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  1. 05 Apr, 2016 1 commit
    • mlippautz's avatar
      [heap] Non-contiguous young generation · 3f921372
      mlippautz authored 
      This change removes the large contiguous backing store from the young generation
and replaces it regular pages.

We keep a pool of pages that are committed/uncommitted to avoid creating virtual
memory maps during growing and shrinking.

BUG=chromium:581412
LOG=N

Review URL: https://codereview.chromium.org/1853783002

Cr-Commit-Position: refs/heads/master@{#35261}
      3f921372
  3. 01 Apr, 2016 2 commits
  5. 31 Mar, 2016 1 commit
  7. 29 Mar, 2016 2 commits
    • jacob.bramley's avatar
      [arm] Correctly detect ARMv8 platforms with old kernels. · 4ee76daf
      jacob.bramley authored 
      AArch64 kernels older than 3.18 presented a different cpuinfo format
than what V8 expects. Most of V8's logic still works, but it misreads
the "CPU architecture" field.

BUG=

Review URL: https://codereview.chromium.org/1841733002

Cr-Commit-Position: refs/heads/master@{#35114}
      4ee76daf
    • jarin's avatar
      Linux perf integration with the new support for JIT. · 82e95f59
      jarin authored 
      Difference from --perf-basic-prof:
- correctly attributes samples when code space gets reused (when unused code object dies and a new code objects is allocated at the same place).
- outputs compiled machine code for instruction-level profile.

Just like --perf-basic-prof, the file writer is not synchronized (even worse, there is a per-isolate file handle), so we will run into trouble with multiple isolates. However, this patch is still an improvement on --perf-basic-prof, and it should be fine to replace ll-prof.

The patch also introduces experimental support for debug info, but it does not seem to be picked by the perf tool.

Usage:

You need the perf tool from Linux kernel >4.5. Then run:

$ perf record -k mono d8 --perf-prof <your JS file>
$ perf inject -j -i perf.data -o perf.data.jitted
$ perf report -i perf.data.jitted

Some explanations:
The "-k mono" switch from "perf record" tells the perf tool to use the monotonic clock for perf sample timestamping. The "perf inject -j" command injects the collected code events into the perf data file, writing the output into perf.data.jitted. The perf report command then creates the report.

Review URL: https://codereview.chromium.org/1809203007

Cr-Commit-Position: refs/heads/master@{#35091}
      82e95f59
  9. 21 Mar, 2016 1 commit
    • jfb's avatar
      wasm: add flag to dump modules · ed76b66a
      jfb authored 
      Flags --dump_wasm_module and --dump_wasm_module_path=/path/to/folder allow us to run a bunch of tests and capture all of the wasm module files including the ones that come from the .js and .cc tests which are built on the fly, as well as the asm2wasm tests.

The files are all uniquely named `HASH.{ok,failed}.wasm`.

This will be especilly useful for fuzz testing, but could also be used for other tests including non-V8 tests.

For now I manually hacked tools/testrunner/local/execution.py so that tools/run-tests.py can output the modules. We may want to ad a flag to run-tests.py proper if this turns out to be useful.

R=bradnelson@chromium.org, titzer@chromium.org, kcc@chromium.org

Review URL: https://codereview.chromium.org/1816583003

Cr-Commit-Position: refs/heads/master@{#34968}
      ed76b66a
  11. 16 Mar, 2016 3 commits
  13. 15 Mar, 2016 1 commit
  15. 11 Mar, 2016 2 commits
  17. 10 Mar, 2016 1 commit
    • joransiu's avatar
      S390: Platform specific includes in common files · daea0e75
      joransiu authored 
      Add S390 platform specific \#includes across various common files.
Add S390 CPU features to enum.
Add S390 implementation to extract sp/fp/pc from signal context.

