AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity
11,092 Commits 1 Branch 0 Tags 839 MiB
628875475e
Commit Graph

1942 Commits

Author SHA1 Message Date
mvstanton@chromium.org
46af26a5db A debug code assert needed to be behind the new optimize_constructed_arrays flag. 
BUG=

Review URL: https://codereview.chromium.org/12385050

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13791 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-03-01 16:59:53 +00:00
mvstanton@chromium.org
c4caf766bf Allocation Info Tracking, continued. 
Addresses missing cases for array literals.
Adds support for "new Array()" call sites. This isn't complete yet, I have to run with --noinline_new.

BUG=

Review URL: https://codereview.chromium.org/11818021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13790 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-03-01 16:06:34 +00:00
rossberg@chromium.org
090d09d685 ES6 symbols: Implement Symbol intrinsic and basic functionality 
- Add --harmony-symbols flag.
- Add Symbol constructor; allow symbols as (unreplaced) return value from constructors.
- Introduce %CreateSymbol and %_IsSymbol natives and respective instructions.
- Extend 'typeof' code generation to handle symbols.
- Extend CompareIC with a UNIQUE_NAMES state that (uniformly) handles internalized strings and symbols.
- Property lookup delegates to SymbolDelegate object for symbols, which only carries the toString method.
- Extend Object.prototype.toString to recognise symbols.

Per the current draft spec, symbols are actually pseudo objects that are frozen with a null prototype and only one property (toString). For simplicity, we do not treat them as proper objects for now, although typeof will return "object". Only property access works as if they were (frozen) objects (via the internal delegate object).

(Baseline CL: https://codereview.chromium.org/12223071/)

R=mstarzinger@chromium.org
BUG=v8:2158

Review URL: https://codereview.chromium.org/12296026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13786 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-03-01 13:28:55 +00:00
mstarzinger@chromium.org
05f1be1bb3 Unify deoptimizer for accessor and arguments frames. 
This unifies the translation of artificial accessor stub and arguments
adaptor frames. The frame layout is the same on all architectures and
the computation code can be shared.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/12374044

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13784 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-03-01 12:23:24 +00:00
rossberg@chromium.org
55f93b5532 Renamed "symbols" to "internalized strings" throughout the code base, 
in preparation of the introduction of ES6 'symbols' (aka private/unique names).

The SymbolTable became the StringTable. I also made sure to adapt all comments. The only remaining use of the term "symbol" (other than unrelated uses in the parser and such) is now 'NewSymbol' in the API and the 'V8.KeyedLoadGenericSymbol' counter, changing which might break embedders.

The one functional change in this CL is that I removed the former 'empty_string' constant, since it is redundant given the 'empty_symbol' constant that we also had (and both were used inconsistently).

R=yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/12210083

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13781 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-28 17:03:34 +00:00
rossberg@chromium.org
8924d03e16 Minor cleanup of CompareIC state 
Allow transitioning from KNOWN_OBJECT to KNONW_OBJECT or OBJECT.
Also, rename HEAP_NUMBER IC states to NUMBER, since they handle Smis, too.

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/12254036

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13775 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-28 14:43:57 +00:00
verwaest@chromium.org
3ab255f55d Currently this mostly just moves code around. 
- Later the different parts will become individual code objects that tailcall into one another.
- The mapcheck/symbol check still needs to be separated from the overall prototype-chain check so that the ICs can reuse the handlers.

Review URL: https://chromiumcodereview.appspot.com/12209021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13768 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-27 15:28:53 +00:00
svenpanne@chromium.org
bfaf38d2fd Miscellaneous profile-driven Isolate plumbing. 
While doing this, it became clear that quite a few functions should not be
static and should better live in various classes as instance methods, but I'll
leave this for a later CL.

BUG=v8:2487

Review URL: https://codereview.chromium.org/12314152

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13765 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-27 14:45:59 +00:00
mstarzinger@chromium.org
ea5e9edac4 Fix materialization of arguments objects with unknown values. 
This fixes the deoptimizer to materialize arguments objects of correct
length even in cases where the actual argument values are unknown and
were optimized away by Crankshaft. This can happen if only the length
property or the identity of an arguments object is used.

R=svenpanne@chromium.org
BUG=chromium:163530
TEST=mjsunit/regress/regress-crbug-163530

Review URL: https://codereview.chromium.org/12335132

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13763 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-27 14:37:51 +00:00
svenpanne@chromium.org
c26d100b10 Avoid TLS accesses in Object::Lookup and Object::GetPrototype. 
Both methods were among the top causes for TLS accesses.

BUG=v8:2487

Review URL: https://codereview.chromium.org/12319144

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13759 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-27 13:22:29 +00:00
svenpanne@chromium.org
6e829ed485 Added Isolate parameter to CodeStub::GetCode(). 
According to gprof, this was the #1 cause for TLS access during an Octane run.

BUG=v8:2487

Review URL: https://codereview.chromium.org/12317141

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-27 12:33:24 +00:00
ulan@chromium.org
d18e118f17 ARM: Fix disassembly of some VFP instructions with condition codes 
Previously, we would disassemble some VFP instructions like this:

  vmla.f64eq d16, d17, d18

This patch moves the condition to the right place:

  vmlaeq.f64 d16, d17, d18

Spotted by Rodolph Perfetta!

BUG=none

Review URL: https://chromiumcodereview.appspot.com/12335129
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13752 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-27 11:52:45 +00:00
ulan@chromium.org
87265114c4 Emit VMLS for multiply-subtract on ARM. 
BUG=none

Review URL: https://chromiumcodereview.appspot.com/12319113
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13748 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-27 10:24:40 +00:00
mstarzinger@chromium.org
7d681e014d Compile FastCloneShallowObjectStub using Crankshaft. 
This changes FastCloneShallowObjectStub to be compiled independent of
the target architecture. It also adds tracing to the deoptimizer for
compiled stubs and contains some minor bugfixes.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/12220074

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13732 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-26 13:08:08 +00:00
yangguo@chromium.org
72b802f27a Refactor RegExpStub to check lazily. 
R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/12210143

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-26 09:53:07 +00:00
ulan@chromium.org
9ebcfb41e2 ARM: Make DoStoreKeyedFixedDoubleArray faster; don't allow conditional Vmov 
This patch makes us generate faster code for DoStoreKeyedFixedDoubleArray,
by using a branch rather than a conditional Vmov instruction.

