Port r11282 (bd2ab07).
Patch by Daniel Kalmar.
Original commit message:
Some GWT compiled code results in array access that has a heap number (e.g. -0)
as an index. Until now this would result in a generic IC.
For example:
a[-0] === a[0] or
a[0.25 * 4] === a[1]
This change detects heap numbers that are representable as a smi
and converts them. As a result we can still use the fast keyed monomorphic
ICs. Optimized code already handles keyed access with a double-key efficiently.
As a result the frame rate on the reported benchmark improves by roughly 2x.
BUG=
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Review URL: https://chromiumcodereview.appspot.com/10068012
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11318 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
List of changes:
-added a minor optimization to the Simulator that quickly skips nops in the delay slot
-slightly re-worked CEntryStub to save a few instructions
CEntryStub now expects the following values:
-s0: number of arguments including receiver
-s1: size of arguments excluding receiver
-s2: pointer to builtin function
Two new MacroAssembler functions were added to make usage more convenient:
-PrepareCEntryArgs(int num_args) to set up s0 and s1
-PrepareCEntryFunction(const ExternalReference&) to set up s2
-removed branch delay slot nops from the most frequently used code areas
-reorganized some code to execute fewer instructions
-utilized the delay slot of most Ret instructions
This does not cover all Rets, only the most obvious cases.
Also added a special version of DropAndRet that utilizes the delay slot.
-added some comments to code areas where explanation of the register/delay slot usage may be needed
-added an optimization to Jump so it doesn't always pre-load the target register
BUG=
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Review URL: https://chromiumcodereview.appspot.com/9699071
Patch from Daniel Kalmar <kalmard@homejinni.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11099 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Port r10673 (18d3af5).
Original commit message:
Supports growing non-COW JSArray by a single element if the backing store has room, and initial allocation of a backing store for the store to index zero of an empty array to kPreallocatedArrayElements elements (e.g. the [] array literal).
BUG=
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Review URL: https://chromiumcodereview.appspot.com/9378005
Patch from Daniel Kalmar <kalmard@homejinni.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10707 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Yak shaving for map sharing with accessor properties contd.: When CALLBACKS can
have map transitions, simply looking at the property type is not sufficient
anymore to decide if a property is there or not. One has to look at the actual
contents of the descriptor entry then, but this breaks down sometimes when the
lookup is being done with a NULL holder. Luckily enough, we can oftren replace
IsProperty by the simpler IsFound, because we inspect the type immediately
afterwards, anyway.
Review URL: https://chromiumcodereview.appspot.com/9280007
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10474 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Port r10356 (69da81).
Original commit message:
Loosen the requirement for Map equivalency on several map checks, including checks up the prototype chain, that are not sensitive to ElementsKinds. These selected map checks should also match against FAST_DOUBLE_ELEMENT and FAST_ELEMENT transitions of the original map. This specifically helps all variants of transitioned JSArrays to still efficiently call builtins like push, pop and sort.
BUG=
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Review URL: https://chromiumcodereview.appspot.com/9265007
Patch from Daniel Kalmar <kalmard@homejinni.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10461 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
for call-sites with mismatched number of arguments.
Port r10424 (92a05c9c).
Original commit message:
Adjust InvokeFunction to avoid generating dead code when number when arity mismatch is detected in compile time.
BUG=
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Review URL: https://chromiumcodereview.appspot.com/9150026
Patch from Daniel Kalmar <kalmard@homejinni.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10456 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This CL introduces a third mode next to the non-strict
(henceforth called 'classic mode') and 'strict mode'
which is called 'extended mode' as in the current
ES.next specification drafts. The extended mode is based on
the 'strict mode' and adds new functionality to it. This
means that most of the semantics of these two modes
coincide.
The 'extended mode' is entered instead of the 'strict mode'
during parsing when using the 'strict mode' directive
"use strict" and when the the harmony-scoping flag is
active. This should be changed once it is fully specified how the 'extended mode' is entered.
This change introduces a new 3 valued enum LanguageMode
(see globals.h) corresponding to the modes which is mostly
used by the frontend code. This includes the following
components:
* (Pre)Parser
* Compiler
* SharedFunctionInfo, Scope and ScopeInfo
* runtime functions: StoreContextSlot,
ResolvePossiblyDirectEval, InitializeVarGlobal,
DeclareGlobals
The old enum StrictModeFlag is still used in the backend
when the distinction between the 'strict mode' and the 'extended mode' does not matter. This includes:
* SetProperty runtime function, Delete builtin
* StoreIC and KeyedStoreIC
* StubCache
Review URL: http://codereview.chromium.org/8417035
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Port r9837 (38061af).
Port r9834 (95ac04).
Original commit message (r9834):
Also, handlify functions for loading with interceptors and callbacks.
Remove some unneeded code. Rename Foreign::address() because it
confusingly shadows HeapObject::address() which does something quite
different.
BUG=
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Review URL: http://codereview.chromium.org/8400087
Patch from Gergely Kis <gergely@homejinni.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9844 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This ports the following list of commits to mips. It is provided in this form
so that the mips port of the new-gc can be easily tested on your end.
This must be downloaded or landed after http://codereview.chromium.org/8106002
This is based on r9585. With these two mips commits, all tests are passing.
