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  1. 23 Apr, 2016 1 commit
    • mtrofin's avatar
      [turbofan] Single entry into deferred · 5ae587cf
      mtrofin authored 
      If a deferred block has multiple predecessors, they have to be
all deferred. Otherwise, we can run into a situation where if a range
that spills only in deferred blocks inserts its spill in the block, and
other ranges need moves inserted by ResolveControlFlow in the predecessors,
the register of the range spilled in the deferred block may be clobbered.

To avoid that, when a deferred block has multiple predecessors, and some
are not deferred, we add a non-deferred block to collect all such edges.

This CL addresses the validator assertion failure the referenced issue, as well
as the greedy allocator failure - which was caused by the situation described
above.

BUG=v8:4940
LOG=n

Review URL: https://codereview.chromium.org/1912093005

Cr-Commit-Position: refs/heads/master@{#35742}
      5ae587cf
  3. 23 Mar, 2016 1 commit
  5. 11 Jan, 2016 1 commit
  7. 05 May, 2015 1 commit
    • bmeurer's avatar
      [turbofan] Fix tail call optimization. · d21de2a4
      bmeurer authored 
      Tail calls are matched on the graph, with a dedicated tail call
optimization that is actually testable. The instruction selection can
still fall back to a regular if the platform constraints don't allow to
emit a tail call (i.e. the return locations of caller and callee differ
or the callee takes non-register parameters, which is a restriction that
will be removed in the future).

Also explicitly limit tail call optimization to stubs for now and drop
the global flag.

BUG=v8:4076
LOG=n

Review URL: https://codereview.chromium.org/1114163005

Cr-Commit-Position: refs/heads/master@{#28219}
      d21de2a4
  9. 20 Apr, 2015 1 commit
  11. 04 Mar, 2015 1 commit
  13. 25 Feb, 2015 1 commit
  15. 20 Feb, 2015 1 commit
  17. 17 Feb, 2015 1 commit
    • bmeurer's avatar
      [turbofan] Optimize certain chains of Branch into a Switch. · acd9c46c
      bmeurer authored 
      This adds a new ControlFlowOptimizer that - for now - recognizes chains
of Branches generated by the SwitchBuilder for a subset of javascript
switches into Switch nodes. Those Switch nodes are then lowered to
either table or lookup switches.

Also rename Case to IfValue (and introduce IfDefault) for consistency.

BUG=v8:3872
LOG=n

Review URL: https://codereview.chromium.org/931623002

Cr-Commit-Position: refs/heads/master@{#26691}
      acd9c46c
  19. 09 Feb, 2015 1 commit
  21. 23 Jan, 2015 2 commits
  23. 22 Jan, 2015 1 commit
  25. 17 Dec, 2014 1 commit
  27. 26 Nov, 2014 3 commits
  29. 06 Nov, 2014 1 commit
  31. 05 Nov, 2014 1 commit
  33. 27 Oct, 2014 1 commit
  35. 24 Oct, 2014 1 commit
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  41. 14 Oct, 2014 2 commits
  43. 30 Sep, 2014 2 commits
  45. 29 Sep, 2014 1 commit
  47. 25 Sep, 2014 1 commit
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  51. 01 Sep, 2014 1 commit
  53. 26 Aug, 2014 2 commits
  55. 18 Aug, 2014 1 commit
  57. 04 Aug, 2014 1 commit
  59. 30 Jul, 2014 2 commits