Add function_type_arguments field in closure instances.
Lots of other smaller changes, also related to generic function semantics.
This is still work in progress, with a change of direction in the design:
The type argument vector of a generic function will be prepended with the type
arguments of enclosing generic functions. The re-allocation and concatenation
will be done in nested generic function's prolog. This will greatly simplify
instantiation of types at run time without having to search the context for
parent function's type arguments. However, a closure instance now requires an
additional field. On the other hand, type parameters do not require a
parent_level field anymore.
R=rmacnak@google.com
Review-Url: https://codereview.chromium.org/2818273002 .
parameters, whereas the class finalizer resolves all other type names and
performs finalization and canonicalization. This allows to remove a lot of
duplicated code between parser and class finalizer.
R=hausner@google.com
Review-Url: https://codereview.chromium.org/2673093003 .
In some cases when loading a deferred library twice, the VM would crash/throw.
Make sure we generate the correct static NoSuchMethod error when referring to
a deferred library that is not loaded yet.
Fixes#28278.
R=rmacnak@google.com
Review-Url: https://codereview.chromium.org/2618823002 .
i.e. #ifndef VM_WHATEVER -> #ifndef RUNTIME_VM_WHATEVER
This lets us remove a hack from the PRESUBMIT.py script that existed
for reasons that are no longer valid, and sets us up to add some
presubmit checks for the GN build.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/2450713004 .
- [x] Add three public fields to the "BoundVariable" service type: declarationTokenPos, visibleStartTokenPos, and visibleEndTokenPos. (naming suggestions welcome!)
- [x] Extend LocalVarDescriptors to hold the declaration token position (it already had the scope visibility boundaries).
- [x] Extend ContextScope to hold the declaration token position.
- [x] Add a unit test which verifies this works for local variables, function parameters, and closure captured variables.
Fixes https://github.com/dart-lang/sdk/issues/25569
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2419013004 .
Take two. (This version adds status file entries for checked
tests.)
Type parameters and arguments are parsed but ignored. Proper
handling of the parameters will be added subsequently.
The feature must be enabled with --generic-method-syntax.
Compiling all of dart2js consumes about 2.2% more tokens with
this change, due to the necessary lookahead to distinguish
generic functions from generic types.
===== with this change =========
Number of tokens: 1056691
Source length: 5850143 characters
Number of source tokens: 936226
Total tokens consumed: 3628934 <<<<<
Classes parsed: 2457
Tokens consumed: 977999
Functions parsed: 49607
Tokens consumed: 2430638
===== without this change ======
Number of tokens: 1056691
Source length: 5850143 characters
Number of source tokens: 936226
Total tokens consumed: 3547765 <<<<<
Classes parsed: 2457
Tokens consumed: 942536
Functions parsed: 49607
Tokens consumed: 2371357
(This reverts commit a1edb1766fd16b1268f3506feb7c9856b32bedfc.)
BUG= 25869
Review URL: https://codereview.chromium.org/2269693002 .
Type parameters and arguments are parsed but ignored. Proper
handling of the parameters will be added subsequently.
The feature must be enabled with --generic-method-syntax.
Compiling all of dart2js consumes about 2.2% more tokens with
this change, due to the necessary lookahead to distinguish
generic functions from generic types.
===== with this change =========
Number of tokens: 1056691
Source length: 5850143 characters
Number of source tokens: 936226
Total tokens consumed: 3628934 <<<<<
Classes parsed: 2457
Tokens consumed: 977999
Functions parsed: 49607
Tokens consumed: 2430638
===== without this change ======
Number of tokens: 1056691
Source length: 5850143 characters
Number of source tokens: 936226
Total tokens consumed: 3547765 <<<<<
Classes parsed: 2457
Tokens consumed: 942536
Functions parsed: 49607
Tokens consumed: 2371357
BUG=25869
R=asiva@google.com
Review URL: https://codereview.chromium.org/2260693002 .
Annotate patch classes and top-level patch functions with @patch
instead of the pseudo-keyword patch. This allows the analyzer
to read patch files, and matches the syntax that dart2js uses.
The deprecated syntax is still supported, but a warning is printed when detected.
BUG=
Review URL: https://codereview.chromium.org/2220883004 .
When a script is not in the vm heap, we now cache compile time
constants on the script object itself. During isolate reload we may
have both an old and a new version of a script being compiled at the
same time and they need to cache their constants separately. This
also means that compile time constants from old scripts can be
collected when the script is collected, which is good.
When a script is in the vm heap, we continue to use the old system of
employing a shared per-isolate cache stored in the object store.
Closes#26833
BUG=
R=fschneider@google.com, johnmccutchan@google.com
Review URL: https://codereview.chromium.org/2126393003 .
In switch statements, ‘continue L’ jumps can refer to a label
that the compiler hasn’t seen yet. The label is tentatively
to be in the innermost switch statement, but may later
be moved to an outer switch statement. The compiler must
make sure that the correct finally blocks are inlined in front
of these jumps.
BUG=26577, 25310
R=regis@google.com
Review URL: https://codereview.chromium.org/2030763002 .
Fourth(!) attempt. This CL fixes another instance where parsing a nested function modifies the parser state of the function that is being compiled.
When a local function gets compiled the second time, constant
expressions may not be parsed again, since the constant value
is found in the cache. If the expression refers to an outer
variable, it does not get captured correctly.
