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Samir Jindel c7d7552697 [vm] Re-land aggressive write-barrier elimination. 
It incorrectly assumed that all stores in Dart code write to Instances.
There is actually one exception, Contexts, which do not inherit from Instance.

I've added asserts to ensure this kind of bug cannot resurface.

The original change is in patchset 4.

Change-Id: Ic2d8d05e70a4de738eb9fb5980487b4f27111b8c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/136221
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
2020-02-24 18:26:46 +00:00
..
aot
[vm] Remove the "compilation allowed" bit.
2020-02-21 17:50:13 +00:00
assembler
[vm/aot] Use the NOTFP register for the global dispatch table on ARM.
2020-02-20 11:27:38 +00:00
backend
[vm] Re-land aggressive write-barrier elimination.
2020-02-24 18:26:46 +00:00
ffi
[vm/ffi] Fix sign extension for small int arguments on x64 Linux/MacOS
2020-02-10 17:05:14 +00:00
frontend
[SDK] Adds IndirectGoto implementation of sync-yield.
2020-02-18 13:24:09 +00:00
jit
[vm] Remove the "compilation allowed" bit.
2020-02-21 17:50:13 +00:00
asm_intrinsifier_arm64.cc
[vm] Implement nullability check in type equality intrinsic
2019-12-19 16:55:23 +00:00
asm_intrinsifier_arm.cc
[vm] Free up NOTFP register on ARM in precompiled mode.
2020-02-20 11:27:38 +00:00
asm_intrinsifier_ia32.cc
[vm] Implement nullability check in type equality intrinsic
2019-12-19 16:55:23 +00:00
asm_intrinsifier_x64.cc
[vm] Implement nullability check in type equality intrinsic
2019-12-19 16:55:23 +00:00
asm_intrinsifier.cc
[vm] DBC is obsolete. Remove dead code.
2019-10-27 18:18:29 +00:00
asm_intrinsifier.h
[vm] DBC is obsolete. Remove dead code.
2019-10-27 18:18:29 +00:00
call_specializer.cc
Reland "[VM/runtime] Fix type tests with LHS FutureOr (fixes #38906)."
2020-02-20 21:01:25 +00:00
call_specializer.h
[vm/aot] Use a global dispatch table for instance calls in AOT.
2020-02-03 11:04:15 +00:00
cha_test.cc
…
cha.cc
…
cha.h
[vm/aot] Inline == in AOT against nullable receiver.
2019-12-20 12:33:50 +00:00
compiler_pass.cc
[vm] Re-land aggressive write-barrier elimination.
2020-02-24 18:26:46 +00:00
compiler_pass.h
[vm] Re-land aggressive write-barrier elimination.
2020-02-24 18:26:46 +00:00
compiler_sources.gni
[vm] Re-land aggressive write-barrier elimination.
2020-02-24 18:26:46 +00:00
compiler_state.cc
…
compiler_state.h
[vm, bytecode] Saturate context ids instead of issuing a compile-time error.
2019-10-03 16:57:33 +00:00
graph_intrinsifier_arm64.cc
…
graph_intrinsifier_arm.cc
…
graph_intrinsifier_ia32.cc
…
graph_intrinsifier_x64.cc
…
graph_intrinsifier.cc
[vm/precomp] Inline SIMD operations
2019-12-19 15:09:32 +00:00
graph_intrinsifier.h
[vm] DBC is obsolete. Remove dead code.
2019-10-27 18:18:29 +00:00
intrinsifier.cc
[vm] DBC is obsolete. Remove dead code.
2019-10-27 18:18:29 +00:00
intrinsifier.h
…
method_recognizer.cc
[vm/tfa] Use pragma to pass type arguments to exact return types.
2020-01-03 14:08:19 +00:00
method_recognizer.h
[vm] Don't unroll initialization code based on macro lists.
2019-11-14 19:11:38 +00:00
offsets_extractor.cc
[vm] Update offsets
2020-01-27 15:59:56 +00:00
README.md
…
recognized_methods_list.h
[cfe] Add new flags to AsExpression and IsExpression
2020-01-31 19:55:22 +00:00
relocation.cc
Reland "[vm/aot] Remove object wrapping of bare instructions for AOT snapshots."
2020-02-10 15:08:04 +00:00
relocation.h
Reland "[vm/aot] Remove object wrapping of bare instructions for AOT snapshots."
2020-02-10 15:08:04 +00:00
runtime_api.cc
[vm] Introduce FutureOr class in the VM
2020-02-14 21:40:17 +00:00
runtime_api.h
[vm] Introduce FutureOr class in the VM
2020-02-14 21:40:17 +00:00
runtime_offsets_extracted.h
[vm/concurrency] Share [Heap] and [SharedClassTable] between all isolates within one isolate group
2020-02-20 21:08:35 +00:00
runtime_offsets_list.h
[vm] Introduce FutureOr class in the VM
2020-02-14 21:40:17 +00:00
stub_code_compiler_arm64.cc
[vm/nnbd] Preparation for type testing stubs in NNBD strong mode
2020-02-14 18:27:07 +00:00
stub_code_compiler_arm.cc
[vm/aot] Use the NOTFP register for the global dispatch table on ARM.
2020-02-20 11:27:38 +00:00
stub_code_compiler_ia32.cc
[vm/aot] Include entries for null in the dispatch table to avoid check.
2020-02-13 15:32:48 +00:00
stub_code_compiler_x64.cc
[vm/nnbd] Preparation for type testing stubs in NNBD strong mode
2020-02-14 18:27:07 +00:00
stub_code_compiler.h
[vm] Enable multiple entry-points on IA32.
2020-01-07 17:05:44 +00:00
write_barrier_elimination.cc
[vm] Re-land aggressive write-barrier elimination.
2020-02-24 18:26:46 +00:00
write_barrier_elimination.h
[vm] Re-land aggressive write-barrier elimination.
2020-02-24 18:26:46 +00:00

README.md

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.

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