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Author SHA1 Message Date
rodolph.perfetta@arm.com
40325916fd A64: tidy up the disassembler 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/171603020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 16:11:50 +00:00
plind44@gmail.com
a450b746db MIPS: Symbols for type cells. 
Port r19706 (81fd8dd)

Original commit message:
We can make more efficient code to check against type cells in the future if we use symbols, guaranteed not to conflict with user code. Currently, the "symbols" are the hole and undefined. Undefined may come in from the outside.

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/189143006

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19726 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 15:48:50 +00:00
alexandre.rames@arm.com
9bb39d0a1c A64: Clean and improve ArgumentsAdaptorTrampoline. 
This patch:
 - uses named registers
 - reserves all the stack space in one go to avoid operations on csp
 - uses LDP/STP to copy the arguments

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/184103003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19725 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 15:25:28 +00:00
alexandre.rames@arm.com
33a46be689 A64: Handle a few TODOs. 
Notes about a few TODOs handled in this patch:

* In ProfileEntryHookStub::Generate:
    Stubs are always called with relocation.

* In CreateArrayDispatchOneArgument:
    The branches to registers can't be conditional. We could use a jump table, but
    there are only 6 different kinds so it is likely not worth it.

* In Builtins::Generate_StringConstructCode:
    Rename the argc register (x0) after its meaning changes.
    Remove a TODO: using a macro would not make the code clearer.

* In Generate_JSEntryTrampolineHelper:
    Remove the TODO and raise an internal issue to investigate this.

* In Disassembler::SubstituteBranchTargetField:
    Print the target address, but we don't have more info on the target.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/185793002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19724 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 15:20:32 +00:00
yangguo@chromium.org
4f15fd2977 Reland "Introduce intrinsics for double values in Javascript." 
This relands r19704 with a fix to the test case.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/189823003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19723 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 14:58:41 +00:00
svenpanne@chromium.org
fa6d25a602 Revert "Handle non-power-of-2 divisors in division-like operations", "A64 tweaks for division-like operations." and "Windows build fix.". 
This reverts commit 19719, 19720 and 19721 because
mozilla/ecma/Date/15.9.3.1-1 fails (in release mode only?).

TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/189963005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19722 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 13:11:56 +00:00
svenpanne@chromium.org
5290867d76 Windows build fix. 
TBR=ulan@chromium.org

Review URL: https://codereview.chromium.org/189093009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19721 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 12:12:50 +00:00
svenpanne@chromium.org
726eadf4e7 A64 tweaks for division-like operations. 
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/190603003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19720 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 12:02:52 +00:00
svenpanne@chromium.org
94c450fcb9 Handle non-power-of-2 divisors in division-like operations 
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/190383002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 11:44:04 +00:00
yurys@chromium.org
49cd3d8a65 Allocation tracker: add separate entry for allocations via V8 API 
When object is creating via native V8 API calls JS callstack is empty and the allocation is indistinguishable from say compiler allocations. This change adds a separate entry for such allocations.

Since FunctionInfo not necessarily corresponds to a heap object they are now referred to using their index in the list of all FunctionInfos.

BUG=chromium:277984
LOG=N
R=loislo@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/177203002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19718 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 11:32:01 +00:00
ulan@chromium.org
06af80d42d Introduce Runtime_GetAllScopesDetails to get all scopes at once for a frame. 
This will reduce heavy ScopeIterator instantiations.
Once incorporated into chromium, will give 30% speed boost.

BUG=chromium:340285
LOG=Y
R=ulan@chromium.org, Yang, rossberg, ulan

Review URL: https://codereview.chromium.org/181063008

Patch from Andrey Adaykin <aandrey@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19717 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 11:03:35 +00:00
mvstanton@chromium.org
f19e15c388 Test FeedbackVectorPreservedAcrossRecompiles needs crankshaft 
The new test didn't recognize that non-sse2 builds on ia32 would
disable crankshaft.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/189263007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19716 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 11:01:03 +00:00
svenpanne@chromium.org
819315db4e Consistenly handle power-of-2 divisors in division-like operations 
Lithium currently supports 3 division-like operations on integral operands: "Normal" division (rounding towards zero), flooring division (rounding towards -Infinity) and modulus calculation (the counterpart for the "normal" division). For divisors which are a power of 2, one can efficiently use some bit fiddling to avoid the actual division for such operations. This CL cleanly splits off these operations into separate Lithium instructions, making the code much more maintainable and more consistent across platforms.

There are 2 basic variations of these bit fiddling algorithms: One involving branches and a seemingly more clever one without branches. Choosing between the two is not as easy as it seems: Benchmarks (and probably real-world) programs seem to favor positive dividends, registers and shifting units are sometimes scarce resources, and branch prediction is quite good in modern processors. Therefore only the "normal" division by a power of 2 is implemented in a branch-free manner, this seems to be the best approach in practice. If this turns out to be wrong, we can easily and locally change this.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/175143002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19715 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 10:36:28 +00:00
ulan@chromium.org
a1e59cca73 Reduce heavy runtime calls from debug mirrors. 
Cache results of some heavy calls into C++.
This alone will boost the speed up to 18% on some real world scenarios.