Conditional VFP instructions are not a great idea in general, and it was
especially bad in this case because Vmov expands to a bunch of instructions.
For this reason, the patch also removes the 'cond' parameter from Vmov.

Thanks to Rodolph for pointing me to this!

BUG=none

Review URL: https://chromiumcodereview.appspot.com/12316096
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13722 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-25 16:15:37 +00:00
svenpanne@chromium.org
fb6776e84a Made Isolate a mandatory parameter for everything Handle-related. 
Unified parameter order of CreateHandle with the rest of v8 on the way. A few
Isolate::Current()s had to be introduced, which is not nice, and not every place
will win a beauty contest, but we can clean this up later easily in smaller steps.

Review URL: https://codereview.chromium.org/12300018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13717 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-25 14:46:09 +00:00
mmassi@chromium.org
8ef28eb5ee Fixed numeric relations on HPhi instances. 
Review URL: https://codereview.chromium.org/12301027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13703 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-21 10:22:31 +00:00
yangguo@chromium.org
215ba8cfc9 Combine %_SubString and %_StringCharAt. 
R=ulan@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/12217071

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13700 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-20 14:29:40 +00:00
mstarzinger@chromium.org
b5a64451b1 Ensure deopt entries have no relocation information. 
R=ulan@chromium.org
BUG=chromium:176943

Review URL: https://codereview.chromium.org/12314012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13698 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-20 13:12:26 +00:00
ulan@chromium.org
3a1eca4242 Remove prototype checks for leaf maps in optimized code. 
Review URL: https://chromiumcodereview.appspot.com/12225099

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13697 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-20 11:49:54 +00:00
palfia@homejinni.com
7349746b22 ARM: Remove unused flag in lithium-codegen. 
This flag was added by commit r13585.

BUG=

Review URL: https://codereview.chromium.org/12258013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13677 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-15 13:01:28 +00:00
ulan@chromium.org
817ce7285f Register dependent codes before populating deoptimization data, which can cause GC. 
R=mstarzinger@chromium.org

BUG=crash on nosnap-debug with stress-compaction

Review URL: https://chromiumcodereview.appspot.com/12256038

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13669 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-14 13:48:20 +00:00
ulan@chromium.org
250ebdc2be ARM: Change signature for vmov.32 function in the assembler 
The assembler has 8 different vmov variants. The one for vmov.32 and for moving
an immediate into a double reg only differs in the type of the second
paremeter: vmov.32 takes an int, the other takes a double.

The situation is dangerous because C++ will happily implicitly convert between
int and double.

This patch changes the signature of the vmov.32 assembler function so that it
cannot be confused with the other vmovs.

BUG=none

Review URL: https://chromiumcodereview.appspot.com/12255031
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13668 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-14 12:28:02 +00:00
mmassi@chromium.org
a5c6716cf5 Infrastructure classes for evaluating numeric relations between values. 
Review URL: https://codereview.chromium.org/12226112

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13656 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-13 14:16:15 +00:00
dcarney@chromium.org
0da6e525b7 Split AccessorInfo into DeclaredAccessorInfo and ExecutableAccessorInfo 
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/12213012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13649 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-12 14:33:08 +00:00
mmassi@chromium.org
2fb5064487 Separated smi check from HBoundsCheck. 
Review URL: https://codereview.chromium.org/12208013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13645 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-12 11:44:08 +00:00
mstarzinger@chromium.org
89474cdede Fix bugs in DeoptimizeIf when lazy deopt is requested. 
This also implements --trap-on-deopt on x64 and simplifies the
implementation of this flag on all architectures.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/12223053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13633 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-08 17:32:47 +00:00
jkummerow@chromium.org
b1d7878c7f Fix DoubleStackSlot-to-DoubleStackSlot moves on ia32. Unify platform-independent code. 
BUG=173907

Review URL: https://codereview.chromium.org/12207063

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13617 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-07 13:15:41 +00:00
verwaest@chromium.org
f08b6ecac7 Split CompileCallConstant into logical parts for Frontend and Backend. 
Initial step towards separating IC (map check(s)), handler frontend
(prototype-check) and handler backend (actual handler code).

- Still need to split the map-check (IC) from rest of the prototype
  chain check.
- Still need to turn different parts in own code objects and cache them
  in more optimal places.

Review URL: https://chromiumcodereview.appspot.com/12207016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13604 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-06 11:48:29 +00:00
ulan@chromium.org
4485930247 ARM: Try to avoid VMSR instruction and drop redundant VCVT 
We were doing a redundant VCVT operation in MacroAssembler::EmitECMATruncate.
Also, setting the FPSCR exception flags is expensive on some CPUs, wo we should
try to avoid it if we can.

Thanks to Rodolph Perfetta for the input on this!

Review URL: https://chromiumcodereview.appspot.com/12217014
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-06 10:32:02 +00:00
danno@chromium.org
940b65160a Add separate flag for --trace-stub-failures 
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/12208011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13598 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-05 16:28:36 +00:00
danno@chromium.org
4c052815df Support pass-through of stub caller arguments 
Review URL: https://codereview.chromium.org/12093089

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13593 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-05 08:09:32 +00:00
danno@chromium.org
0c3575c874 Generate the TransitionElementsStub using Crankshaft 
This includes:
* Adding support for saving callee-clobbered double registers in Crankshaft code.
* Adding a new "HTrapAllocationMemento" hydrogen instruction to handle AllocationSiteInfo data in crankshafted stubs.
* Adding a new "HAllocate" hydrogen instruction that can allocate raw memory from the GC in crankshafted code.
* Support for manipulation of the hole in HChange instructions for Crankshafted stubs.
* Utility routines to manually build loops and if statements containing hydrogen code.

