Skip to content

V
V8
Switch branch/tag
  1. 24 Jul, 2018 1 commit
  3. 18 Jul, 2018 1 commit
    • Leszek Swirski's avatar
      [liveedit] Fix patching functions with start position zero · e8c5a51c
      Leszek Swirski authored 
      For a script '()=>42', the anonymous arrow function has both start and
end position the same as the script function itself. This causes issues
when sorting the SourcePositionEvents of the function, in two ways:

  * If the start positions are the same, we should order by *furthest*
    end position to ensure the stack is in the right order
  * If both start and end are the same, we need to order by function
    literal id to make sure that start order and end order are inversed.

Also, MapLiterals assumes that start+end position uniquely identifies a
function, which is false in this case, so we process the top-level
script function separately in MapLiterals.

Change-Id: I2b2185dc2825018b7ea44c7d0918238e9b1dd972
Reviewed-on: https://chromium-review.googlesource.com/1141741
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: 's avatarYang Guo <yangguo@chromium.org>
Reviewed-by: 's avatarAleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54525}
      e8c5a51c
  5. 06 Jul, 2018 2 commits
  7. 05 Jul, 2018 1 commit
  9. 03 Jul, 2018 3 commits
    • Alexey Kozyatinskiy's avatar
      Reland "[debug] liveedit in native" · 5505c664
      Alexey Kozyatinskiy authored 
      This is a reland of 3dfaf826

Original change's description:
> [debug] liveedit in native
>
> Liveedit step-by-step:
> 1. calculate diff between old source and new source,
> 2. map function literals from old source to new source,
> 3. create new script for new_source,
> 4. mark literals with changed code as changed, all others as unchanged,
> 5. check that for changed literals there are no:
>   - running generators in the heap,
>   - non droppable frames (e.g. running generator) above them on stack.
> 6. mark the bottom most frame with changed function as scheduled for
>    restart if any.
> 7. for unchanged functions:
>   - deoptimize,
>   - remove from cache,
>   - update source positions,
>   - move to new script,
>   - reset feedback information and preparsed scope information if any,
>   - replace any sfi in constant pool with changed one if any.
> 8. for changed functions:
>   - deoptimize
>   - remove from cache,
>   - reset feedback information,
>   - update all links from js functions to old shared with new one.
> 9. swap scripts.
>
> TBR=ulan@chromium.org
>
> Bug: v8:7862,v8:5713
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: I8f6f6156318cc82d6f36d7ebc1c9f7d5f3aa1461
> Reviewed-on: https://chromium-review.googlesource.com/1105493
> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54146}

TBR=dgozman@chromium.org

Bug: v8:7862, v8:5713
Change-Id: I163ed2fd2ca3115ba0de74cb35a6fac9e40fdd94
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/1124879
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: 's avatarAleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54187}
      5505c664
    • Yang Guo's avatar
      Revert "[debug] liveedit in native" · 22594d10
      Yang Guo authored 
      This reverts commit 3dfaf826.

Reason for revert: Failures - https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20gcc%204.8/20394

Original change's description:
> [debug] liveedit in native
> 
> Liveedit step-by-step:
> 1. calculate diff between old source and new source,
> 2. map function literals from old source to new source,
> 3. create new script for new_source,
> 4. mark literals with changed code as changed, all others as unchanged,
> 5. check that for changed literals there are no:
>   - running generators in the heap,
>   - non droppable frames (e.g. running generator) above them on stack.
> 6. mark the bottom most frame with changed function as scheduled for
>    restart if any.
> 7. for unchanged functions:
>   - deoptimize,
>   - remove from cache,
>   - update source positions,
>   - move to new script,
>   - reset feedback information and preparsed scope information if any,
>   - replace any sfi in constant pool with changed one if any.
> 8. for changed functions:
>   - deoptimize
>   - remove from cache,
>   - reset feedback information,
>   - update all links from js functions to old shared with new one.
> 9. swap scripts.
> 
> TBR=ulan@chromium.org
> 
> Bug: v8:7862,v8:5713
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: I8f6f6156318cc82d6f36d7ebc1c9f7d5f3aa1461
> Reviewed-on: https://chromium-review.googlesource.com/1105493
> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54146}

TBR=dgozman@chromium.org,ulan@chromium.org,yangguo@chromium.org,kozyatinskiy@chromium.org

Change-Id: I45df5b6f3abaf29e593c6ac11edefbd0177d0109
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7862, v8:5713
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/1124159Reviewed-by: 's avatarYang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54151}
      22594d10
    • Alexey Kozyatinskiy's avatar
      [debug] liveedit in native · 3dfaf826
      Alexey Kozyatinskiy authored 
      Liveedit step-by-step:
1. calculate diff between old source and new source,
2. map function literals from old source to new source,
3. create new script for new_source,
4. mark literals with changed code as changed, all others as unchanged,
5. check that for changed literals there are no:
  - running generators in the heap,
  - non droppable frames (e.g. running generator) above them on stack.
6. mark the bottom most frame with changed function as scheduled for
   restart if any.
7. for unchanged functions:
  - deoptimize,
  - remove from cache,
  - update source positions,
  - move to new script,
  - reset feedback information and preparsed scope information if any,
  - replace any sfi in constant pool with changed one if any.
8. for changed functions:
  - deoptimize
  - remove from cache,
  - reset feedback information,
  - update all links from js functions to old shared with new one.
9. swap scripts.

