Alexander Markov
69b84908a5
On 32-bit arm, when generating subtype test cache stub, [delayed_type_args_reg] could be the same as [TypeTestABI::kInstanceReg] (due to lack of registers). As a result, when loading delayed type arguments from an instantiated generic closure, [TypeTestABI::kInstanceReg] is eagerly overwritten, which results in garbage delayed type arguments. With the linear probe cache this would cause repeated cache misses. With the hash-based cache this would cause a crash. Bug: b/507666702 Change-Id: I1093f9277d874154a121ef644ecd7aa76320f789 TEST=runtime/tests/vm/dart/regress_b_507666702_test.dart Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/500842 Reviewed-by: Tess Strickland <sstrickl@google.com> Reviewed-by: Slava Egorov <vegorov@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
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.