Review URL: https://codereview.chromium.org/11659022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13585 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-04 12:01:59 +00:00
ulan@chromium.org
23ee3f285a Make the arm port build cleanly with Clang. 
This fixes the following two warnings, so that "make all" builds cleanly
with Clang:

  src/arm/macro-assembler-arm.h:1410:7: error: private field
  'instructions_' is not used
        [-Werror,-Wunused-private-field]
          int instructions_;  // Number of instructions of the expected patch size.
              ^

  src/arm/simulator-arm.cc:402:20: error: variable 'words' is used uninitialized whenever 'if'
        condition is false [-Werror,-Wsometimes-uninitialized]
          } else if (argc == next_arg + 1) {
                     ^~~~~~~~~~~~~~~~~~~~
  ../src/arm/simulator-arm.cc:407:21: note: uninitialized use occurs here
          end = cur + words;
                      ^~~~~
  ../src/arm/simulator-arm.cc:402:16: note: remove the 'if' if its condition is always true
          } else if (argc == next_arg + 1) {
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~

Review URL: https://chromiumcodereview.appspot.com/12087131

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13583 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-04 10:30:54 +00:00
verwaest@chromium.org
0d89d9a019 Merge KeyedLoad and NamedLoad stub compiler code. 
Review URL: https://chromiumcodereview.appspot.com/12094082

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13579 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-01 13:39:36 +00:00
danno@chromium.org
df2a62fb25 ARM: Add comments to clarify conditionally executed code dealing with d16-d31 
Review URL: https://codereview.chromium.org/12087132
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13578 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-02-01 11:57:22 +00:00
verwaest@chromium.org
b1e5157e7b Support slow-mode prototypes for load and call ICs. 
This changes LoadNonExistent to handle negative lookups as well.

Review URL: https://chromiumcodereview.appspot.com/12092043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13571 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-31 16:18:18 +00:00
danno@chromium.org
f7bae62cd3 Fix gbemu preformance regression 
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/12084063

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13557 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-30 14:25:34 +00:00
ulan@chromium.org
3b24f64e3d ARM Deoptimizer: fix TODO from r13484 
This lets the Deoptimizer pointer stay in r0, saving a mov and
simplifying the code a little.

BUG=none
TEST=Tested with test/mjsunit/math-floor-of-div.js, this fails reliably if OSR is broken

Review URL: https://chromiumcodereview.appspot.com/12082046
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13550 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-30 10:24:00 +00:00
ulan@chromium.org
3a23c2f7df Make DwVfpRegister::AllocationIndexToString use VFPRegister::Name 
This also fixes a bug caused by a missing comma after "d13" in
the 'names' array in AllocationIndexToString.

BUG=none

Review URL: https://chromiumcodereview.appspot.com/12082044
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13548 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-30 09:55:49 +00:00
ulan@chromium.org
d16c2d6093 ARM: Rename Simulator::vfp_register to vfp_registers_ 
This matches Simulator::registers_ and is in line with the style guide.

BUG=none

Review URL: https://chromiumcodereview.appspot.com/12096036
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13547 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-30 09:50:25 +00:00
mmassi@chromium.org
89c4153581 Foundation for the use of informative definitions in Crankshaft. 
Review URL: https://codereview.chromium.org/12090021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13543 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-29 15:46:34 +00:00
danno@chromium.org
80157b61a8 Fix Mac problem with stubs initialization 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/12096040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13542 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-29 15:28:05 +00:00
danno@chromium.org
a6bc16b6f3 Add StubFailureTrampolineFrames 
In preparation of supporting stubs that deopt and then need to push their
register-based parameters to an arguments area on the stack that gets properly
collected, add StubFailureTrampolineFrames to hold those parameters.

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/12052053

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13533 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-29 09:12:20 +00:00
svenpanne@chromium.org
905548d2f6 Improved printing of jump tables. 
Review URL: https://codereview.chromium.org/12093016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13531 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-28 14:50:47 +00:00
verwaest@chromium.org
09d6eccaff Replace store array length builtin with codestub. 
Also includes some other minor cleanup to make Keyed related IC code
more uniform.

Review URL: https://chromiumcodereview.appspot.com/11896091

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13506 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-25 11:55:29 +00:00
ulan@chromium.org
bed569b548 ARM: Make use of d16-d31 when available. 
Review URL: https://chromiumcodereview.appspot.com/11428137
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13484 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-23 16:29:48 +00:00
yangguo@chromium.org
3c22524119 Avoid handle dereference during graph optimization. 
With parallel recompilation enabled, objects made accessible by handles may
have changed between graph construction and graph optimization. Therefore
we must not assume that information on those objects remain the same between
those two phases. To police this, we forbid handle dereferencing during
graph optimization.
Exceptions to this rule are:
 - Dereferencing the handle to obtain the raw location of the object. This
   is safe since parallel recompilation acquires RelocationLock
 - Some places that dereference the handle for a type check. These are checked
   to be safe on a case-by-case basis.

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/12049012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13475 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-23 13:52:00 +00:00
mvstanton@chromium.org
90d0f18007 Incorrect ARM assembly in MacroAssembler::TestJSArrayForAllocationSiteInfo 
Restored test code in allocation-site-info.js that was failing on ARM because of this bug.

BUG=

Review URL: https://codereview.chromium.org/12045017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13462 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-22 10:49:23 +00:00
verwaest@chromium.org
b79a927e74 Migrate FunctionPrototype (Keyed|Named)LoadIC to CodeStub 
Review URL: https://chromiumcodereview.appspot.com/11941016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13459 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-21 17:54:36 +00:00
verwaest@chromium.org
f80379f3fb Migrate ArrayLength (Keyed|Named)LoadIC to CodeStub 
Review URL: https://chromiumcodereview.appspot.com/11938013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-21 17:17:02 +00:00
yangguo@chromium.org
7f331f6280 Make HCheckPrototypeMaps compatible with parallel recompilation. 
HCheckPrototypeMaps currently records the prototype and the holder of the
prototype chain (both ends of the chain) and assumes that the chain elements
and their maps did not change in during the entirety of Crankshaft. The actual
traversal of the prototype chain happens in Lithium at code generation.
With parallel compilation, this assumption is not longer correct.

