hg: jdk/jdk: 8224624: Inefficiencies in CodeStrings::add_comment cause timeouts

[tobias.hartmann at oracle.com]

Changeset: e686b661fa05
Author:    thartmann
Date:      2019-08-22 12:24 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/e686b661fa05

8224624: Inefficiencies in CodeStrings::add_comment cause timeouts
Summary: Changing CodeStrings to a doubly-linked-list and searching for the comment with the right offset in reverse.
Reviewed-by: kvn

! src/hotspot/share/asm/codeBuffer.cpp
! src/hotspot/share/asm/codeBuffer.hpp