9319 Fix a harmless assert and a genuine bug in the GC-safety of stub generation ...
9329 ARM: Pregenerate some stubs that we call from other stubs.
9335 Initialize pre-allocated fields of JSObject with undefined.
9344 Put back the asserts in RememberedSetHelper, but correct this time
9370 Reorganize object type enum, such that proxies are no longer in the middle...
9392 Basic support for tracking smi-only arrays on ia32.
9402 Notify collector about lazily deoptimized code objects.
9411 Porting r9392 to arm (smi-only arrays).
9418 Small refactor to KeyedStoreIC::GenerateGeneric to make it slightly faster.
9447 Tighten up assertions checking GC-safety of stub calls.
9449 Record function call targets, use them for inlining.
9459 Make sure we don't flush the pregenerated stubs, since they need to b
9461 Fix the build on ARM
9466 Move the is_pregenerated flag so it does not overlap other flags....
9468 Fix the no-VFP3 build on ARM.
9475 Pass correct anchor_slot for EMBEDDED_OBJECT pointers from
9490 Adjust assertions in UpdateSlot to match UpdatePointer in PointersUpdatingVisitor.
9511 Clean list of external references from internal objects like the hole value.
9514 Simplify compares in KeyedStoreIC::GenerateGeneric.
9531 Porting r9456 to arm (Optimize KeyedStoreGeneric for Smi arrays).
9541 Fix load of potentially eval-shadowed let bindings.
9542 Fast allocation of block contexts.
9553 Activate smi-only optimizations for large array literals.
9575 Move declaration of SerializedScopeInfo from variables.h to objects.h
9577 Track elements_kind transitions in KeyedStoreICs.
9583 Fixing a bug in arm as pointed out in issue 1759.
9584 Refactor and fix polymorphic KeyedStoreIC creation.
BUG=
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Review URL: http://codereview.chromium.org/8112008
Patch from Paul Lind <pling44@gmail.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Highlights:
- code-stubs-mips.cc
-- use EmitFPUTruncate in place of inline code in several places.
-- use BranchF macro rather than lower-level FP cmp and branch for readability.
-- Port of Sven's r8859 (Implement type recording for ToBoolean) and r8886
(Simplify and optimize ToBoolean handling.)
-- Fix bug in TranscendentalCacheStub::Generate where some regs were not
saved across CFunction call.
-- use updated xxxCFunction macros.
-- update InstanceOfStub to support crankshaft
DoDeferredLInstanceOfKnownGlobal
-- Provide code-patching and I-cache flushing support for generated
code, used for InstanceOfStub under crankshaft (not submitted here).
This requires adding new ExternalReference to src/assember.cc,h
- stub-cache-mips.cc
-- port Danno's r8901 (Create a common base class for Fixed-, FixedDouble-
and ExternalArrays) to mips crankshaft branch.
BUG=
TEST=
Review URL: http://codereview.chromium.org/7890001
Patch from Paul Lind <plind44@gmail.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9308 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
1) Don't make a call to C without having a valid frame on the stack.
2) Don't generate a call to a stub while generating a stub, unless we can be
sure that the stub we are calling has already been generated (the stub
generation code is not reentrant wrt. GC).
Review URL: http://codereview.chromium.org/7891042
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9297 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Test regress-91013.js (to ensure that the stored value was returned) passed on mips
without this fix, since the input value (in value_reg, a0) also happens to be in
mips return value register v0 at the time of call.
But it is fragile to depend on that behavior, so an explicit move from a0 to v0
is warranted. This fix puts that move in the delay slot of the Ret().
Patch by Paul Lind.
BUG=
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Review URL: http://codereview.chromium.org/7779006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9035 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Port r8244 (c90151c)
Orig commit msg:
Dispatch on ElementsKind rather than ExternalArrayType when generating ICs
and Crankshaft code for many element operations. This is preparation to be
able to share more code in the various element accessor implementations.
BUG=
TEST=
Review URL: http://codereview.chromium.org//7134064
Patch from Paul Lind <plind44@gmail.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Ported commits: r8126 (6461bae)
Original commit message:
- Introduce a class JSReceiver, that is a common superclass of JSObject and
JSProxy. Use JSReceiver where appropriate (probably lots of places that we
still have to migrate, but we will find those later with proxy test suite).
- Move appropriate methods to JSReceiver class (SetProperty,
GetPropertyAttribute, Get/SetPrototype, Lookup, and so on).
- Introduce new JSFunctionProxy subclass of JSProxy. Currently only a stub.
- Overhaul enum InstanceType:
* Introduce FIRST/LAST_SPEC_OBJECT_TYPE that ranges over all types that
represent JS objects, and use that consistently to check language types.
* Rename FIRST/LAST_JS_OBJECT_TYPE and FIRST/LAST_FUNCTION_CLASS_TYPE
to FIRST/LAST_[NON]CALLABLE_SPEC_OBJECT_TYPE for clarity.
* Eliminate the overlap over JS_REGEXP_TYPE.
* Also replace FIRST_JS_OBJECT with FIRST_JS_RECEIVER, but only use it where
we exclusively talk about the internal representation type.
* Insert JS_PROXY and JS_FUNCTION_PROXY in the appropriate places.
- Fix all checks concerning classification, especially for functions, to
use the CALLABLE_SPEC_OBJECT range (that includes funciton proxies).
- Handle proxies in SetProperty (that was the easiest part :) ).
- A few simple test cases.
BUG=
TEST=
Review URL: http://codereview.chromium.org/7024041
Patch from Paul Lind <plind44@gmail.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8175 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
