RFR: 8268178: Extract sender frame parsing to CodeBlob::FrameParser [v4]

[Ludovic Henry]

> Whether and how a frame is setup is controlled by the code generator
> for the specific CodeBlock. The CodeBlock is then in the best place to know how
> to parse the sender's frame from the current frame in the given CodeBlock.
> 
> This refactoring proposes to extract this parsing out of `frame` and into a
> `CodeBlock::FrameParser`. This FrameParser is then specialized in the relevant
> inherited children of CodeBlock.
> 
> This change is to largely facilitate adding new supported cases for JDK-8252417 [1]
> like runtime stubs.
> 
> [1] https://bugs.openjdk.java.net/browse/JDK-8252417

Ludovic Henry has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:

  8268178: Extract sender frame parsing to CodeBlock::FrameParser
  
  Whether and how a frame is setup is controlled by the code generator
  for the specific CodeBlock. The CodeBlock is then in the best place to know how
  to parse the sender's frame from the current frame in the given CodeBlock.
  
  This refactoring proposes to extract this parsing out of `frame` and into a
  `CodeBlock::FrameParser`. This FrameParser is then specialized in the relevant
  inherited children of CodeBlock.
  
  This change is to largely facilitate adding new supported cases for JDK-8252417
  like runtime stubs.

-------------

Changes: https://git.openjdk.java.net/jdk/pull/4337/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4337&range=03
  Stats: 696 lines in 20 files changed: 511 ins; 117 del; 68 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4337.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4337/head:pull/4337

PR: https://git.openjdk.java.net/jdk/pull/4337