hg: jdk/sandbox: 8230162: ScopeImpl.remove() has O(N) performance

[chris.hegarty at oracle.com]

Changeset: 03165abce4cc
Author:    jlahoda
Date:      2019-10-08 15:43 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/03165abce4cc

8230162: ScopeImpl.remove() has O(N) performance
Reviewed-by: jlahoda
Contributed-by: bcorso at google.com

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Scope.java
! test/langtools/tools/javac/lib/DPrinter.java
! test/langtools/tools/javac/scope/RemoveSymbolUnitTest.java