R=danno@chromium.org,jkummerow@chromium.org,jochen@chromium.org,jyan@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1777593003

Cr-Commit-Position: refs/heads/master@{#34674}
      daea0e75
  19. 01 Mar, 2016 1 commit
    • littledan's avatar
      Make RUNTIME_ASSERT have more useful output in debug mode · 78d84530
      littledan authored 
      Runtime asserts are were previously a bit annoying to debug, due to
the lack of a useful error message, even in debug mode. This patch
prints out some more information in debug mode for runtime assert
failures while preserving their exception-throwing semantics. While
we're at it, it requires a semicolon after RUNTIME_ASSERT macro
invocations.

```
$ rlwrap out/Debug/d8 --allow-natives-syntax
V8 version 5.1.0 (candidate)
d8> %ArrayBufferNeuter(1)

#
# Runtime error in ../../src/runtime/runtime-typedarray.cc, line 52
#
# args[0]->IsJSArrayBuffer()

==== C stack trace ===============================

 1: 0xf70ab5
 2: 0xadeebf
 3: 0xadedd4
 4: 0x2ef17630693b
(d8):1: illegal access
%ArrayBufferNeuter(1)
^

d8>
```

Also give the other 'illegal access' case (a special SyntaxError type) a more
descriptive error message for its sole usage.

R=adamk

Review URL: https://codereview.chromium.org/1748183002

Cr-Commit-Position: refs/heads/master@{#34401}
      78d84530
  21. 29 Feb, 2016 1 commit
  23. 26 Feb, 2016 1 commit
    • joransiu's avatar
      S390: Initial impl of S390 asm, masm, code-stubs,... · 23cf6592
      joransiu authored 
      Initial commit with the bulk of the src/s390/* changes
along with associated changes to the build toolchain for
the new files.

A minor update to V8PRIuPTR definition for Mac OS X
affecting 32-bit S390 sim compilations.

R=danno@chromium.org,jkummerow@chromium.org,jochen@chromium.org,jyan@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1725243004

Cr-Commit-Position: refs/heads/master@{#34331}
      23cf6592
  25. 16 Feb, 2016 1 commit
  27. 01 Feb, 2016 1 commit
    • mbrandy's avatar
      Detect cache line size on Linux for PPC hosts. · c3ff68b6
      mbrandy authored 
      In the interest of generalization, this change:
- Consolidates cache line size detection for all interested
  architectures under base::CPU (currently leveraged by only
  PPC and ARM64).
- Differentiates between instruction vs data cache line sizes.

R=rmcilroy@chromium.org, jochen@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1643363002

Cr-Commit-Position: refs/heads/master@{#33642}
      c3ff68b6
  29. 26 Jan, 2016 1 commit
  31. 14 Jan, 2016 1 commit
    • joransiu's avatar
      S390: Makefile + Build Toolchain Updates · 1091c2f0
      joransiu authored 
      This is the first of several commits to contribute Linux on z Systems
(s390/s390x) port of V8.  We will be breaking up the changes into several
(hopefully) logical commits.

This commit contains the changes to V8 Makefile and build toolchains to
introduce S390 macros and compiler options.  Just for awareness for reviewers
is that s390 is 31-bit (not 32!) big-endian platform on Linux on z.  (MSB of address
is used to distinguish between 24-bit vs 31-bit addressing!)  s390x is
64-bit Linux on z.  Names follow the general linux convention on the platform.

A quick roadmap on upcoming commits:
- Add \#include of S390 header files in common files
- S390 related tests + tooling changes
- printf macro for printing size_t values.
- S390 platform-specific code generation code (bulk of changes!)

R=danno@chromium.org,svenpanne@chromium.org,michael_dawson@ca.ibm.com,jyan@ca.ibm.com,mtbrandyberry@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1585813002

Cr-Commit-Position: refs/heads/master@{#33304}
      1091c2f0
  33. 13 Jan, 2016 1 commit
  35. 24 Dec, 2015 1 commit
  37. 22 Dec, 2015 1 commit
  39. 03 Dec, 2015 1 commit
  41. 30 Nov, 2015 1 commit
  43. 25 Nov, 2015 2 commits
  45. 24 Nov, 2015 3 commits
  47. 09 Nov, 2015 1 commit
  49. 30 Oct, 2015 2 commits
  51. 20 Oct, 2015 1 commit
  53. 13 Oct, 2015 1 commit
  55. 09 Oct, 2015 1 commit
  57. 08 Oct, 2015 2 commits
  59. 07 Oct, 2015 1 commit