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  1. 26 Aug, 2015 2 commits
  3. 25 Aug, 2015 3 commits
    • hpayer's avatar
      Add basic support for parallel compaction and flag. · 9fc0a77b
      hpayer authored 
      BUG=524425
LOG=n

Review URL: https://codereview.chromium.org/1314903002

Cr-Commit-Position: refs/heads/master@{#30359}
      9fc0a77b
    • mtrofin's avatar
      [turbofan] Deferred blocks splintering. · 5d954d65
      mtrofin authored 
      This change encompasses what is necessary to enable stack checks in loops without suffering large regressions.

Primarily, it consists of a new mechanism for dealing with deferred blocks by "splintering", rather than splitting, inside deferred blocks.

My initial change was splitting along deferred block boundaries, but the regression introduced by stackchecks wasn't resolved conclusively. After investigation, it appears that just splitting ranges along cold block boundaries leads to a greater opportunity for moves on the hot path, hence the suboptimal outcome.

The alternative "splinters" ranges rather than splitting them. While splitting creates 2 ranges and links them (parent-child), in contrast, splintering creates a new independent range with no parent-child relation to the original. The original range appears as if it has a liveness hole in the place of the splintered one. All thus obtained ranges are then register allocated with no change to the register allocator.

The splinters (cold blocks) do not conflict with the hot path ranges, by construction. The hot path ones have less pressure to split, because we remove a source of conflicts. After allocation, we merge the splinters back to their original ranges and continue the pipeline. We leverage the previous changes made for deferred blocks (determining where to spill, for example).

Review URL: https://codereview.chromium.org/1305393003

Cr-Commit-Position: refs/heads/master@{#30357}
      5d954d65
    • rossberg's avatar
      Reship arrow functions · 98b56f0d
      rossberg authored 
      ...in canary.

This reverts commit c75af232.

R=hablich@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1319443002

Cr-Commit-Position: refs/heads/master@{#30346}
      98b56f0d
  5. 24 Aug, 2015 2 commits
  7. 21 Aug, 2015 1 commit
  9. 20 Aug, 2015 1 commit
    • domenic's avatar
      Add experimental, non-snapshotted V8 extras · 6f582f08
      domenic authored 
      Embedders would use these for features which must be able to be turned
off at runtime, despite being compiled into V8. They can be turned on
and off by the embedder using the --experimental_extras flag, e.g. via
v8::SetFlagsFromString.

R=yangguo@chromium.org, mlippautz@chromium.org, hpayer@chromium.org
BUG=chromium:507137
LOG=Y

Review URL: https://codereview.chromium.org/1284413002

Cr-Commit-Position: refs/heads/master@{#30260}
      6f582f08
  11. 18 Aug, 2015 2 commits
  13. 17 Aug, 2015 1 commit
  15. 14 Aug, 2015 1 commit
  17. 12 Aug, 2015 2 commits
    • littledan's avatar
      Stage sloppy classes · 9f9cb990
      littledan authored 
      This patch puts --harmony-sloppy into staging. Now that let, lexically-scoped
functions and ES2015 sloppy mode const semantics have been split off into
separate flags, the change only enables classes in sloppy mode.

BUG=v8:3305
R=adamk
LOG=Y

Review URL: https://codereview.chromium.org/1288153003

Cr-Commit-Position: refs/heads/master@{#30141}
      9f9cb990
    • littledan's avatar
      Split function block scoping into a separate flag · 1ebf0d7c
      littledan authored 
      In an initial attempt to implement sloppy mode lexical bindings,
functions were made lexically scoped in sloppy mode. However, the
ES2015 spec says that they need an additional hoisted var binding,
and further, it's not clear when we'll implement that behavior
or whether it's web-compatible.

This patch splits off function block scoping into a new, separate
flag called --harmony_sloppy_function. This change will enable the
possibility of testing and shipping this feature separately from
other block scoping-related features which don't have the same risks.

BUG=v8:4285
R=adamk
LOG=N

Review URL: https://codereview.chromium.org/1282093002

Cr-Commit-Position: refs/heads/master@{#30122}
      1ebf0d7c
  19. 11 Aug, 2015 1 commit
  21. 10 Aug, 2015 2 commits
  23. 05 Aug, 2015 3 commits
  25. 04 Aug, 2015 3 commits
  27. 30 Jul, 2015 1 commit
  29. 29 Jul, 2015 1 commit
  31. 28 Jul, 2015 1 commit
  33. 25 Jul, 2015 1 commit
    • littledan's avatar
      Split off a separate --harmony_sloppy_let flag · 2d2b72f6
      littledan authored 
      --harmony_sloppy includes behavior to turn on sloppy mode lexical
bindings. Before this patch, it also included a way to parse let
which is likely web-incompatible (let is disallowed as an
identifier). This patch splits off the let parsing from the more
general block scoping code, so that block scoping can be developed
independently.

R=adamk
LOG=N
BUG=v8:3305

Review URL: https://codereview.chromium.org/1255013002

Cr-Commit-Position: refs/heads/master@{#29855}
      2d2b72f6
  35. 24 Jul, 2015 2 commits
  37. 23 Jul, 2015 2 commits
  39. 22 Jul, 2015 1 commit
    • mstarzinger's avatar
      [turbofan] Preserve cached code across GCs. · 2c07b0d0
      mstarzinger authored 
      This preserves the context-independent entry in an optimized code map
across GCs when the code is considered young (i.e. less than 3 ages).
Note that any context-dependent entry for the same code will still be
flushed immediately when the respective context dies, hence context
lifetime is not increased.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1252463002

Cr-Commit-Position: refs/heads/master@{#29790}
      2c07b0d0
  41. 20 Jul, 2015 1 commit
  43. 17 Jul, 2015 1 commit
  45. 16 Jul, 2015 4 commits
  47. 15 Jul, 2015 1 commit
    • bbudge's avatar
      Expose SIMD.Float32x4 type to Javascript. · e5ed3bee
      bbudge authored 
      This CL exposes the constructor function, defines type related
information, and implements value type semantics.
It also refactors test/mjsunit/samevalue.js to test SameValue and SameValueZero.

TEST=test/mjsunit/harmony/simd.js, test/cctest/test-simd.cc

LOG=Y
BUG=v8:4124

Review URL: https://codereview.chromium.org/1219943002

Cr-Commit-Position: refs/heads/master@{#29689}
      e5ed3bee