Commit Graph

5 Commits

Author SHA1 Message Date
jarin
bb2a830deb [turbofan] Make MachineType a pair of enums.
MachineType is now a class with two enum fields:
- MachineRepresentation
- MachineSemantic

Both enums are usable on their own, and this change switches some places from using MachineType to use just MachineRepresentation. Most notably:
- register allocator now uses just the representation.
- Phi and Select nodes only refer to representations.

Review URL: https://codereview.chromium.org/1513543003

Cr-Commit-Position: refs/heads/master@{#32738}
2015-12-10 09:03:53 +00:00
danno
c6d310da4d [turbofan]: Implement tail calls with more callee than caller parameters
* Adds a PrepareForTailCall instruction that bumps the stack in the case that
  the number of parameters passed to the callee causes the stack to exceed the
  calleer's frame size.
* Uses the gap resolver to move the saved caller return address and frame
  pointer to the approprate location in the tail-called frame.

BUG=v8:4076
LOG=n

Review URL: https://codereview.chromium.org/1455833004

Cr-Commit-Position: refs/heads/master@{#32151}
2015-11-20 15:04:30 +00:00
danno
ff283f7ded [turbofan] Better and more sane support for tail calls
* Limit triggering of tail calls to explicit use of a new inline runtime
  function %_TailCall. %_TailCall works just like %_Call except for using
  tail-calling mechanics (currently only in TF).
* Remove hack that recognized some specific usages of %_Call and converted them
  into tail calls.
* Support tail calls for all calls where the number of callee stack parameters
  is less than or equal to the number of caller stack parameters.
* Use the gap resolver to swizzle parameters and registers to tail calls.

BUG=v8:4076
LOG=n

Review URL: https://codereview.chromium.org/1439613003

Cr-Commit-Position: refs/heads/master@{#31987}
2015-11-13 16:08:30 +00:00
danno
3c9f69d399 [turbofan]: Add better encapsulation to LinkageLocation
Add factory methods for different types of LinkageLocations, and ensure that
accesses to the underlying data in the location are classified by type and
funneled through explicit accessors.

Also change the representation of LinkageLocation to use a BitField rather
than using a reserved section of the integer range.

Review URL: https://codereview.chromium.org/1262343002

Cr-Commit-Position: refs/heads/master@{#29938}
2015-07-30 14:52:30 +00:00
danno
d1a6dfaf4d [turbofan]: Fix tail calls edge cases and add tests
Review URL: https://codereview.chromium.org/1245523002

Cr-Commit-Position: refs/heads/master@{#29791}
2015-07-22 18:27:35 +00:00