United StatesChange Country, Oracle Worldwide Web Sites Communities I am a... I want to...
Bug ID: JDK-6812721 Block's frequency should not be NaN
JDK-6812721 : Block's frequency should not be NaN

Details
Type:
Bug
Submit Date:
2009-03-04
Status:
Resolved
Updated Date:
2010-04-03
Project Name:
JDK
Resolved Date:
2009-03-18
Component:
hotspot
OS:
solaris_10
Sub-Component:
compiler
CPU:
sparc
Priority:
P3
Resolution:
Fixed
Affected Versions:
hs15
Fixed Versions:
hs15 (b03)

Related Reports
Backport:
Backport:
Backport:
Backport:
Relates:

Sub Tasks

Description
Calculated block's frequency could be NaN which can cause all kind of problems in Register_Allocate and PhaseBlockLayout phases.
Specifically we hit  SEGV with HS14 VM on Solaris 8 in qsort() because edge_order() method returns incorrect value
for a block with NaN frequency.

                                    

Comments
EVALUATION

See description.
                                     
2009-03-04
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/19f25e603e7b
                                     
2009-03-04



Hardware and Software, Engineered to Work Together