[turbofan] Optimize inlining and direct function calls.

[turbofan] Optimize inlining and direct function calls.

This adds optimized lowering for JSConvertReceiver (in the general case)
and JSToObject in typed lowering. It also uses JSConvertReceiver for
direct calls in typed lowering.

R=mstarzinger@chromium.org
BUG=v8:4493
LOG=n

Committed: https://crrev.com/47c0cb1d149182adcf1ec5792a1bd55c7d177e0b
Cr-Commit-Position: refs/heads/master@{#31676}

[Benedikt Meurer, 2015-10-30 09:17:35]

Hey Michi,

Here's the fastification for calls we talked about.
Please take a look.

Thanks,
Benedikt

[Michael Starzinger, 2015-10-30 09:55:01]

LGTM.

https://codereview.chromium.org/1431543002/diff/1/src/compiler/js-typed-lower...
File src/compiler/js-typed-lowering.cc (right):

https://codereview.chromium.org/1431543002/diff/1/src/compiler/js-typed-lower...
src/compiler/js-typed-lowering.cc:847: Reduction
JSTypedLowering::ReduceJSToObject(Node* node) {
nit: Can we haz unit test for ReduceJSToObject?

[Benedikt Meurer, 2015-10-30 10:00:49]

https://codereview.chromium.org/1431543002/diff/1/src/compiler/js-typed-lower...
File src/compiler/js-typed-lowering.cc (right):

https://codereview.chromium.org/1431543002/diff/1/src/compiler/js-typed-lower...
src/compiler/js-typed-lowering.cc:847: Reduction
JSTypedLowering::ReduceJSToObject(Node* node) {
Of course :-)

[Benedikt Meurer, 2015-10-30 10:00:52]

The CQ bit was checked by bmeurer@chromium.org

[Benedikt Meurer, 2015-10-30 10:00:52]

The patchset sent to the CQ was uploaded after l-g-t-m from
mstarzinger@chromium.org
Link to the patchset: https://codereview.chromium.org/1431543002/#ps20001
(title: "Add unittest.")

[commit-bot: I haz the power, 2015-10-30 10:01:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1431543002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1431543002/20001

[commit-bot: I haz the power, 2015-10-30 10:24:39]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-30 10:25:19]

Patchset 2 (id:??) landed as
https://crrev.com/47c0cb1d149182adcf1ec5792a1bd55c7d177e0b
Cr-Commit-Position: refs/heads/master@{#31676}