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  1. 01 Jun, 2015 1 commit
  3. 29 May, 2015 1 commit
  5. 08 May, 2015 1 commit
  7. 21 Apr, 2015 1 commit
  9. 08 Apr, 2015 1 commit
  11. 07 Apr, 2015 1 commit
    • bmeurer's avatar
      [x64] Match -0 - x with sign bit flip. · a1b2c275
      bmeurer authored 
      We can use xorps/xorpd on Intel CPUs to flip the sign bit. Ideally we'd
use a RIP-relative 128-bit constant in the code object, as OCaml/GCC
does, however that requires 128-bit alignment for code objects, which is
not yet implemented. So for now we materialize the mask inline.

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1046893002

Cr-Commit-Position: refs/heads/master@{#27611}
      a1b2c275
  13. 30 Mar, 2015 1 commit
    • bmeurer's avatar
      [turbofan] Add backend support for float32 operations. · 8dad78cd
      bmeurer authored 
      This adds the basics necessary to support float32 operations in TurboFan.
The actual functionality required to detect safe float32 operations will
be added based on this later. Therefore this does not affect production
code except for some cleanup/refactoring.

In detail, this patchset contains the following features:
- Add support for float32 operations to arm, arm64, ia32 and x64
  backends.
- Add float32 machine operators.
- Add support for float32 constants to simplified lowering.
- Handle float32 representation for phis in simplified lowering.

In addition, contains the following (related) cleanups:
- Fix/unify naming of backend instructions.
- Use AVX comparisons when available.
- Extend ArchOpcodeField to 9 bits (required for arm64).
- Refactor some code duplication in instruction selectors.

BUG=v8:3589
LOG=n
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1044793002

Cr-Commit-Position: refs/heads/master@{#27509}
      8dad78cd
  15. 10 Mar, 2015 1 commit
    • bmeurer's avatar
      [turbofan] Unify Math.floor / Math.ceil optimization. · 022ea7e0
      bmeurer authored 
      Provide an intrinsic %MathFloor / %_MathFloor that is used to optimize
both Math.ceil and Math.floor, and use the JS inlining mechanism to
inline Math.ceil into TurboFan code. Although we need to touch code
outside of TurboFan to make this work, this does not affect the way we
handle Math.ceil and/or Math.floor in CrankShaft, because for CrankShaft
the old-style builtin function id based inlining still kicks in first.

Once this solution is stabilized, we can use it for Math.floor as well.
And once that is settled, we can establish it as the unified way to
inline builtins, and get rid of the specialized builtin function id
based inlining at some point.

Note that "builtin" applies to basically every piece of internal
JavaScript/intrinsics based code, so this also applies to the yet to be
defined JavaScript based code stubs and handlers.

BUG=v8:3953
LOG=n
R=yangguo@chromium.org,svenpanne@chromium.org

Review URL: https://codereview.chromium.org/990963003

Cr-Commit-Position: refs/heads/master@{#27086}
      022ea7e0
  17. 05 Mar, 2015 1 commit
  19. 26 Feb, 2015 1 commit
  21. 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
  23. 09 Feb, 2015 1 commit
  25. 30 Jan, 2015 3 commits
  27. 21 Jan, 2015 1 commit
  29. 20 Dec, 2014 1 commit
  31. 19 Dec, 2014 1 commit
  33. 28 Nov, 2014 1 commit
  35. 12 Nov, 2014 1 commit
  37. 03 Nov, 2014 1 commit
  39. 30 Oct, 2014 2 commits
  41. 27 Oct, 2014 2 commits
  43. 23 Oct, 2014 1 commit
  45. 15 Oct, 2014 1 commit
  47. 14 Oct, 2014 1 commit
  49. 13 Oct, 2014 2 commits
  51. 01 Oct, 2014 2 commits
  53. 30 Sep, 2014 1 commit
  55. 25 Sep, 2014 1 commit
  57. 24 Sep, 2014 1 commit
  59. 22 Sep, 2014 1 commit
  61. 19 Sep, 2014 2 commits
  63. 10 Sep, 2014 1 commit
  65. 09 Sep, 2014 1 commit