AuroraMiddleware/v8
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3 Commits

Author SHA1 Message Date
Z Nguyen-Huu
bf3202c8b8 Optimize hasOwnProperty for sealed, frozen objects. 
Extend CodeStubAssembler::TryLookupElement() to handle frozen/sealed elements.
Also add some tests.

~2x perf improvement in micro-benchmark ObjectFreeze
Before:
TaggedTemplate
TaggedTemplate-Numbers(Score): 2.43
HasOwnProperty
HasOwnProperty-Numbers(Score): 2.94

After:
TaggedTemplate
TaggedTemplate-Numbers(Score): 4.77
HasOwnProperty
HasOwnProperty-Numbers(Score): 4.68

Bug: v8:6831
Change-Id: I6ce057fd812cd6a01e627125a51eefa439710274
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1650633
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62096}
 2019-06-11 14:18:05 +00:00
christian.plesner.hansen@gmail.com
9bed566bdb Changed copyright header from google inc. to v8 project authors. 
Added presubmit step to check copyright.



git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-09-09 20:08:45 +00:00
christian.plesner.hansen
c42f5829a1 Included mjsunit JavaScript test suite and C++ unit tests. 
In the shell sample don't print the result of executing a script, only
evaluating expressions.

Fixed issue when building samples on Windows using a shared V8
library.  Added visibility option on Linux build which makes the
generated library 18% smaller.

Changed build system to accept multiple build modes in one build and
generate seperate objects, libraries and executables for each mode.

Removed deferred negation optimization (a * -b => -(a * b)) since this
visibly changes operand conversion order.

Improved parsing performance by introducing stack guard in preparsing.
Without a stack guard preparsing always bails out with stack overflow.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2008-08-22 13:33:59 +00:00