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Message from discussion Make so that array length property access uses a new IC that tracks the array map. (issue 11344012)
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mma...@chromium.org  
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 More options Oct 29 2012, 10:47 am
From: mma...@chromium.org
Date: Mon, 29 Oct 2012 14:47:53 +0000
Local: Mon, Oct 29 2012 10:47 am
Subject: Make so that array length property access uses a new IC that tracks the array map. (issue 11344012)
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Reviewers: Jakob,

Message:
This patch looks pointless but its real purpose is to make so that in  
hydrogen
JSArrayLength in branches and JSArayLength used in bound checks look  
exactly the
same and can get the same GVN number.
This will enable proper array bounds check elimination in a following CL.

Description:
Make so that array length property access uses a new IC that tracks the  
array
map.

BUG=

Please review this at https://chromiumcodereview.appspot.com/11344012/

SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge

Affected files:
   M src/arm/stub-cache-arm.cc
   M src/ast.cc
   M src/hydrogen.cc
   M src/ia32/stub-cache-ia32.cc
   M src/ic.cc
   M src/objects-inl.h
   M src/objects.h
   M src/stub-cache.h
   M src/stub-cache.cc
   M src/type-info.h
   M src/type-info.cc
   M src/x64/stub-cache-x64.cc
   M test/mjsunit/array-length.js


 
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