R=mstarzinger@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11864013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13454 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-21 15:49:00 +00:00
verwaest@chromium.org
c3d45451f0 Replace special IC builtins and stubs in the map's cache by codestubs. 
Review URL: https://chromiumcodereview.appspot.com/11973008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13453 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-21 14:53:29 +00:00
mvstanton@chromium.org
d7d917e6f0 Out of bounds memory access in TestJSArrayForAllocationSiteInfo. 
The function intended to check the map pointer of an AllocationSiteInfo object, but neglected to
subtract an offset to do so.

BUG=169928

Review URL: https://codereview.chromium.org/11931037

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13444 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-21 12:26:29 +00:00
mmassi@chromium.org
ca78326b66 Revert r13409 ("Make the array bounds check elimination phase optional (and set the foundation for introducing SSI in a simple way).") because of a crash in octane/mandreel. 
Review URL: https://chromiumcodereview.appspot.com/11962041

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13416 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-17 16:09:08 +00:00
jkummerow@chromium.org
a496e0d06a Don't emit code for instructions that are hiding behind an HSoftDeoptimize 
Review URL: https://codereview.chromium.org/11377135

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13412 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-17 14:07:47 +00:00
mmassi@chromium.org
583f67b54b Make the array bounds check elimination phase optional (and set the foundation for introducing SSI in a simple way). 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11783055

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13409 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-17 12:39:16 +00:00
mvstanton@chromium.org
7884216804 Additional work to get array literal allocation tracking working, even with --always-opt 
BUG=

Review URL: https://codereview.chromium.org/11817017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13406 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-17 08:41:27 +00:00
yangguo@chromium.org
89bef51aca Remove move ascii data hint for one byte strings 
This is mostly a rollback of r12966
[Make kAsciiDataHintTag have correct semantics for all both 1 and 2 byte string types.]

R=yangguo@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11857015
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13375 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-14 15:17:56 +00:00
yangguo@chromium.org
e41c17084f Continues Latin-1 support. All tests pass with ENABLE_LATIN_1 flag. 
R=yangguo@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11818025
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13344 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-09 15:47:53 +00:00
jkummerow@chromium.org
aee9febccc Some more instrumentation to narrow down Failure leaks. 
The basic idea is to tag OOM-Failure objects with an ID indicating where they were created. This requires changes to equality comparisons.

Note to MIPS folks: I'm planning to revert this CL in a couple of days, so feel free to skip porting the platform-specific changes.

BUG=chromium:156010

Review URL: https://codereview.chromium.org/11818023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13341 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-09 12:29:06 +00:00
yangguo@chromium.org
45f20e366a Introduce ENABLE_LATIN_1 compile flag 
Mostly a bunch of renaming when flag is disabled.

R=yangguo@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11759008
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13340 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-09 10:30:54 +00:00
verwaest@chromium.org
c386538cd2 Use POLYMORPHIC for polymorphic Keyed(Load|Store)IC 
Review URL: https://chromiumcodereview.appspot.com/11794045

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13332 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-08 12:01:51 +00:00
mvstanton@chromium.org
529f801fde Adapt Danno's Track Allocation Info idea to fast literals. When allocating a literal array, 
we store an AllocationSiteInfo object right after the JSArray, with a pointer to the
boilerplate object. Later, if the array transitions we check for the continued existence
of the temporary AllocationSiteInfo object (has no roots). If found, we'll use it to
transition the boilerplate array as well.

Danno's original changeset: https://codereview.chromium.org/10615002/

Review URL: https://codereview.chromium.org/11663005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13330 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-08 09:03:16 +00:00
yangguo@chromium.org
61f4012989 Use C++ style type casts. 
R=mstarzinger@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11644097

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13326 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-07 15:02:56 +00:00
danno@chromium.org
4246ac3009 Generalize calling to C++ on stub deopt 
Remove code specific to KeyedLoadICs in DoCompiledStubFrame on all platforms, driving stub frame translation by the register parameter information found in a stub's CodeStubInterfaceDescriptor.

Review URL: https://codereview.chromium.org/11635015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13320 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-07 10:06:11 +00:00
ulan@chromium.org
4403daca1a ARM: generate integer zero in a uniform manner. 
ARM generated integer zero as either Operand(0, RelocInfo::NONE32), or
Operand(0), or Operand::Zero(). My change makes it use only
Operand::Zero().

This has no functional impact, it's pure cleanup.

R= ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11745030
Patch from JF Bastien <jfb@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13318 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-07 09:43:12 +00:00
verwaest@chromium.org
a8962e89b3 Use enum instead of bool for force_generic (MISS / MISS_FORCE_GENERIC) 
Review URL: https://chromiumcodereview.appspot.com/11737032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13314 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-04 15:37:59 +00:00
ulan@chromium.org
0606abbaab Rename RelocInfo::NONE to RelocInfo::NONE32. 
This CL only does renaming, nothing else.

Followup to:
https://chromiumcodereview.appspot.com/11695006/

There are now NONE and NONE64 RelocInfo types, but only ARM uses them
both at the same time. They were added in:
https://chromiumcodereview.appspot.com/11191029/

R= ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11744020
Patch from JF Bastien <jfb@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13311 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-04 10:56:24 +00:00
svenpanne@chromium.org
840b1a37da Fixed printing of LInstructions in the presence of optional arguments 
TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/11743012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13294 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-01-03 07:23:33 +00:00
danno@chromium.org
45a012ec2c Elide unnecessary context reload in generated stubs. 
Review URL: https://codereview.chromium.org/11550005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13290 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-28 16:25:38 +00:00
ulan@chromium.org
eb27eb0351 Enable type feedback for branch statement and function call 
This change associates TypeFeedbackIds with ToBoolean stubs in
full-compiled code on ARM, allowing their information to be used in
Crankshaft. This eliminates unnecessary checks, especially in
DoBranch.

