Make the strict-mode calling convention for contextual calls the default one.

Make the strict-mode calling convention for contextual calls the default one.

BUG=
R=dcarney@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=18581

[Toon Verwaest, 2014-01-13 17:45:55]

dcarney@ PTAL
rossberg@ FYI

[dcarney, 2014-01-13 18:35:02]

https://codereview.chromium.org/131663003/diff/330001/src/hydrogen.cc
File src/hydrogen.cc (right):

https://codereview.chromium.org/131663003/diff/330001/src/hydrogen.cc#newcode...
src/hydrogen.cc:7798: if (shared->is_classic_mode() && !shared->native()) {
not really for this patch maybe, but:

is_classic_mode && !native

is used so much it should really be a function on shared
it would also allow us to find all these places much more easier

https://codereview.chromium.org/131663003/diff/330001/src/hydrogen.cc#newcode...
src/hydrogen.cc:7860: if (shared->is_classic_mode() && !shared->native()) {
this block is identical to the above except for the pushes  -- extract into a
function returning the receiver

https://codereview.chromium.org/131663003/diff/330001/src/ia32/code-stubs-ia3...
File src/ia32/code-stubs-ia32.cc (right):

https://codereview.chromium.org/131663003/diff/330001/src/ia32/code-stubs-ia3...
src/ia32/code-stubs-ia32.cc:2529: if (ReceiverMightBeImplicit()) {
can remove conditional

https://codereview.chromium.org/131663003/diff/330001/src/ia32/code-stubs-ia3...
src/ia32/code-stubs-ia32.cc:2534: __ cmp(eax,
isolate->factory()->the_hole_value());
can we just pass undefined in these cases and remove this entirely as well as
the ReceiverMightBeImplicit check below

https://codereview.chromium.org/131663003/diff/330001/src/v8globals.h
File src/v8globals.h (right):

https://codereview.chromium.org/131663003/diff/330001/src/v8globals.h#newcode295
src/v8globals.h:295: RECEIVER_MIGHT_BE_IMPLICIT = 1 << 0,
can this be removed?

also, can CALL_AS_METHOD be removed

https://codereview.chromium.org/131663003/diff/330001/test/mjsunit/function-c...
File test/mjsunit/function-call.js (right):

https://codereview.chromium.org/131663003/diff/330001/test/mjsunit/function-c...
test/mjsunit/function-call.js:171: print(i);
debuggage

[dcarney, 2014-01-14 10:27:50]

lgtm

[dcarney, 2014-01-14 11:56:53]

lgtm, again

[Toon Verwaest, 2014-01-14 12:05:06]

Committed patchset #6 manually as r18581 (presubmit successful).