JDK-8240976 : [JVMCI] MethodProfileWidth flag is broken
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 11-pool,15
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- Submitted: 2020-03-13
- Updated: 2021-01-04
- Resolved: 2020-03-18
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Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
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Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 11 | JDK 15 |
|---|---|
| 11.0.8-oracleFixed | 15 b15Fixed  |
Description
VM crashes if not 0 value is used for MethodProfileWidth flag:
java -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:MethodProfileWidth=2 -version
FAILED verify : actual mdp 0x7f6b1c17dbe8 expected mdp 0x7f6b1c17dbc8 @ bci 11
actual di 120 expected di 88
actual bci is 15 expected bci 11
method data for {method} {0x000000080035bf68} 'equals' '(Ljava/lang/Object;)Z' in 'java/lang/String'
0 bci: 2 BranchData taken(1) displacement(32)
not taken(0)
32 bci: 8 ReceiverTypeData count(0) nonprofiled_count(0) entries(1)
'java/lang/String'(1 1.00)
88 bci: 11 BranchData taken(0) displacement(168)
not taken(0)
120 bci: 15 ReceiverTypeData count(0) nonprofiled_count(0) entries(0)
176 bci: 22 BranchData taken(0) displacement(64)
not taken(0)
208 bci: 33 BranchData taken(0) displacement(48)
not taken(0)
240 bci: 44 CounterData count(0)
--- Extra data:
304 bci: 0 ArgInfoData 0x0 0x0
0 nofast_aload_0
1 aload_1
2 if_acmpne 7
0 bci: 2 BranchData taken(1) displacement(32)
not taken(0)
5 iconst_1
6 ireturn
7 aload_1
8 instanceof 10 <java/lang/String>
32 bci: 8 ReceiverTypeData count(0) nonprofiled_count(0) entries(1)
'java/lang/String'(1 1.00)
11 ifeq 48
88 bci: 11 BranchData taken(0) displacement(168)
not taken(0)
14 aload_1
15 checkcast 10 <java/lang/String>
120 bci: 15 ReceiverTypeData count(0) nonprofiled_count(0) entries(0)
18 astore_2
19 getstatic 34 <java/lang/String.COMPACT_STRINGS/Z>
22 ifeq 36
176 bci: 22 BranchData taken(0) displacement(64)
not taken(0)
25 nofast_aload_0
26 nofast_getfield 15 <java/lang/String.coder/B>
29 aload_2
30 nofast_getfield 15 <java/lang/String.coder/B>
33 if_icmpne 48
208 bci: 33 BranchData taken(0) displacement(48)
not taken(0)
36 nofast_aload_0
37 nofast_getfield 9 <java/lang/String.value/[B>
40 aload_2
41 nofast_getfield 9 <java/lang/String.value/[B>
44 invokestatic 182 <java/lang/StringLatin1.equals([B[B)Z>
240 bci: 44 CounterData count(0)
47 ireturn
48 iconst_0
49 ireturn
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/interpreterRuntime.cpp:1164
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (open/src/hotspot/share/interpreter/interpreterRuntime.cpp:1164), pid=23889, tid=23890
# assert(mdp == mdp2) failed: wrong mdp
#
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