Review URL: https://chromiumcodereview.appspot.com/11635046
Patch from Jay Conrod <dconrod@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13288 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-28 15:14:44 +00:00
ulan@chromium.org
a7f9c491dc Use VLDR instead of VMOVs from GPR when a 64-bit double can't be encoded as a VMOV immediate. 
This requires constant blinding before it can be enabled. There are other interesting optimizations that can be added later, detailed in a TODO.

BUG=optimization
R=ulan@chromium.org,mstarzinger@chromium.org, hwennborg@google.com

Review URL: https://chromiumcodereview.appspot.com/11191029
Patch from JF Bastien <jfb@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13286 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-28 13:34:15 +00:00
danno@chromium.org
17326e8746 Refactor and improve inlined double-aligned allocations 
Change is performance neutral but generates smaller code and encapsulates double alignment in the macro-assembler rather than at the allocation site.

Review URL: https://codereview.chromium.org/11684005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-28 11:09:16 +00:00
danno@chromium.org
653a66f527 ARM: Use division instructions in lithium and stubs 
BUG=none
TEST=Added to test/mjsunit/math-floor-of-div.js, math-floor-of-div-nosudiv.js

Review URL: https://codereview.chromium.org/11316105
Patch from Martyn Capewell <m.m.capewell@googlemail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13257 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-20 16:31:19 +00:00
danno@chromium.org
09fec366f8 Remove redundant loads in DoCheckMaps 
Hoist the loop-invariant load out of the loop and call the other CheckMap function
BUG=none
TEST=none

Committed: https://code.google.com/p/v8/source/detail?r=13200

Review URL: https://codereview.chromium.org/11369014
Patch from Rajeev Krithivasan <rkrithiv@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-20 14:05:14 +00:00
yangguo@chromium.org
9eccd63ccc Fix ARM code for DoModI. 
R=ulan@chromium.org
BUG=166379

Review URL: https://chromiumcodereview.appspot.com/11618020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-20 09:07:05 +00:00
danno@chromium.org
1f4b4625ff Re-land Crankshaft-generated KeyedLoad stubs. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11528003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13236 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-18 16:25:45 +00:00
rossberg@chromium.org
c6bb497437 Simplify implementation of assignment-to-const checks. 
Also, add test that assignment to function name is a syntax error with harmony scoping.

Does not fix issue 2243 directly, but with ES6, the required behaviour will change to what is implemented already anyway.

R=yangguo@chromium.org
BUG=v8:2243

Review URL: https://codereview.chromium.org/11607016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13234 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-18 12:00:50 +00:00
ulan@chromium.org
6e12a16aac Use a filter instead of a visitor to deoptimize selected functions in a context. 
This makes the DeoptimizeAll function O(n) instead of O(n^2) where n in the number of optimized functions.

Before this change, DeoptimizeAll iterated over the optimized function list and called DeoptimizingVisitor for each function. The visitor iterated over the optimized function list again to remove the functions that share the same optimized code.

This change partitions the optimized function list into one or more lists of related functions in one pass over the optimized function list.

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11547015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13226 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-17 10:23:52 +00:00
jkummerow@chromium.org
e318155c6e Revert "Remove redundant loads in DoCheckMaps" 
This reverts r13200.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/11552017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13206 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-12 12:51:47 +00:00
danno@chromium.org
3f83e10f44 Remove redundant loads in DoCheckMaps 
Hoist the loop-invariant load out of the loop and call the other CheckMap function
BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/11369014
Patch from Rajeev Krithivasan <rkrithiv@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13200 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-11 20:33:44 +00:00
danno@chromium.org
64fc1f99cb Revert 13157, 13145 and 13140: Crankshaft code stubs. 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/11498006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13179 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-10 11:09:12 +00:00
ulan@chromium.org
c5c8276f59 Improve double to integer truncation on ARM. 
BUG=none
TEST=none

Review URL: https://chromiumcodereview.appspot.com/11412272
Patch from Rodolph Perfetta <rodolph.perfetta@gmail.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13162 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-07 11:29:27 +00:00
svenpanne@chromium.org
17def81fc9 Use count-based profiling exclusively. 
Review URL: https://codereview.chromium.org/11437016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13158 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-07 08:55:06 +00:00
danno@chromium.org
84f2454eac Fix isolate bug introduced by generated code stubs 
Review URL: https://codereview.chromium.org/11441013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13145 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-05 16:16:32 +00:00
yangguo@chromium.org
c75ca45000 Improve array to string conversion. 
BUG=v8:2435

Review URL: https://chromiumcodereview.appspot.com/11348349

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13144 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-05 15:49:22 +00:00
danno@chromium.org
f19959cd22 Enable stub generation using Hydrogen/Lithium (again) 
This initial implementation generates only KeyedLoadICs using the new Hydrogen stub infrastructure.

Committed: https://code.google.com/p/v8/source/detail?r=13105

Committed: https://code.google.com/p/v8/source/detail?r=13117

Review URL: https://codereview.chromium.org/10701054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13140 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-05 11:04:10 +00:00
danno@chromium.org
66f6a8182c Revert 13117: "Enable stub generation using Hydrogen/Lithium (again)" 
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/11415261

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13120 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-03 17:16:51 +00:00
danno@chromium.org
78b09625d5 Enable stub generation using Hydrogen/Lithium (again) 
This initial implementation generates only KeyedLoadICs using the new Hydrogen stub infrastructure.

Committed: https://code.google.com/p/v8/source/detail?r=13105

Review URL: https://codereview.chromium.org/10701054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13117 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-03 15:51:05 +00:00
ulan@chromium.org
45fc19124f ARM: make MacroAssembler::LoadRoot emit exactly one instruction when in predictable code size scope. 
BUG=v8:2439
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11280276

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13113 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-12-03 13:40:37 +00:00
danno@chromium.org
ecdbe77686 ARM: fix a bug with saving lr register in GenerateSmiToDouble. 
BUG=163197
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11419255
Patch from Ulan Degenbaev <ulan@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13107 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-30 20:58:51 +00:00
danno@chromium.org
0a3bcc8c05 Revert 13105: "Enable stub generation using Hydrogen/Lithium." 
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/11414262

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13106 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-30 17:45:45 +00:00
danno@chromium.org
c115ff4e33 Enable stub generation using Hydrogen/Lithium. 
This initial implementation generates only KeyedLoadICs using the new Hydrogen stub infrastructure.

