It is only used to test if the Code has been disabled, and we can instead test if the active entry point matches the Instruction's entry point. A Code's entry point is either for its own Instructions or Instructions of stub code in the VM isolate, so we don't need this field to keep the Instructions alive.
precompiled dart2js x64 22254552 -> 22165795 (-0.39%)
BUG=http://dartbug.com/25992R=fschneider@google.com
Review URL: https://codereview.chromium.org/1814623003 .
Load the Code from the ic data array instead of the ObjectPool because we still need the Code object in the frame to find stackmaps / build stacktraces / build profile results.
Keep doing things the old way until all compilation is finished because evaluation of constants still needs functional lazy compilation and the compiler works with ICData that may contain as-yet-uncompiled functions. After compilation is finished, transform all the ICData from (cid, target function, count) to (cid, target code, entry point) and switch to the ICLookup stub that works with this representation.
Golem average +3.133% on ARM, +3.544% on x64
R=srdjan@google.com
Review URL: https://codereview.chromium.org/1799793002 .
- Fix bug in inlined call token positios.
- Add ProfileFunctionSourcePosition for tracking source positions within functions.
- Keep a list of ProfileFunctionSourcePosition in each function.
- Add unit test helper functions.
- Add unoptimized unit tests that verify source positions in function profiles.
- Add optimized/inlined unit tests that verify source positions in function profiles.
R=srdjan@google.com
Review URL: https://codereview.chromium.org/1758653003 .
identical names. The library name is not always helpful, and the prefix confuses
users when the types are function types.
Instead, enumerate all appearing types with their URIs.
This should help debug issue #27229258.
R=srdjan@google.com
Review URL: https://codereview.chromium.org/1743653002 .
- Add helpers for building CodeSourceMap to FlowGraphCompiler. Ensure that no duplicate pc offsets are added to a CodeSourceMap.
- Add a CodeSourceMap debug printer which incorporates inlining information.
- Add some new classifying token positions.
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/1740503002 .
- Do not create/add function when looking them up in TryCreatICData
- Do not allow background compilation to add/remove functions
- Cache function hash array as it may change or be set to null.
Check VMObject only if FLAG_verify_handles is true.
BUG=
R=asiva@google.com
Review URL: https://codereview.chromium.org/1709273003 .
Make sure that String::Equals(const String&) checks the hash codes
on the strings if they are available. Before this change, only
String::Equals(const Instance&) would consult the hash codes.
R=iposva@google.com
BUG=
Review URL: https://codereview.chromium.org/1666113002 .
- 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 .
They were used as the class of closure instances and as the type class of
function types.
All closure instances now have class _Closure and function types are represented
by a new class FunctionType extending AbstractType.
Fix issue 24567 and add regression test.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/1584223006 .
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 .
superclass is generic, in which case the type argument vector is not
necessarily empty, but definitely constant.
Until now, the fast cache was only used for classes without type arguments along
the whole superclass chain.
R=srdjan@google.com
Review URL: https://codereview.chromium.org/1556113002 .
These reports provide information tied to token positions in the
Dart source program.
SourceReport can generate multiple kinds of reports. Right now it
implements code coverage and call site reports. In the future it
could provide, for example, valid breakpoint sites or source-level
profiles.
Scripts are refered to by index within the report and a script table
is tacked on the end. This avoids a bit of duplication.
In a future cl I will expose this reporting through the vm service.
After that, we can remove our older coverage/callsite code.
----------
Very simple, sample coverage report:
{
"type": "SourceReport",
"ranges": [
{
"scriptIndex": 0,
"startPos": 0,
"endPos": 4,
"compiled": true,
"coverage": {
"hits": [],
"misses": []
}
},
{
"scriptIndex": 0,
"startPos": 6,
"endPos": 10,
"compiled": false
},
{
"scriptIndex": 0,
"startPos": 12,
"endPos": 39,
"compiled": true,
"coverage": {
"hits": [ 23 ],
"misses": [ 32 ]
}
}
],
"scripts": [
{
"type": "@Script",
"fixedId": true,
"id": "libraries\/15\/scripts\/test-lib",
"uri": "test-lib",
"_kind": "script"
}
]
}
R=johnmccutchan@google.com
Review URL: https://codereview.chromium.org/1533653003 .
This ensures the implicit closure function is enumerated in later steps. Fixes crash in co19 test reducible as
import 'dart:math';
main() {
print(const [1, 2.0, "3"].fold(0, max));
}
Also enumerate invocation dispatchers to avoid a similar situation there, though I cannot find a crashing example involving them.
R=fschneider@google.com
Review URL: https://codereview.chromium.org/1489203004 .
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 .
Enable inlining of certain smi- and array-operations based on propagated
types and range analysis:
If bounds checks and class checks can not be eliminated, bail out of the
current optimization and retry without speculative inlining using the same
mechanism as we use for far jumps on MIPS.
Allow more speculative inlining attempts with up to n deopt ids black-listed.
For now set n=1 since precompilation time will be proportional to n.
BUG=
R=srdjan@google.com
Review URL: https://codereview.chromium.org/1423063005 .
Instead of collecting closures functions in each class object, maintain one list per isolate. This is a step towards getting rid of top-level classes.
I'd appreciate if John could take a look at the service isolate and coverage related change.
I'd appreciate if Ryan could take a look at the precompilation related change.
When compiling all of corelib, the list of closures in the isolate is about 600 entries long. If this linear list should become a bottleneck, I'll deal with it later. (Sadly, some code relies on the fact that a closure can be identified with a list index, so making it a hash table instead of an array does not work.)
BUG=
R=rmacnak@google.com
Review URL: https://codereview.chromium.org/1436243005 .
Ryan Macnak