BUG=chromium:340285
LOG=Y
R=ulan@chromium.org, yangguo@chromium.org, Yang, rossberg, ulan, yurys

Review URL: https://codereview.chromium.org/184483004

Patch from Andrey Adaykin <aandrey@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19714 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 10:25:53 +00:00
bmeurer@chromium.org
137249916f Track global cells as special side effects in GVN. 
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/188543004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19713 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 10:14:03 +00:00
mvstanton@chromium.org
1812f63fd2 Moved type feedback vector to SharedFunctionInfo. 
Type Vector followup: the type vector currently lives off the code object. This CL moves it to the SharedFunctionInfo, facilitating re-use and continued use in crankshafted code if desired.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/178463007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19712 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 10:12:17 +00:00
ulan@chromium.org
31f67939cb Check and clear date cache in DateCurrentTime, DateLocalTimezone and getTimezoneOffset. 
BUG=142141
LOG=Y
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/173793002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19711 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 10:01:00 +00:00
yangguo@chromium.org
143902bebf Revert "Introduce intrinsics for double values in Javascript." 
This reverts r19704.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/189533008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 09:49:28 +00:00
verwaest@chromium.org
8a3d715250 Revert "Use Representation::Integer32() for smi types on 32-bit-tagged systems." 
Due to performance regression.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/189843006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19709 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 09:29:07 +00:00
baptiste.afsa@arm.com
a1102885e0 A64: Minor improvement in FullCodeGenerator::VisitObjectLiteral. 
This patch avoid to push some values on the stack when it's not needed.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/183193005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19708 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 09:19:51 +00:00
mstarzinger@chromium.org
42169bf3df Update .gitignore to new test262 package name. 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/188923003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19707 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 09:19:48 +00:00
mvstanton@chromium.org
1d3652ebe6 Symbols for type cells. We can make more efficient code to check against type cells in the future if we use symbols, guaranteed not to conflict with user code. Currently, the "symbols" are the hole and undefined. Undefined may come in from the outside. 
BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/181283003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19706 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 09:10:18 +00:00
baptiste.afsa@arm.com
67265201e2 A64: Tidy up some TODOs in GenerateRecordCallTarget. 
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/184433002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19705 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 09:06:24 +00:00
yangguo@chromium.org
2aefde4443 Introduce intrinsics for double values in Javascript. 
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/178583006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 09:05:10 +00:00
yangguo@chromium.org
8472e0f02b Remove duplicates in runtime macros. 
Each item in INLINE_RUNTIME_FUNCTION_LIST had to have a duplicate
entry in RUNTIME_FUNCTION_LIST in order to match the comment.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/177313005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19703 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 08:49:02 +00:00
marja@chromium.org
bd1fb97d5c Remove Script::SetData and the script_data parameter from Script::(Compile|New). 
This feature makes it possible to associate data with a script and get it back
when the script is compiled or when an event is handled. It was historically
used by Chromium Dev Tools, but not any more. It is not used by node.js.

Note: this has nothing to do with the preparse data, despite the confusing name.
The preparse data is passed as ScriptData*.

Note 2: This is the same as r19616 ( https://codereview.chromium.org/184403002/ )
with a unused variable fix in bootstrapper.cc.

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/185533014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19702 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 08:43:54 +00:00
yangguo@chromium.org
2454b8e74d Harmony: move implementation of Math.log1p and Math.expm1 to Javascript. 
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/179533003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19701 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 08:42:10 +00:00
bmeurer@chromium.org
c6bfbace87 ia32: Simplify inlined Smi code for SAR. 
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/188483002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19700 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 08:36:53 +00:00
yangguo@chromium.org
ea8368f471 Use fast path for sliced and external strings in ConvertCase. 
R=dcarney@chromium.org
BUG=v8:3180
LOG=N