Review URL: https://codereview.chromium.org/10701054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13105 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-30 17:31:30 +00:00
svenpanne@chromium.org
5a4e0f1c79 Simplify and fix code aging. 
Making the code size predictable is hard, and to make things even more
complicated, the start of a function can contain various stuff like calls to a
profiling hook, receiver adjustment or dynamic frame alignment. Instead of
tackling all these problems separately, we now simply record the offset where
patching should happen later in the Code object itself.

Review URL: https://codereview.chromium.org/11316218

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13081 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-29 07:38:00 +00:00
yangguo@chromium.org
432be2c8fd Also time external callbacks from generated code. 
R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11411224

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13078 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-28 15:11:21 +00:00
verwaest@chromium.org
5ef423b6d7 Only fill in holes if storing the number to the double array has succeeded. 
Review URL: https://chromiumcodereview.appspot.com/11299200

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13067 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-27 13:27:15 +00:00
verwaest@chromium.org
beeb751278 Ensure we do not clobber the register holding the elements backing store. 
Review URL: https://chromiumcodereview.appspot.com/11316168

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13061 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-26 15:58:27 +00:00
verwaest@chromium.org
ebeaad6cb5 Ensure double arrays are filled with holes when extended from variations of empty arrays. 
BUG=162085

Review URL: https://chromiumcodereview.appspot.com/11414155

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13056 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-26 14:29:21 +00:00
jkummerow@chromium.org
79563b22c9 Faster implementation of Math.exp() 
Review URL: https://codereview.chromium.org/11418149

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13054 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-26 13:12:35 +00:00
mmassi@chromium.org
a0582112f8 Revert r13025 and r13026 (they introduced a bug on arm and regressed octane crypto). 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11316151

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13039 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-23 10:53:03 +00:00
svenpanne@chromium.org
9de70742a6 PredictableCodeSizeScope checks the expected size now. 
We still have some problems on ARM, so the size check currently
optional. Furthermore, we don't use PredictableCodeSizeScope at all
place where we should do it. Both issues are cleaned up in upcoming
CLs.

Review URL: https://codereview.chromium.org/11348195

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13037 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-22 14:59:52 +00:00
svenpanne@chromium.org
51f5a8e7c7 Moved buffer handling to AssemblerBase. 
This removed a lot of copy-n-paste code and is very handy for some upcoming
changes (regarding predictable code size).

Review URL: https://codereview.chromium.org/11416133

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13034 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-22 10:28:29 +00:00
rossberg@chromium.org
ce05280bfc Get rid of static module allocation, do it in code. 
Modules now have their own local scope, represented by their own context.
Module instance objects have an accessor for every export that forwards
access to the respective slot from the module's context. (Exports that are
modules themselves, however, are simple data properties.)

All modules have a _hosting_ scope/context, which (currently) is the
(innermost) enclosing global scope. To deal with recursion, nested modules
are hosted by the same scope as global ones.

For every (global or nested) module literal, the hosting context has an
internal slot that points directly to the respective module context. This
enables quick access to (statically resolved) module members by 2-dimensional
access through the hosting context. For example,

  module A {
    let x;
    module B { let y; }
  }
  module C { let z; }

allocates contexts as follows:

[header| .A | .B | .C | A | C ]  (global)
          |    |    |
          |    |    +-- [header| z ]  (module)
          |    |
          |    +------- [header| y ]  (module)
          |
          +------------ [header| x | B ]  (module)

Here, .A, .B, .C are the internal slots pointing to the hosted module
contexts, whereas A, B, C hold the actual instance objects (note that every
module context also points to the respective instance object through its
extension slot in the header).

To deal with arbitrary recursion and aliases between modules,
they are created and initialized in several stages. Each stage applies to
all modules in the hosting global scope, including nested ones.

1. Allocate: for each module _literal_, allocate the module contexts and
   respective instance object and wire them up. This happens in the
   PushModuleContext runtime function, as generated by AllocateModules
   (invoked by VisitDeclarations in the hosting scope).

2. Bind: for each module _declaration_ (i.e. literals as well as aliases),
   assign the respective instance object to respective local variables. This
   happens in VisitModuleDeclaration, and uses the instance objects created
   in the previous stage.
   For each module _literal_, this phase also constructs a module descriptor
   for the next stage. This happens in VisitModuleLiteral.

3. Populate: invoke the DeclareModules runtime function to populate each
   _instance_ object with accessors for it exports. This is generated by
   DeclareModules (invoked by VisitDeclarations in the hosting scope again),
   and uses the descriptors generated in the previous stage.

4. Initialize: execute the module bodies (and other code) in sequence. This
   happens by the separate statements generated for module bodies. To reenter
   the module scopes properly, the parser inserted ModuleStatements.

R=mstarzinger@chromium.org,svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11093074

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13033 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-22 10:25:22 +00:00
mvstanton@chromium.org
80819f618d Add dehoisting to the string printout of hydrogen and lithium instructions. 
This is nice when looking at hydrogen graphs, to see the real key offset.

R=mmassi@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11348176

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13032 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-22 10:19:05 +00:00
hpayer@chromium.org
ee164ffe3d Use slot instead of value in the write barrier to record write from code. 
BUG=

Review URL: https://codereview.chromium.org/11412096

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13029 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-22 07:05:20 +00:00
mvstanton@chromium.org
2fed381652 Fix performance regression in DXT5Decoder.js. 
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11412129

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13028 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-21 14:01:10 +00:00
mmassi@chromium.org
5e7f30a596 Use the property load IC for accessing the array length. 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11299004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13025 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-21 11:49:15 +00:00
yangguo@chromium.org
36f5b6d41f Rename IsAsciiRepresentation 
This is a straight rename:

IsAsciiRepresentation -> IsOneByteRepresentation
IsAsciiRepresentationUnderneath -> IsOneByteRepresentationUnderneath
AllocateRawAsciiString -> AllocateRawOneByteString
AllocateStringFromAscii -> AllocateStringFromOneByte

R=yangguo@chromium.org,
BUG=

Review URL: https://chromiumcodereview.appspot.com/11308066
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13023 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-21 10:01:05 +00:00
ulan@chromium.org
6a6012c0e7 Emit RSB for subtraction with constant lhs on ARM 
Instead of generating the following for "100 - x":

  mov r1, #100
  subs r0, r1, r0

this patch makes Crankshaft generate this:

  rsbs r0, r0, #100

thus saving a register and a mov.

