hg: jdk9/sandbox/jdk: 8148787: StringConcatFactory exactness check produces bad bytecode when a non-arg concat is requested

[chris.hegarty at oracle.com]

Changeset: b6c60ffba251
Author:    shade
Date:      2016-02-02 18:15 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/b6c60ffba251

8148787: StringConcatFactory exactness check produces bad bytecode when a non-arg concat is requested
Reviewed-by: vlivanov, psandoz

! src/java.base/share/classes/java/lang/invoke/StringConcatFactory.java
! test/java/lang/String/concat/ImplicitStringConcat.java
! test/java/lang/String/concat/ImplicitStringConcatArgCount.java
! test/java/lang/String/concat/ImplicitStringConcatBoundaries.java
! test/java/lang/String/concat/ImplicitStringConcatMany.java
! test/java/lang/String/concat/ImplicitStringConcatManyLongs.java
! test/java/lang/String/concat/ImplicitStringConcatShapes-head.template
! test/java/lang/String/concat/ImplicitStringConcatShapes.java
+ test/java/lang/String/concat/StringConcatFactoryEmptyMethods.java
! test/java/lang/String/concat/StringConcatFactoryInvariants.java