff7244b58 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7251690 precision:32 min <integer_cst 0x7ffff7244b70 0> max <integer_cst
0x7ffff7244b28 4294967295> context <translation_unit_decl 0x7ffff733e870 t.c>
pointer_to_this <pointer_type 0x7ffff7315888>>
unsigned packed SI t.c:12:33 size <integer_cst 0x7ffff7244b40 32>
unit-size <integer_cst 0x7ffff7244b58 4>
align:8 warn_if_not_align:0 offset_align 128
offset <integer_cst 0x7ffff7244930 constant 0>
bit-offset <integer_cst 0x7ffff7244948 constant 0> context <record_type
0x7ffff7315930>>
t.c:12:103 start: t.c:12:97 finish: t.c:12:105>
The var_decl too:
(gdb) p debug_tree(0x7ffff7ff6120)
<var_decl 0x7ffff7ff6120 output_len
type <integer_type 0x7ffff7315738 u32 unsigned SI
size <integer_cst 0x7ffff7244b40 constant 32>
unit-size <integer_cst 0x7ffff7244b58 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff7251690 precision:32 min <integer_cst 0x7ffff7244b70 0> max <integer_cst
0x7ffff7244b28 4294967295> context <translation_unit_decl 0x7ffff733e870 t.c>
pointer_to_this <pointer_type 0x7ffff7315888>>
addressable used public unsigned external read SI t.c:6:14 size
<integer_cst 0x7ffff7244b40 32> unit-size <integer_cst 0x7ffff7244b58 4>
user align:8 warn_if_not_align:0 context <translation_unit_decl
0x7ffff733e870 t.c>
attributes <tree_list 0x7ffff732bc30
purpose <identifier_node 0x7ffff7344500 aligned>
value <tree_list 0x7ffff732bbb8
value <integer_cst 0x7ffff7244cf0 constant 1>>> chain
<function_decl 0x7ffff7336a00 test>>
next prev parent reply other threads:[~2021-09-01 23:45 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-01 16:52 [Bug tree-optimization/102162] New: " danglin at gcc dot gnu.org
2021-09-01 18:52 ` [Bug tree-optimization/102162] " danglin at gcc dot gnu.org
2021-09-01 20:14 ` arnd at linaro dot org
2021-09-01 20:52 ` deller at gmx dot de
2021-09-01 20:56 ` dave.anglin at bell dot net
2021-09-01 21:08 ` dave.anglin at bell dot net
2021-09-01 21:15 ` deller at gmx dot de
2021-09-01 21:19 ` dave.anglin at bell dot net
2021-09-01 21:25 ` deller at gmx dot de
2021-09-01 21:29 ` deller at gmx dot de
2021-09-01 21:48 ` pinskia at gcc dot gnu.org
2021-09-01 21:51 ` [Bug middle-end/102162] " pinskia at gcc dot gnu.org
2021-09-01 21:52 ` pinskia at gcc dot gnu.org
2021-09-01 22:35 ` dave.anglin at bell dot net
2021-09-01 22:46 ` dave.anglin at bell dot net
2021-09-01 22:56 ` pinskia at gcc dot gnu.org
2021-09-01 23:19 ` pinskia at gcc dot gnu.org
2021-09-01 23:21 ` pinskia at gcc dot gnu.org
2021-09-01 23:29 ` pinskia at gcc dot gnu.org
2021-09-01 23:45 ` pinskia at gcc dot gnu.org [this message]
2021-09-01 23:55 ` pinskia at gcc dot gnu.org
2021-09-02 0:02 ` dave.anglin at bell dot net
2021-09-02 0:19 ` pinskia at gcc dot gnu.org
2021-09-02 0:23 ` pinskia at gcc dot gnu.org
2021-09-02 0:47 ` dave.anglin at bell dot net
2021-09-02 0:49 ` pinskia at gcc dot gnu.org
2021-09-02 3:33 ` pinskia at gcc dot gnu.org
2021-09-02 7:12 ` rguenth at gcc dot gnu.org
2021-09-02 9:01 ` arnd at linaro dot org
2021-09-02 9:41 ` deller at gmx dot de
2021-09-02 9:52 ` pinskia at gcc dot gnu.org
2021-09-02 13:59 ` deller at gmx dot de
2021-09-02 14:00 ` deller at gmx dot de
2021-09-03 23:25 ` deller at gmx dot de
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