This way we can greatly simplify the different variants of ToObject in
our codebase and make them more uniform and robust. Adding a new
primitive doesn't require finding and changing all those places again,
but it is sufficient to setup the constructor function index when
allocating the map.
We use the inobject properties field of Map, which is invalid primitive
maps anyway.
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/1276533003
Cr-Commit-Position: refs/heads/master@{#30119}
There's no need to have one InstanceType per SIMD primitive type (this
will not scale long-term). Also reduce the amount of code duplication
and make it more robust wrt adding new SIMD types.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1273353003
Cr-Commit-Position: refs/heads/master@{#30107}
The following errors come up when compiling v8
with clang 3.7 on FreeBSD/amd64:
src/runtime/runtime-i18n.cc:629:37: error: reinterpret_cast from
'nullptr_t' to 'v8::internal::Smi *' is not allowed
local_object->SetInternalField(1, reinterpret_cast<Smi*>(NULL));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
test/cctest/test-heap.cc:131:20: error: reinterpret_cast from
'nullptr_t' to 'v8::internal::Object *' is not allowed
Handle<Object> n(reinterpret_cast<Object*>(NULL), isolate);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test/cctest/test-heap.cc:1989:18: error: reinterpret_cast from
'nullptr_t' to 'Address' (aka 'unsigned char *') is not
allowed
Address base = reinterpret_cast<Address>(NULL);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+add myself to the AUTHORS file.
BUG=
Review URL: https://codereview.chromium.org/1277353002
Cr-Commit-Position: refs/heads/master@{#30103}
When a (prototype) map registers as a user of its own prototype, it now remembers the index in that prototype's registry where it is listed.
This remembered index is used on un-registration to find the right slot to clear without walking the entire registry.
Compaction of the registry must update all entries' remembered indices.
BUG=chromium:517778,chromium:517406
LOG=n
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/1276353004
Cr-Commit-Position: refs/heads/master@{#30079}
This fixes a corner-case where extending an optimized code map left
stale entries in the abandoned copy. This can cause havoc not only in
the heap verifier but also in the GC, because stale entries have not
been recorded when being trated weakly.
Note that this also pre-tenures all optimized code maps into old-space
because their lifetime is coupled to the SharedFunctionInfo anyways.
R=hpayer@chromium.org
TEST=cctest/test-heap/Regress514122
BUG=chromium:514122
LOG=N
Review URL: https://codereview.chromium.org/1277873002
Cr-Commit-Position: refs/heads/master@{#30047}
This is only an estimate since it counts objects that could be shared,
for example strings, cow arrays, heap numbers, etc.
It however ignores objects that could be shared, but may only be used
by the context to be measured, for example shared function infos,
script objects, scope infos, etc.
R=jochen@chromium.org
Review URL: https://codereview.chromium.org/1268333004
Cr-Commit-Position: refs/heads/master@{#30029}
This introduces a CopyFixedArrayAndGrow method on Factory that takes
the "grow amount" instead of the "new size" as an argument. The new
interface is safer because it allows for mutations by the GC that
potentially trim the source array.
This also fixes a bug in SharedFunctionInfo::AddToOptimizedCodeMap
where the aformentioned scenario led to unused entries within the
optimized code map.
Note that FixedArray::CopySize is hereby deprecated because it is
considered unsafe and should no longer be used.
R=hpayer@chromium.org
TEST=mjsunit/regress/regress-crbug-513507
BUG=chromium:513507
LOG=n
Review URL: https://codereview.chromium.org/1255173006
Cr-Commit-Position: refs/heads/master@{#30012}
- Ensure frame_size is always set during allocation.
- Add DCHECKs that frame_size is a valid value
- Remove locals_count, which we don't need yet (possibly every)
- Add a newline at the end of BytecodeArray::Dissassemble
for each bytecode.
BUG=v8:4280
LOG=N
Review URL: https://codereview.chromium.org/1254873002
Cr-Commit-Position: refs/heads/master@{#29852}
This reverts commit 80b3f16951.
Revert "Record code slots that may point to evacuation candidate objects after deoptimizing them."
This reverts commit 4621210cfe.
BUG=chromium:507840
LOG=n
Review URL: https://codereview.chromium.org/1239383004
Cr-Commit-Position: refs/heads/master@{#29778}
This CL exposes the constructor function, defines type related
information, and implements value type semantics.
It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.
TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc
LOG=Y
BUG=v8:4124
Committed: https://crrev.com/e5ed3bee99807c502fa7d7a367ec401e16d3f773
Cr-Commit-Position: refs/heads/master@{#29689}
Review URL: https://codereview.chromium.org/1219943002
Cr-Commit-Position: refs/heads/master@{#29712}
This CL exposes the constructor function, defines type related
information, and implements value type semantics.
It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.
TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc
LOG=Y
BUG=v8:4124
Review URL: https://codereview.chromium.org/1219943002
Cr-Commit-Position: refs/heads/master@{#29689}
Until now, TF-generated code stubs piggy-backed off of the builtin
context. Since generation of code stubs is lazy, stubs generated at
different times in different native contexts would contain embedded
pointers different builtin contexts, leading to cross-context references
and memory leaks.
After this CL, all TF-generated code stubs are generated inside a
internal thinned-out, native context that lives solely for the
purpose of hosting generated code stubs.
Review URL: https://codereview.chromium.org/1213203007
Cr-Commit-Position: refs/heads/master@{#29593}
Note that there are currently no objects that require a pre-allocated
properties backing store, all such slots are in-object properties from
the begining. Hence {unused + pre_allocated - inobject == 0} holds.
R=verwaest@chromium.org
Review URL: https://codereview.chromium.org/1226203011
Cr-Commit-Position: refs/heads/master@{#29590}
For now it uses a pretty slow path for accessing strings by wrapping it into a new temporary wrapper.
BUG=v8:4042, v8:3088
LOG=y
Review URL: https://codereview.chromium.org/1221303019
Cr-Commit-Position: refs/heads/master@{#29576}
Speculative revert in the hopes of fixing serializer crashes seen in canary.
This reverts commit c166945083, as well as
followup change "Do not look for existing shared function info when compiling a new script."
(commit 7c43967bb7).
BUG=chromium:503552,v8:4132
TBR=yangguo@chromium.org
LOG=n
Review URL: https://codereview.chromium.org/1207583002
Cr-Commit-Position: refs/heads/master@{#29241}
Each Script object now keeps a WeakFixedArray of SharedFunctionInfo
objects created from this script.
This way, when compiling a function, we do not create duplicate shared
function info objects when recompiling with either compiler.
This fixes a class of issues in the debugger, where we set break points
on one shared function info, but functions from duplicate shared function
infos are not affected.
LOG=N
BUG=v8:4132
Review URL: https://codereview.chromium.org/1183733006
Cr-Commit-Position: refs/heads/master@{#29151}
This invariant will save us some head ache.
The changes to test-debug/DebugStub is due to the fact that it abuses
the ability to set break points in code that has no debug break slots.
This is now no longer possible.
R=ulan@chromium.org
BUG=v8:4132
LOG=N
Review URL: https://codereview.chromium.org/1181013007
Cr-Commit-Position: refs/heads/master@{#29038}
Reasons:
- It is not used.
- It complicates code in GC.
BUG=chromium:499713
LOG=NO
Review URL: https://codereview.chromium.org/1184723002
Cr-Commit-Position: refs/heads/master@{#29027}
This change rewrites regexps like (ab|ac|z|ad|ae|af) into (a[b-f]|z). We can only reorder disjunctions like this for case-dependent regexps. For case-independent regexps, the disjunctions should be pre-sorted for best results.
R=yangguo@chromium.org
BUG=chromium:482998
LOG=n
Review URL: https://codereview.chromium.org/1180433003
Cr-Commit-Position: refs/heads/master@{#28902}
This allows try-catch and try-finally constructs to be separately
enabled and disabled. We plan to stage try-catch support soon.
R=titzer@chromium.org
Review URL: https://codereview.chromium.org/1157863015
Cr-Commit-Position: refs/heads/master@{#28848}
Boolean "is_strong" parameters have begun to proliferate across areas where
strong mode semantics are different. This CL repurposes the existing
ObjectStrength enum as a replacement for them.
BUG=v8:3956
LOG=N
Review URL: https://codereview.chromium.org/1144183004
Cr-Commit-Position: refs/heads/master@{#28839}
Before this we had 3 super related lexical bindings that got injected
into method bodies: .home_object, .this_function, and new.target.
With this change we get rid of the .home_object one in favor of using
.this_function[home_object_symbol] which allows some simplifications
throughout the code base.
BUG=v8:3768
LOG=N
R=adamk@chromium.org, wingo@igalia.com
Review URL: https://codereview.chromium.org/1154103005
Cr-Commit-Position: refs/heads/master@{#28802}
