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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/103227] 58% exchange2 regression with -Ofast -march=native on zen3 between g:1ae8edf5f73ca5c3 and g:2af63f0f53a12a72
Date: Sat, 13 Nov 2021 22:11:16 +0000 [thread overview]
Message-ID: <bug-103227-4-dXZGkwgmen@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-103227-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103227
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
There is difference in inlier decision. Since all clones are of same size it
depends on the order inliner picks them and combines together before hitting
large-function-growth. It seems that with isra ordering inliner simply less
lucky.
Instead of inline stack:
IPA function summary for digits_2.constprop/143 inlinable
global time: 22960.500916
self size: 1277
global size: 2534
min size: 513
self stack: 261
global stack: 783
estimated growth:-488
size:513.000000, time:6690.410500
size:3.000000, time:2.000001, executed if:(not inlined)
size:0.500000, time:0.500000, executed if:(not inlined), nonconst
if:(op0[ref offset: 0] changed) && (not inlined)
size:138.500000, time:217.532556, nonconst if:(op0[ref offset: 0] changed)
size:36.000000, time:34.793911, executed if:(op0[ref offset: 0],(# % 3) ==
2), nonconst if:(op0[ref offset: 0] changed) && (op0[ref offset: 0],(# % 3) ==
2)
size:198.000000, time:574.099545, executed if:(op0[ref offset: 0],(# % 3)
== 2)
size:36.000000, time:34.793911, executed if:(op0[ref offset: 0],(# % 3) ==
1), nonconst if:(op0[ref offset: 0] changed) && (op0[ref offset: 0],(# % 3) ==
1)
size:270.000000, time:1357.103458, executed if:(op0[ref offset: 0],(# % 3)
== 1)
size:21.000000, time:375.971570, executed if:(op0[ref offset: 0] == 5)
size:1263.000000, time:12359.502960, executed if:(op0[ref offset: 0] != 8)
size:1.000000, time:0.900000, executed if:(op0[ref offset: 0] != 8),
nonconst if:(op0[ref offset: 0] changed) && (op0[ref offset: 0] != 8)
size:48.000000, time:1300.920311, executed if:(op0[ref offset: 0] == 8)
loop iterations: 0.68 for (op0[ref offset: 0] changed)
0.76 for (op0[ref offset: 0] changed)
0.88 for (op0[ref offset: 0] changed)
1.08 for (op0[ref offset: 0] changed)
1.40 for (op0[ref offset: 0] changed)
1.93 for (op0[ref offset: 0] changed)
2.80 for (op0[ref offset: 0] changed)
4.23 for (op0[ref offset: 0] changed)
11.88 for (op0[ref offset: 0] changed)
4.59 for (op0[ref offset: 0] changed)
3.16 for (op0[ref offset: 0] changed)
2.29 for (op0[ref offset: 0] changed)
1.76 for (op0[ref offset: 0] changed)
1.44 for (op0[ref offset: 0] changed)
1.24 for (op0[ref offset: 0] changed)
1.12 for (op0[ref offset: 0] changed)
calls:
covered.constprop/148 --param max-inline-insns-auto limit reached
freq:0.30 loop depth: 9 size: 4 time: 13 callee size:262 stack:1472
predicate: (op0[ref offset: 0] == 8)
op0 is compile time invariant
op0 points to local or readonly memory
op1 is compile time invariant
op1 points to local or readonly memory
digits_2.constprop/144 inlined
freq:0.90
Stack frame offset 261, callee self size 261
__builtin_unreachable/156 unreachable
freq:0.00 cross module loop depth:18 size: 0 time: 0 predicate:
(false)
op0 is compile time invariant
op0 points to local or readonly memory
op1 is compile time invariant
op1 points to local or readonly memory
digits_2.constprop/145 inlined
freq:0.81
Stack frame offset 522, callee self size 261
__builtin_unreachable/156 unreachable
freq:0.00 cross module loop depth:27 size: 0 time: 0 predicate:
(false)
op0 points to local or readonly memory
op1 is compile time invariant
op1 points to local or readonly memory
digits_2.constprop/146 --param large-function-growth limit reached
freq:0.73 loop depth:27 size: 2 time: 11 callee size:1019 stack:522
predicate: (op0[ref offset: 0] != 8)
op0 is compile time invariant
op0 points to local or readonly memory
where inlining fails only at recursion depth 4 we get:
IPA function summary for digits_2.constprop.isra/163 inlinable
global time: 17184.704285