TBR=ulan@chromium.org

Bug: v8:7862,v8:5713
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I8f6f6156318cc82d6f36d7ebc1c9f7d5f3aa1461
Reviewed-on: https://chromium-review.googlesource.com/1105493Reviewed-by: 's avatarAleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: 's avatarDmitry Gozman <dgozman@chromium.org>
Reviewed-by: 's avatarYang Guo <yangguo@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54146}
      3dfaf826
  11. 22 Jun, 2018 1 commit
  13. 21 Jun, 2018 1 commit
  15. 20 Jun, 2018 1 commit
  17. 18 Jun, 2018 3 commits
  19. 15 Jun, 2018 3 commits
  21. 14 Jun, 2018 2 commits
  23. 07 Jun, 2018 1 commit
    • Leszek Swirski's avatar
      Revert "[sfi] Remove SFI function literal id field" · b6888b63
      Leszek Swirski authored 
      This reverts commit ceb9c812.

Reason for revert: Tanks compile time

Original change's description:
> [sfi] Remove SFI function literal id field
> 
> SharedFunctionInfos store their original function literal's id. This is
> also their index in the Script's SFI list.
> 
> Since the function literal id is only needed for lazy compilation and live
> edit, we can calculate it on-the-fly by linear search in the Script SFI list,
> and save a field on the SFI.
> 
> If this regresses compile performance, we could alternatively store the
> function literal id on the preparsed scope data as future work.
> 
> Bug: chromium:818642
> Change-Id: I5468cea0e115921f1c864d94e567d749a4349882
> Reviewed-on: https://chromium-review.googlesource.com/1082480
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#53523}

TBR=hpayer@chromium.org,leszeks@chromium.org,verwaest@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: chromium:818642
Bug: chromium:850417
Change-Id: If2fd21331b7062532c04004a51e705f7e9d0a151
Reviewed-on: https://chromium-review.googlesource.com/1090494Reviewed-by: 's avatarLeszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53573}
      b6888b63
  25. 05 Jun, 2018 1 commit
    • Leszek Swirski's avatar
      [sfi] Remove SFI function literal id field · ceb9c812
      Leszek Swirski authored 
      SharedFunctionInfos store their original function literal's id. This is
also their index in the Script's SFI list.

Since the function literal id is only needed for lazy compilation and live
edit, we can calculate it on-the-fly by linear search in the Script SFI list,
and save a field on the SFI.

If this regresses compile performance, we could alternatively store the
function literal id on the preparsed scope data as future work.

Bug: chromium:818642
Change-Id: I5468cea0e115921f1c864d94e567d749a4349882
Reviewed-on: https://chromium-review.googlesource.com/1082480
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: 's avatarHannes Payer <hpayer@chromium.org>
Reviewed-by: 's avatarToon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53523}
      ceb9c812
  27. 04 Jun, 2018 1 commit
  29. 03 Jun, 2018 1 commit
  31. 31 May, 2018 2 commits
  33. 29 May, 2018 1 commit
  35. 24 May, 2018 1 commit
    • Jaroslav Sevcik's avatar
      [generators] Store parameters in the generator object. · ea7499f5
      Jaroslav Sevcik authored 
      Currently, we context allocate all parameters for generators.

With this CL, we keep arguments on stack (unless they escape to inner
closure) and copy them between the stack and the generator's register
file on suspend/resume. This will save context allocation in most cases.

Note: There is an asymmetry between suspend and resume.
- Suspend copies arguments and registers to the generator.
- Resume copies only the registers from the generator, the arguments
  are copied by the ResumeGenerator trampoline.

Bug: v8:5164
Change-Id: I6333898c60abf461b1ab1b5c6d3dc7188fa95649
Reviewed-on: https://chromium-review.googlesource.com/1063712
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: 's avatarGeorg Neis <neis@chromium.org>
Reviewed-by: 's avatarBenedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53327}
      ea7499f5
  37. 09 May, 2018 1 commit
  39. 08 May, 2018 1 commit
  41. 07 May, 2018 1 commit
  43. 04 May, 2018 1 commit
  45. 03 May, 2018 2 commits
  47. 25 Apr, 2018 1 commit
  49. 20 Apr, 2018 1 commit
  51. 11 Apr, 2018 1 commit
  53. 10 Apr, 2018 1 commit
  55. 09 Apr, 2018 1 commit
  57. 06 Apr, 2018 2 commits