Review URL: https://codereview.chromium.org/180063002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19699 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 08:36:18 +00:00
bmeurer@chromium.org
a4d3fbdc8f Optimistically untag the input in tagged-to-i. 
Also drop redundant jmp instruction in deferred code.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/182723003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19698 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-07 08:36:13 +00:00
jkummerow@chromium.org
10757a7e0d Prepare push to trunk. Now working on version 3.25.6. 
R=titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/186593005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19695 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 17:42:58 +00:00
ishell@chromium.org
997ce05289 Fix for failing asserts in HBoundsCheck code generation on x64: use proper cmp operation width instead of asserting that Integer32 values should be zero extended. Similar to chromium:345820. 
BUG=349465
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/188703002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19694 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 16:22:47 +00:00
jkummerow@chromium.org
1cc0bafc07 Fix HConstants with Smi-ranged HeapNumber values 
BUG=chromium:349878
LOG=y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/186123003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19693 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 16:21:09 +00:00
ulan@chromium.org
5af7d10af5 Mark mjsunit/whitespaces as slow and timeout for a64. 
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/182253008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19692 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 14:15:40 +00:00
mvstanton@chromium.org
6115a006fd Bugfix for 349874: we incorrectly believe we saw a growing store 
When we set an out of bounds array index, the index might be so large that
it causes the array to go to dictionary mode. It's better to avoid
"learning" that this was a growing store in that case.

This fix also partially reverts a fix for bug 347543, as this fix is
comprehensive and satisfies that repro case as well (partial revert of
v19591).

BUG=349874
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/188643002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19691 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 13:07:51 +00:00
verwaest@chromium.org
cd6f3ef088 Only use the non-strict-arguments-stub if the store site is non-strict. 
BUG=349874
LOG=N
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/176843018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19690 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 12:19:06 +00:00
jkummerow@chromium.org
5ea3f0004a Let HTransitionElementsKind take part in RestoreActualValues phase 
BUG=chromium:349853
LOG=n
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/183753005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19689 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 12:13:49 +00:00
vegorov@chromium.org
1fc8ad9486 Fix VPrintHelper used on Windows. 
VPrintHelper would silently ignore the stream given to it if application is in GUI mode (no console is attached) and redirect output to the debugger via OutputDebugString.

Such redirection makes sense only if passed stream is either stderr or stdout. Don't redirect any other stream to the debugger.

Reorder clauses in VPrintHelper to make condition more readable.

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/177413006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19688 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 11:55:47 +00:00
yangguo@chromium.org
285f253af1 Remove outdated assertion scope. 
R=jkummerow@chromium.org
BUG=349870
LOG=N

Review URL: https://codereview.chromium.org/182003004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19687 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 11:51:53 +00:00
bmeurer@chromium.org
01ebd92a07 Add quickcheck targets for modes, builds and arches. 
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/181013014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19686 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 10:05:33 +00:00
yangguo@chromium.org
e2e2f4050d Fix issues with JSON stringify replacer array 
If the replacer array contains a property key we should include the
property even if the property is non enumerable or if it is a non own
property.

String and Number wrappers in the replacer array should be treated as
string and number values.

R=yangguo@chromium.org
BUG=v8:3200, v8:3201
LOG=Y

Review URL: https://codereview.chromium.org/187053003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19685 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 09:50:53 +00:00
verwaest@chromium.org
7bf33c53eb Use Representation::Integer32() for smi types on 32-bit-tagged systems. 
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/187353005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19684 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 09:49:10 +00:00
verwaest@chromium.org
f913c3b492 Also delete force representations that have no uses. 
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/187773002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19683 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-06 09:47:27 +00:00
titzer@chromium.org
14e81c8e1d Prepare push to trunk. Now working on version 3.25.5. 
R=hpayer@chromium.org
TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/187833002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19679 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-05 15:10:32 +00:00
hpayer@chromium.org
3f9d9ab8fd Ignore slots buffer overflow when recording entries of the allocation sites scratchpad. 
BUG=
R=mstarzinger@chromium.org, ulan@chromium.org

Review URL: https://codereview.chromium.org/181063033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19677 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-05 14:04:21 +00:00
jarin@chromium.org
52fd520c96 Fix materialization of captured objects in adapted arguments. 
R=mstarzinger@chromium.org
BUG=348512
LOG=N

Review URL: https://codereview.chromium.org/183063006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19676 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-05 12:57:18 +00:00
jarin@chromium.org
7ac668f753 Deoptimization fix for HPushArgument. 
HPushArgument should never be used in a simulation environment
because the slot addresses for the arguments can be off (e.g.,
due to on-stack arguments object of an inlined caller).

R=mstarzinger@chromium.org
BUG=v8:3183
LOG=N

Review URL: https://codereview.chromium.org/178193026

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19675 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-05 12:45:46 +00:00
yangguo@chromium.org
26e4f4cc1c Handle exception when retrieving toJSON function in JSON.stringify. 
R=mvstanton@chromium.org
BUG=349335
LOG=N

Review URL: https://codereview.chromium.org/187603002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19670 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-05 10:54:35 +00:00
rossberg@chromium.org
758a688bb6 Add --es-staging flag 
...and remove some obsolete ones.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/165723008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19669 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-05 10:07:07 +00:00
jkummerow@chromium.org
3df5573195 x64: Fix LMathMinMax for constant Smi right-hand operands 
BUG=chromium:349079
LOG=y
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/186593003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19668 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-03-05 09:49:07 +00:00