self size: 1277
global size: 1994
min size: 513
self stack: 261
global stack: 522
estimated growth:301
size:513.000000, time:6690.410500
size:3.000000, time:2.000001, executed if:(not inlined)
size:0.500000, time:0.500000, executed if:(not inlined), nonconst
if:(op0[ref offset: 0] changed) && (not inlined)
size:138.500000, time:217.532556, nonconst if:(op0[ref offset: 0] changed)
size:36.000000, time:34.793911, executed if:(op0[ref offset: 0],(# % 3) ==
2), nonconst if:(op0[ref offset: 0] changed) && (op0[ref offset: 0],(# % 3) ==
2)
size:198.000000, time:574.099545, executed if:(op0[ref offset: 0],(# % 3)
== 2)
size:36.000000, time:34.793911, executed if:(op0[ref offset: 0],(# % 3) ==
1), nonconst if:(op0[ref offset: 0] changed) && (op0[ref offset: 0],(# % 3) ==
1)
size:270.000000, time:1357.103458, executed if:(op0[ref offset: 0],(# % 3)
== 1)
size:21.000000, time:375.971570, executed if:(op0[ref offset: 0] == 5)
size:723.000000, time:6582.815331, executed if:(op0[ref offset: 0] != 8)
size:1.000000, time:0.900000, executed if:(op0[ref offset: 0] != 8),
nonconst if:(op0[ref offset: 0] changed) && (op0[ref offset: 0] != 8)
size:48.000000, time:1300.920311, executed if:(op0[ref offset: 0] == 8)
loop iterations: 0.68 for (op0[ref offset: 0] changed)
0.76 for (op0[ref offset: 0] changed)
0.88 for (op0[ref offset: 0] changed)
1.08 for (op0[ref offset: 0] changed)
1.40 for (op0[ref offset: 0] changed)
1.93 for (op0[ref offset: 0] changed)
2.80 for (op0[ref offset: 0] changed)
4.23 for (op0[ref offset: 0] changed)
11.88 for (op0[ref offset: 0] changed)
4.59 for (op0[ref offset: 0] changed)
3.16 for (op0[ref offset: 0] changed)
2.29 for (op0[ref offset: 0] changed)
1.76 for (op0[ref offset: 0] changed)
1.44 for (op0[ref offset: 0] changed)
1.24 for (op0[ref offset: 0] changed)
1.12 for (op0[ref offset: 0] changed)
calls:
digits_2.constprop.isra/162 inlined
freq:0.90
Stack frame offset 261, callee self size 261
digits_2.constprop.isra/161 --param large-function-growth limit reached
freq:0.81 loop depth:18 size: 2 time: 11 callee size:1033 stack:522
predicate: (op0[ref offset: 0] != 8)
op0 is compile time invariant
op0 points to local or readonly memory
__builtin_unreachable/168 unreachable
freq:0.00 cross module loop depth:18 size: 0 time: 0 predicate:
(false)
op0 is compile time invariant
op0 points to local or readonly memory
op1 is compile time invariant
op1 points to local or readonly memory
covered.constprop/148 --param max-inline-insns-auto limit reached
freq:0.30 loop depth: 9 size: 4 time: 13 callee size:262 stack:1472
predicate: (op0[ref offset: 0] == 8)
op0 is compile time invariant
op0 points to local or readonly memory
op1 is compile time invariant
op1 points to local or readonly memory
where we fail at depth2
next prev parent reply other threads:[~2021-11-13 22:11 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-13 21:05 [Bug tree-optimization/103227] New: " hubicka at gcc dot gnu.org
2021-11-13 22:00 ` [Bug ipa/103227] " hubicka at gcc dot gnu.org
2021-11-13 22:11 ` hubicka at gcc dot gnu.org [this message]
2021-11-13 22:15 ` hubicka at gcc dot gnu.org
2021-11-15 9:04 ` [Bug ipa/103227] [12 Regression] 58% exchange2 regression with -Ofast -march=native on zen3 since r12-5223-gecdf414bd89e6ba251f6b3f494407139b4dbae0e rguenth at gcc dot gnu.org
2021-11-19 18:18 ` jamborm at gcc dot gnu.org
2021-11-19 21:12 ` hubicka at kam dot mff.cuni.cz
2021-11-19 21:22 ` hubicka at gcc dot gnu.org
2021-11-19 23:21 ` jamborm at gcc dot gnu.org
2021-11-20 12:32 ` hubicka at kam dot mff.cuni.cz
2021-11-20 12:39 ` hubicka at kam dot mff.cuni.cz
2021-11-21 15:16 ` cvs-commit at gcc dot gnu.org
2021-11-23 17:02 ` jamborm at gcc dot gnu.org
2021-11-24 12:52 ` jamborm at gcc dot gnu.org
2021-11-25 17:17 ` cvs-commit at gcc dot gnu.org
2021-11-26 9:19 ` hubicka at gcc dot gnu.org
2021-11-28 18:56 ` hubicka at gcc dot gnu.org
2022-12-14 0:04 ` cvs-commit at gcc dot gnu.org
2023-08-15 15:45 ` jamborm at gcc dot gnu.org
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