Hello,
Please review this patch. It solves a performance regression in javac
for 7u-dev repo.
The regression has been detected for a class that declares methods with
a lot of parameters (1..254).
The proposed solution modifies a data structure used to store wrong
method candidates for a given argument / type list. The mentioned data
structure was a com.sun.tools.javac.util.List and now is a java.util.Set.
Also a new field has been added to MethodType in
com.sun.tools.javac.code.Type this field stores the number of arguments
so equal comparison between methods can now be done faster for evident
cases.
The webrev is here:
http://cr.openjdk.java.net/~vromero/8015668_JDK7/webrev.00/
The bug report is here:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8015668
Thanks,
Vicente