BUG=

Review URL: https://chromiumcodereview.appspot.com/11308040
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13017 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-20 14:46:16 +00:00
jkummerow@chromium.org
d9ba8ed8a1 Fix register confusion in non-VFP3 BinaryOpStubs on ARM 
Review URL: https://codereview.chromium.org/11413014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12980 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-16 08:54:01 +00:00
svenpanne@chromium.org
d5f589808d Removed a bunch of GetExistingThreadLocal calls by threading the Isolate. 
For Octane, the number of calls go down from 7341629 to 1947880, i.e. they are
reduced by more than 73%. TLS access is not especially cheap, so this exercise
seems worthwhile.

Review URL: https://codereview.chromium.org/11412007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12979 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-16 08:38:11 +00:00
yangguo@chromium.org
3699616609 Rename SeqAsciiString 
This is a straight rename:

NewRawAsciiString -> NewRawOneByteString
SeqAscii -> SeqOneByte

SeqOneByteString cannot yet take non-ascii data.

R=yangguo@chromium.org,
BUG=

Review URL: https://chromiumcodereview.appspot.com/11411005
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12972 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-15 13:31:27 +00:00
verwaest@chromium.org
a08194c83a Support all fast elements kinds in the major array operations. 
Currently missing support for unshift.

BUG=

Review URL: https://chromiumcodereview.appspot.com/11377132

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12969 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-15 12:19:14 +00:00
yangguo@chromium.org
7fc1751821 Make kAsciiDataHintTag have correct semantics for all both 1 and 2 byte string types. 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11360251
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12966 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-15 10:29:11 +00:00
jkummerow@chromium.org
1c086d1202 Lattice-based representation inference, powered by left/right specific type feedback for BinaryOps and comparisons 
Review URL: https://chromiumcodereview.appspot.com/10837165

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12961 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-14 15:59:45 +00:00
ulan@chromium.org
74492ab2d4 Emit VMLA for multiply-add on ARM 
Review URL: https://chromiumcodereview.appspot.com/11293061
Patch from Hans Wennborg <hans@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12958 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-14 11:01:18 +00:00
mmassi@chromium.org
ce682a2489 Allow property indexes to refer to slots inside the object header. 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11365221

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12944 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-13 11:07:04 +00:00
mvstanton@chromium.org
50bd6e9092 Revert change r12912 (http://code.google.com/p/v8/source/detail?r=12912) due to x64 perf issue 
R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11312206

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12943 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-13 10:53:34 +00:00
yangguo@chromium.org
827f8919f4 Reverting r12937. 
R=verwaest@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11293246

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12942 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-13 10:36:20 +00:00
yangguo@chromium.org
ce884e13e3 Make kAsciiDataHintTag have correct semantics for all both 1 and 2 byte string types. 
BUG=

Review URL: https://chromiumcodereview.appspot.com/11361171

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12937 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-12 14:57:59 +00:00
svenpanne@chromium.org
237684fa45 Refactoring: Make emit_debug_code flag handling architecture-independent. 
Review URL: https://codereview.chromium.org/11312165

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12921 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-09 13:43:48 +00:00
svenpanne@chromium.org
a28bc2fd97 Refactoring: Make predictable code flag handling architecture-independent. 
Review URL: https://codereview.chromium.org/11359127

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12920 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-09 13:10:10 +00:00
mvstanton@chromium.org
803d8eada1 Some improvements in register usage in lithium compilation of LoadKeyed/StoreKeyed operations. 
BUG=

Review URL: https://codereview.chromium.org/11365084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12912 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-09 10:21:07 +00:00
danno@chromium.org
bd4e114b8e Add code again to allow reclaiming old unexecuted functions. 
When code objects in the heap for FUNCTIONs and OPTIMIZED_FUNCTIONs are marked by the GC, their prologue is patched with a call to a stub that removes the patch. This allows the collector to quickly identify code objects that haven't been executed since the last full collection (they are the ones that sill contain the patch). The functionality is currently disabled, but can be activated by specifying the "--age-code".

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/10837037

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12898 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-08 12:18:11 +00:00
yangguo@chromium.org
943c10bb87 Rename kAsciiStringTag to kOneByteStringTag 
This is just a rename. After commit, I'll begin with the semantic changes.
Until those are complete, kOneByteStringTag will have the same meaning as
kAsciiStringTag.

BUG=

Review URL: https://chromiumcodereview.appspot.com/11293168
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12897 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-08 12:14:29 +00:00
mstarzinger@chromium.org
a31889e2de Fix slack tracking when instance prototype changes. 
This fixes a corner case when the instance prototype of a function is
changed while inobject slack tracking is still in progress. This caused
the intial map to be unrelated for functions with the same shared info
and hence the shared construct stub is no longer generic enough to work
for all those functions.

R=danno@chromium.org
BUG=chromium:157019
TEST=mjsunit/regress/regress-crbug-157019

Review URL: https://codereview.chromium.org/11293059

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12896 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-08 11:56:44 +00:00
danno@chromium.org
bbcfa17134 Use movw/movt on ARM to load constant roots 
BUG=none
TEST=none

Review URL: https://codereview.chromium.org/11307012
Patch from Jay Conrod <dconrod@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12895 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-08 10:32:39 +00:00
danno@chromium.org
63ada1da1b Move vldr in DoLoadKeyedFastDoubleElement before the hole check 
This reschedules instructions to better absorb VFP load latency.
BUG=none
TEST=none

Review URL: https://codereview.chromium.org/11363086
Patch from Rajeev Krithivasan <rkrithiv@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12890 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-07 21:38:46 +00:00
ulan@chromium.org
101d64c1a6 Simplify some of the startup code for SubStringStub::Generate. 
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11098043
Patch from JF Bastien <jfb@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12887 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-07 13:22:03 +00:00
ulan@chromium.org
f106c9c9f7 Add rotate-right instruction to hydrogen and use it instead of bitwise operations 
of the form ((x >>> i) | (x << (32 - i))).

