Files
sdk/runtime/vm/compiler
Alexander Aprelev 13ea0b3e9f [vm/deterministic] When sorting CallTargets by frequency, sort by id in case of ties.
This addresses an issue that AOT snapshot, disassembly and flowgraph are different when generated on Windows vs Linux.
Difference is caused by different order of targets in CallTargets, caused by the fact that qsort doesn't have to preserve the order of equal elements in the original list.
While qsort on Linux preserves original (by id) order, on Windows it does not.

See https://github.com/flutter/flutter/issues/44425 for context.

Change-Id: I74c17fd83e5ae21f9733712a87de8f55a1ba94fd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149496
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
2020-06-01 23:55:08 +00:00
..
2020-05-04 21:15:27 +00:00

Dart VM Compilation Pipeline

This folder contains Dart VM compilation pipeline.

Compilation pipeline is mainly responsible for converting AST or Kernel AST into IL flow graphs and then generating native code from IL.

It has the following structure:

Directory What goes there
assembler/ Assemblers and disassemblers
backend/ IL based compilation backend: optimization passes and architecture specific code generation rules
frontend/ Frontends responsible for converting AST into IL
jit/ JIT specific passes and compilation pipeline entry points
aot/ AOT specific passes and compilation pipeline entry points
. Shared code or code without clear designation.

Currently there are no layering restrictions and components from different subfolders can reference each other.