The idea is to extract all the CodeEvent loggers into separate classes
make an interface for code events and put them into a listeners array.
I extracted code that works with name_buffer into a separate base class CodeEventLogger.
And made JitLogger, LowLevelLogger and new CodeMap its descendants.
As a side effect I converted NameBuffer into nested class of CodeEventLogger
and converted NameMap into nested class of CodeMap.
BUG=260203
R=yangguo@chromium.org, yurys@chromium.org
Review URL: https://codereview.chromium.org/19795002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15784 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Port r15773 (60aa9f0)
Original commit message:
With >= 64 non-string instance types, I removed an optimization that allowed us to detect internalized strings with a single bit test. (https://code.google.com/p/v8/source/detail?r=15358) But that change caused a regression, so here is an improvement:
Put the internalized string types in the lower 64 entries of
INSTANCE_TYPE, and non-internalized string types in the next 64 entries.
This way we can restore the single bit check.
BUG=
Review URL: https://codereview.chromium.org/19723008
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15783 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This patch fixes the step size of masm->pc_ in back_edge tables to words (4 bytes) to ensure 4 bytes alignment for read/write operations. Read and write of words (4 bytes) data from aligned space (address % 4 == 0) is more efficient on all platforms and especially on MIPS where without this alignment fix a kernel exception handler is used for every unaligned access.
This patch increases the size of back_edge tables by 3 bytes in every row. By the test it seem the back_edge table quite small in every/most cases (maximal length is 18 so in that case there are only 54 additional bytes with this patch).
BUG=
Patch from Douglas Leung <Douglas.Leung@imgtec.com>
Review URL: https://codereview.chromium.org/19248002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15782 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This is just a rename change with the exception of a bug found along the way in
CodeStubGraphBuilder<FastCloneShallowArrayStub>::BuildCodeStub(). There, the
intent is to get the boilerplate object from an AllocationSite. But the wrong
HObjectAccess was used. It only succeeds because it happened to be the same
offset :).
BUG=
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/19595004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15778 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
For that, we maintain an abstract store typing of all variables with LOCAL location (i.e., those that do not escape the function's own scope). We treat assignments as sequential effects that modify this store.
When control flow branches, we have to compute the disjunction of possible effects. To that end, we represent the store as a stack of effect sets, such that we can cheaply push and pop "local" effects when control flow has to branch.
In cases of non-local control transfer from an unknown source, we currently erase all knowledge about the store.
The 'switch' statement is still to come.
For a formulation of the typing rules, see:
https://docs.google.com/a/google.com/file/d/0B3wuXSv9YKuKeUNkVXZDemZ0Z1E
;)
R=jkummerow@chromium.org
BUG=
Review URL: https://codereview.chromium.org/19054006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15776 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Previously there were two ways to actually use the StringAddStub
from Hydrogen:
- Either using HStringAdd (which implied NO_STRING_CHECK_IN_STUB
and and does the argument handling internally),
- or using HCallStub with CodeStub::StringAdd (which implied
NO_STRING_ADD_FLAGS and expected the arguments to be on the
stack already).
R=mvstanton@chromium.org
Review URL: https://codereview.chromium.org/19541003
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15771 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This removes the isolate=>heap=>isolate nonsense and has the additional bonus
that it re-enables printing of code objects in GDB. NOT: To make the latter
work, one has to adapt GDB any macros using FindCodeObject! Keeping things as it
is and outlining Isolate::heap() was not really an option...
Side note: Currently we are lucky that we still have Isolate::Current()
available in GDB, although it is marked as INLINE. :-}
R=verwaest@chromium.org
Review URL: https://codereview.chromium.org/19785004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15770 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
These methods have been superceeded by equivalents accepting object arguments exposing more details.
This is exactly the same change as r15708 which was reverted in r15710 due to pending Blink changes. Now that Blink is rolled to 154493 it should be safe to land this (required Blink change is 154386).
BUG=None
TBR=yangguo@chromium.org
Review URL: https://codereview.chromium.org/19541005
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
The current usage of this runtime function is broken as it does not
prevent inlining of the affected function but rather bails out from the
whole unit of compilation after trying to inline affected functions.
This simplifies said runtime function to avoid accidental misuse.
R=titzer@chromium.org
TEST=mjsunit/never-optimize
Review URL: https://codereview.chromium.org/19776006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15762 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This change fixes data race described in the bug by adding Acquire_Load to SamplingCircularQueue::StartDequeue and Acquire_Store to SamplingCircularQueue::Enqueue.
Also the queue implementation imposed a constraint on the records it stored: the first AtomicWord in each record was a marker. For that purpose TickSampleEventRecord had filter field of type int. This approach is error prone, e.g. on x64 sizeof(AtomicWord) is 8 while sizeof(int) is 4. Moreover the queue needs such marker only at the beginning of chunk. I changed the queue so that it stores the marker explicitly as the first Cell in chunk and removed the filter field.
BUG=251218
R=loislo@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/19642002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15750 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
To fix the issue at hand regarding constant function calls and perhaps
other hidden issues regarding negative lookups, we basically add a
"marker instruction", just for harvesting purposes. Our type feedback
oracle is really, really fragile, we should better switch to some more
explicit and robust scheme soon.
BUG=chromium:252797
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/19588002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15741 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Port r15715 (2e830d4)
Original commit message:
The gc should be able to traverse all AllocationSites for decision making. The sites are threaded into a weak list. Special problems include:
* Allocations of AllocationSites occur in generated code, so generated code needs to be able to add to the list. For now I have a special hydrogen instruction, though it would be nice to use general purpose instructions.
* The snapshot contains AllocationSites, and these need to be re-threaded into the list on deserialization.
Something nice is that the AllocationSites are only created in old space, so a special new space visitor isn't required.
BUG=
Review URL: https://codereview.chromium.org/19635002
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15732 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
