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Type: Bug
Resolution: Fixed
Priority: P1
Fix Version/s: 9
Affects Version/s: 9
Component/s: hotspot
Labels:
- hs-nightly

Subcomponent:
compiler
Resolved In Build:
b137
Verification:
Verified

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8214626	8u211	David Buck	P1	Resolved	Fixed	b01
JDK-8181822	8u202	David Buck	P2	Closed	Fixed	b02
JDK-8220879	emb-8u211	David Buck	P1	Resolved	Fixed	master

Unsafe accesses can produce untyped pointers:

# Internal Error (/Users/vlivanov/ws/jdk/hs-comp9/hotspot/src/share/vm/opto/compile.cpp:1712), pid=61943, tid=22531
# assert(flat != TypePtr::BOTTOM) failed: cannot alias-analyze an untyped ptr

ILW = MLH = P4
I = M: assert
L = L: observed only with modified JVM
W = H: no workaround

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hs_err_pid61987.log
64 kB
2016-04-28 05:49
SplitIf.AddPNode.png
44 kB
2016-04-28 05:51

backported by

JDK-8214626 C2: Mixed unsafe oop accesses break alias analysis

Resolved

JDK-8220879 C2: Mixed unsafe oop accesses break alias analysis

Resolved

JDK-8181822 C2: Mixed unsafe oop accesses break alias analysis

Closed

duplicates

JDK-8164121 assert(flat != TypePtr::BOTTOM) failed: cannot alias-analyze an untyped ptr

Closed

JDK-8056058 C2 assert: assert(flat != TypePtr::BOTTOM) failed: cannot alias-analyze an untyped ptr when running SPECjbb2013

Closed

relates to

JDK-8221355 Performance regression after JDK-8155635 backport into 8u

Resolved

JDK-8056058 C2 assert: assert(flat != TypePtr::BOTTOM) failed: cannot alias-analyze an untyped ptr when running SPECjbb2013

Closed

(2 relates to)

Assignee:: Vladimir Ivanov

Reporter:: Vladimir Ivanov

Votes:: 0 Vote for this issue

Watchers:: 8 Start watching this issue

Created:: 2016-04-28 05:48

Updated:: 2019-04-24 08:38

Resolved:: 2016-08-25 05:19

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