Fix: instead of parsing a local function repeatedly to capture
outer variables, use the local function’s context scope to mark
outer variables as captured. This fixes the bug, and makes the
compiler more efficient as well.
BUG= 26453
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/2010283004 .
Most of the infrastructure is fixed to work with DBC stack layout:
- register allocator allocates DBC registers with the limitation that we allocate only 20 registers and bail out if anything needs spilling (there is no use implementing spilling on DBC because registers are memory locations themselves). We should be able to bump number of CPU registers on DBC up to 256 but this requires major surgery in some parts - so I postponed this;
- lazy deoptimization is implemented, eager deoptimization is not - because we don't emit any code that actually requires it. it's a minor change to support it once we have a target;
- stack scanning respects stack maps built by registers allocator;
We bailout from all unsupported instructions.
R=zra@google.com
Review URL: https://codereview.chromium.org/1992963002 .
This is a cut of the work that Todd and I collaborated on in the reload branch.
In this CL, we've dropped the loader port hacks, in other words, on stack reloading in the standalone embedder does not work yet.
- [x] Support for hot reloading of isolate source code
- [x] Unit test harness and many tests
- [x] Service protocol and Observatory support
- [x] Product build does not include support for hot reloading.
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/1965823002 .
- Add a zone parameter to TokenStream::Iterator
- Add IsXXXX() functions in raw_object.h using GetClassId()
- Modify
- Function::owner
- Function::origin
- Type::IsMalformed
- Type::IsMalbounded
- Type::error
to not create a Handle in the common path
R=regis@google.com
Review URL: https://codereview.chromium.org/1952023002 .
- Use TokenDescriptor instead of intptr_t for all token positions.
- Use TokenDescriptor in raw_object instead of int32_t.
- TokenDescriptor is a POD with an int32_t (this shrinks the size of AST and IR nodes by 32-bits on 64-bit architectures).
There are some cleanups I plan on doing as a follow up CL:
- Replace TokenDescriptor::value() with TokenDescriptor::TokenPos()
R=iposva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/1644793002 .
Also take the opportunity to add the ability to report an error after a given token position. This way, the missing semicolon gets reported where it should: at the end of the line rather than the first token on the following line, when the error is actually detected.
BUG= 23761
R=regis@google.com
Review URL: https://codereview.chromium.org/1574213005 .
Super initializer calls get implicitly moved to the end of the initializer list, so we don't need the two-phase constructor protocol anymore.
Ryan, can you please look at the mirror changes and check wether I've missed something?
BUG=
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/1569213003 .
Each script has an associated top-level class in which the top-level functions and fields are stored, and the reference to the script. All other fields in the TL class are unused. There are 380 TL classes in corelib alone; eliminating them saves space.
This CL eliminates all TL classes but one per library. All TL functions and fields in the library are stored in that TL class. Because scripts are not stored directly in functions and fields, but are accessible via their owner class, the owner of TL entities are now PatchClasses, rather than classes.
Before:
Size of vm isolate snapshot = 930813
New space (0k of 0k) Old space (1184k of 1624k)
VM Isolate: Number of symbols : 14909
Size of isolate snapshot = 261873
New space (0k of 2048k) Old space (987k of 1024k)
After:
Size of vm isolate snapshot = 931101
New space (0k of 0k) Old space (713k of 1156k)
VM Isolate: Number of symbols : 14907
Size of isolate snapshot = 256956
New space (0k of 1024k) Old space (514k of 768k)
R=iposva@google.com
Review URL: https://codereview.chromium.org/1410383020 .
--move_super directs the VM compiler to move the super initializer
of a constructor to the end of the initializer list. The default
value is false. If we opt to enable this functionality, the implicit
phase parameter of constructors can be eliminated, simplifying
constructors significantly.
BUG=
R=regis@google.com
Review URL: https://codereview.chromium.org/1382533003 .
Prints the stats into a zone-allocated string that can either be dumped to the console, or displayed as a whole in the observatory.
Distinguish token consumption between class parsing and function parsing when compiling.
Change stat counter macros use thread instead of isolate.
Review URL: https://codereview.chromium.org//1300033002 .
Compile-time constant values are maintained in a cache, keyed
by script and token position. When the same code is compiled
again later, e.g. by the optimizing compiler, the value is
found in the cache and does not need to be computed again.
In this version, the key is a string concatenated from the
script url and the token position. That’s probably more overhead
than we want.
Added two compiler stat counters for number of cached constants
and number of cache hits. Running dart2js to compile a hello world
program results in about 1400 cached values and 85 cache hits.
BUG=
R=srdjan@google.com
Review URL: https://codereview.chromium.org//1308073005 .
One detail that isn't implemented yet is canonicalization of constructor tear-offs. At the moment, two tear-offs of the same constructor result in closures that are not equal.
BUG=
R=regis@google.com
Review URL: https://codereview.chromium.org//1255063005 .
The most substantial change is in Parser and ParsedFunction, which now cache their calling thread. (A similar change was tried unsuccessfully in the past, but can now be safely implemented thanks to the ThreadRegistry state saving.)
Only remaining users are the Object::Handle(Isolate*, [...]) methods. Then, this deprecated interface will be removed.
BUG=
R=asiva@google.com
Review URL: https://codereview.chromium.org//1242343002 .
Régis Crelier