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JDK-6750588 : assert(lrg._area >= 0,"negative spill area") running NSK stmp0101 test

Details
Type:
Bug
Submit Date:
2008-09-19
Status:
Closed
Updated Date:
2011-03-08
Project Name:
JDK
Resolved Date:
2011-03-08
Component:
hotspot
OS:
generic
Sub-Component:
compiler
CPU:
generic
Priority:
P3
Resolution:
Fixed
Affected Versions:
hs14
Fixed Versions:
hs14 (b06)

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Description
NSK test fails with assert on all platforms running -Xcomp.

                                    

Comments
EVALUATION

Test case has loop nest 128 levels deep.  With new RPO parsing, the internal representation accurately represents the loop nest.  Block frequency calculations go to infinity for some of the inner loops because of the limitations of the float representation.

Calculations in ifg_physical go to NaN and INF because of the high frequencies, which aren't accounted for in the asserts.
                                     
2008-09-22
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/5f85534046c2
                                     
2008-09-25



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