Add source position recording for variable loads

Add source position recording for variable loads

This provides more precise source to generated code mapping as variable loads can be handled using IC calls.

R=kmillikin@chromium.org

BUG=v8:1527
TEST=test/message/regress/regress-1527

Committed: http://code.google.com/p/v8/source/detail?r=8610

[Kevin Millikin (Chromium), 2011-07-11 15:11:08]

LGTM with the small comments below.

http://codereview.chromium.org/7327038/diff/1/test/cctest/test-api.cc
File test/cctest/test-api.cc (right):

http://codereview.chromium.org/7327038/diff/1/test/cctest/test-api.cc#newcode...
test/cctest/test-api.cc:12639: // The last frame is an anonymous function which
have the initial eval call.
have => has

http://codereview.chromium.org/7327038/diff/1/test/cctest/test-api.cc#newcode...
test/cctest/test-api.cc:12658: // This is the source string inside the eval
which have the call to baz.
have => has, also just below.

http://codereview.chromium.org/7327038/diff/1/test/message/regress/regress-15...
File test/message/regress/regress-1527.out (right):

http://codereview.chromium.org/7327038/diff/1/test/message/regress/regress-15...
test/message/regress/regress-1527.out:1: # Copyright 2008 the V8 project
authors. All rights reserved.
Cut and paste a different copyright header :)

[Søren Thygesen Gjesse, 2011-07-11 15:19:16]

http://codereview.chromium.org/7327038/diff/1/test/cctest/test-api.cc
File test/cctest/test-api.cc (right):

http://codereview.chromium.org/7327038/diff/1/test/cctest/test-api.cc#newcode...
test/cctest/test-api.cc:12639: // The last frame is an anonymous function which
have the initial eval call.
On 2011/07/11 15:11:08, Kevin Millikin wrote:
> have => has

Done.

http://codereview.chromium.org/7327038/diff/1/test/cctest/test-api.cc#newcode...
test/cctest/test-api.cc:12658: // This is the source string inside the eval
which have the call to baz.
On 2011/07/11 15:11:08, Kevin Millikin wrote:
> have => has, also just below.

Done.

http://codereview.chromium.org/7327038/diff/1/test/message/regress/regress-15...
File test/message/regress/regress-1527.out (right):

http://codereview.chromium.org/7327038/diff/1/test/message/regress/regress-15...
test/message/regress/regress-1527.out:1: # Copyright 2008 the V8 project
authors. All rights reserved.
On 2011/07/11 15:11:08, Kevin Millikin wrote:
> Cut and paste a different copyright header :)

Done.