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  1. 17 Aug, 2015 1 commit
  3. 12 Aug, 2015 1 commit
    • jfb's avatar
      Security: disable nontemporals. · a904b569
      jfb authored 
      The operations were available on ARM64 and x86-32 but were unused.

It has been conjectured that nontemporals can be used for rowhammer-like bitflips more easily than regular load/store operations. It is therefore desirable to avoid generating these instructions in the future.

R= titzer, jochen, jln, Mark Seaborn, ruiq

Review URL: https://codereview.chromium.org/1276113002

Cr-Commit-Position: refs/heads/master@{#30139}
      a904b569
  5. 11 May, 2015 1 commit
    • danno's avatar
      Add a MathFloor stub generated with TurboFan · abc35080
      danno authored 
      This stub will be used as the basis of a Math.floor-specific CallIC to
detect and track calls to floor that return -0.

Along the way:
- Create a TurboFanCodeStub super class from which the StringLength and
MathRound TF stubs derive.
- Fix the ugly hack that passes the first stub parameter as the "this"
pointer in the the TF-compiled JS function.
- Fix bugs in the ia32/x64 disassembler.

Review URL: https://codereview.chromium.org/1137703002

Cr-Commit-Position: refs/heads/master@{#28339}
      abc35080
  7. 11 Apr, 2015 1 commit
  9. 09 Apr, 2015 1 commit
  11. 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
  13. 12 Mar, 2015 1 commit
  15. 05 Mar, 2015 1 commit
  17. 06 Feb, 2015 1 commit
  19. 02 Dec, 2014 2 commits
  21. 17 Oct, 2014 1 commit
  23. 09 Oct, 2014 1 commit
  25. 06 Aug, 2014 1 commit
  27. 04 Aug, 2014 1 commit
  29. 30 Jul, 2014 1 commit
  31. 20 Jun, 2014 1 commit
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  35. 03 Jun, 2014 1 commit
  37. 29 Apr, 2014 1 commit
  39. 05 Mar, 2014 1 commit
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  43. 19 Feb, 2014 1 commit
  45. 09 Jan, 2014 1 commit
  47. 18 Nov, 2013 1 commit
  49. 06 Nov, 2013 1 commit
    • bmeurer@chromium.org's avatar
      Improve implementation of HSeqStringSetChar. · 980739a2
      bmeurer@chromium.org authored 
      This improves the generated code for HSeqStringSetChar across
all platforms, taking advantage of constant operands whenever
possible. It also drops the unused DefineSameAsFirst constraint
for the register allocator on x64 and ia32, where it caused
unnecessary spills when the string operand was live across the
HSeqStringSetChar instruction.

A new GVN flag StringChars is introduced to express dependencies
between HSeqStringSetChar, HStringCharCodeAt and the upcoming
HSeqStringGetChar (the GVNFlags type is now 64bit in size).

Also improves the test case.

TEST=mjsunit/string-natives
R=mstarzinger@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/57383004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17521 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      980739a2
  51. 05 Nov, 2013 1 commit
  53. 28 Oct, 2013 1 commit
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  63. 22 Aug, 2013 1 commit
  65. 05 Jul, 2013 1 commit
  67. 28 Jun, 2013 1 commit
  69. 21 Dec, 2012 1 commit
  71. 26 Nov, 2012 1 commit
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  75. 22 Aug, 2012 1 commit
  77. 06 Aug, 2012 1 commit