commit 594803c94671fa19db1420f2b43023b75264e101
author Benedikt Meurer <bmeurer@chromium.org> Tue Oct 17 12:11:47 2017
committer Commit Bot <commit-bot@chromium.org> Tue Oct 17 12:56:32 2017
tree 1aadcc365c821e5b9e6e6c2cffdc709016f0c593
parent 2b9a6d8908877a45f5a46eff0382b20d133acc22

[turbofan] Inline Function#bind in more cases.

So far the inlining of Function#bind into TurboFan optimized code was
limited to cases where TurboFan could infer the constant JSFunction that
was bound. However we can easily extend that to cover JSBoundFunction as
well, and obviously also take the LOAD_IC feedback if we don't have a
known JSFunction or JSBoundFunction.

This adds a new operator JSCreateBoundFunction that contains the logic
for the creation of the bound function object and the arguments.

On the micro-benchmarks we go from

  functionBindParameter0: 1239 ms.
  functionBindConstant0: 478 ms.
  functionBindBoundConstant0: 1256 ms.
  functionBindParameter1: 1278 ms.
  functionBindConstant1: 475 ms.
  functionBindBoundConstant1: 1253 ms.
  functionBindParameter2: 1431 ms.
  functionBindConstant2: 616 ms.
  functionBindBoundConstant2: 1437 ms.

to

  functionBindParameter0: 462 ms.
  functionBindConstant0: 485 ms.
  functionBindBoundConstant0: 474 ms.
  functionBindParameter1: 478 ms.
  functionBindConstant1: 474 ms.
  functionBindBoundConstant1: 474 ms.
  functionBindParameter2: 617 ms.
  functionBindConstant2: 614 ms.
  functionBindBoundConstant2: 616 ms.

which is a ~2.5x improvement. On the jshint benchmark in the
web-tooling-benchmark we observe a 2-3% improvement, which corresponds
to the time we had seen it running in the generic version.

Bug: v8:6936, v8:6946
Change-Id: I940d13220ff35ae602dbaa33349ba4bbe0c9a9d3
Reviewed-on: https://chromium-review.googlesource.com/723080
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48639}