This CL is based on https://chromiumcodereview.appspot.com/10984057/
by Jay Conrod <dconrod@codeaurora.org>.

R=danno@chromium.org,mstarzinger@chromium.org,dconrod@codeaurora.org

Review URL: https://chromiumcodereview.appspot.com/11033005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12855 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-05 13:28:10 +00:00
svenpanne@chromium.org
9de1d40d28 Improve handling of property loads on the proto chain. 
Previously Crankshaft emitted a generic load for these, now we emit a load of a
named field, guarded by a proto chain check.

LCheckPrototypeMaps now returns the holder, which is for free, because it
already had to check its map as the last step, anyway. This is in sync with what
StubCompiler::CheckPrototype does.

Review URL: https://codereview.chromium.org/11338030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12847 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-05 08:53:54 +00:00
mvstanton@chromium.org
a85fd03caa Consolidated all the key store/load classes in the Hydrogen and Lithium 
space into just two:
HLoadKeyed/HLoadKeyedGeneric and HStoreKeyed/HStoreKeyedGeneric
LLoadKeyed/LLoadKeyedGeneric and LStoreKeyed/LStoreKeyedGeneric
BUG=

Review URL: https://codereview.chromium.org/11238016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12839 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-11-02 09:18:53 +00:00
danno@chromium.org
5da0bbf390 Loosen aligned code target requirement on ARM 
Fixes crashes when V8 is built as Thumb code.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/11343014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12832 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-29 16:27:54 +00:00
danno@chromium.org
e96d49047b Remove redundant jump to deoptimization (the jump already exists in DoCheckMapCommon) 
BUG=none
TEST=none

Review URL: https://codereview.chromium.org/11265044
Patch from Rajeev Krithivasan <rkrithiv@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12828 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-29 11:45:40 +00:00
ulan@chromium.org
d247c5e6c7 Change constant pool marker to be the unconditional, permanently undefined instruction. 
The previously-used instruction isn't guaranteed to always be undefined,
and the encoding used was conditional (failing the condition on an
undefined instruction is itself undefined and not guaranteed to
fault!). I would have like to use a more clever encoding (see bug 2963),
but we need the extra bits to encode the size of the constant pool.

BUG=security
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11242002
Patch from JF Bastien <jfb@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12791 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-22 15:25:17 +00:00
ulan@chromium.org
18ff15ca8c Speed up function deoptimization by avoiding quadratic pass over optimized function list. 
R=danno@chromium.org
BUG=155270

Review URL: https://chromiumcodereview.appspot.com/11189091

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12780 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-22 09:48:56 +00:00
verwaest@chromium.org
c9e86f4b69 Remove scratch register requirement from LoadInstanceDescriptors on arm and mips. 
Review URL: https://chromiumcodereview.appspot.com/11193022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12776 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-19 12:39:59 +00:00
danno@chromium.org
ace5bf3f94 Fix ARM dissambler test problems with movw/movt. 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/11198061

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12771 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-19 10:44:56 +00:00
danno@chromium.org
4431e0c54e Put more constants in movw/movt instructions 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/11185052

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12759 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-18 14:37:04 +00:00
danno@chromium.org
43e248d2e5 Use movw/movt instead of constant pool on ARMv7. 
Some ARM architectures load 32-bit immediate constants more efficiently using movw/movt pairs rather than constant pool loads. This patch allows the assembler to generate one or the other load form at runtime depending on what is faster.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/11037023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12755 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-18 12:21:42 +00:00
verwaest@chromium.org
72424b3987 Move DescriptorArray into the map. 
Review URL: https://chromiumcodereview.appspot.com/11188031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12746 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-17 13:04:49 +00:00
ulan@chromium.org
a86e897924 Simulate and disasm NOP on ARM 
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11116011
Patch from JF Bastien <jfb@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12737 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-15 15:42:09 +00:00
ulan@chromium.org
86eedc26b5 Allow unaligned accesses for ARMv7. 
R=mstarzinger@chromium.org,jfb@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11087047

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12735 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-15 15:19:36 +00:00
svenpanne@chromium.org
5a0176222b Consistently make the bounds check for AccessArgumentsAt explicit. 
This has the advantage that AccessArgumentsAt itself can't deopt anymore and the
bounds check is visible for the elimination phase. Furthermore, things are
simply more consistent now, a good thing in itself. :-)

Review URL: https://codereview.chromium.org/11106012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12721 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-15 07:25:20 +00:00
danno@chromium.org
bf83c5fe32 Use immediate add when possible in space allocator 
Save one instruction in allocating new space by using an immediate add if
possible to calculate the new top of heap.

BUG=

Review URL: https://chromiumcodereview.appspot.com/11091068
Patch from Anthony Berent <aberent@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12718 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-12 14:06:03 +00:00
svenpanne@chromium.org
1f3bdabd80 Ensure that we do not accidentally emit debug code. 
The call sites are more concise, the naming is better and at least one
case of superfluous code in release mode was removed.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/11108011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12712 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-12 11:09:14 +00:00
danno@chromium.org
0457a3be0a DoNumberTagD performance improvement 
Allocate heap entry untagged and tag at end to avoid having to subtract off
the tag offset before storing the value.

BUG=

Review URL: https://codereview.chromium.org/11028115
Patch from Anthony Berent <aberent@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12711 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-12 10:58:25 +00:00
ulan@chromium.org
ede725d2f7 Fix vstr.cc S, [mem] to emit vstr instead of vldr. 
BUG=emits wrong instruction
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11118015
Patch from JF Bastien <jfb@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2012-10-12 09:27:12 +00:00