daf539e2f9
Fixes a couple problems with GC of unoptimized code.
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1. Instead of making a pass before the Marking phase,
this change does not visit code pointers in functions
during marking. Then after marking, if the code has
still not been marked, code pointers in functions
are nulled out.
2. Since code pointers in functions may be nulled out,
functions are no longer used as proxies for code in
deoptimization info.
R=iposva@google.com , srdjan@google.com
Review URL: https://codereview.chromium.org//70183010
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@30600 260f80e4-7a28-3924-810f-c04153c831b5
2013-11-23 00:17:28 +00:00
e375053d2f
Pattern match on generated code to find edge counters.
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In unoptimized code, use platform-specific pattern matching on generated
code to find edge counter arrays. Previously we searched pointer offsets,
but that does not work on platforms that encode the edge counters as indexes
into an object pool (i.e., x64, ARM, MIPS).
BUG=
R=fschneider@google.com , zra@google.com
Review URL: https://codereview.chromium.org//24744002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@28085 260f80e4-7a28-3924-810f-c04153c831b5
2013-10-01 10:22:47 +00:00
7d945c593a
Remove skip_static_calls_ as it uses an obsolete way to check for uncalled static calls. Will be replaced by ICData tracking.
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Add two different PCDescriptors to differentiate between optimized and unoptimized static calls (the former loads args. descr, the later loads ICData before calling).
Populate static call's ic_data field when optimizing.
R=asiva@google.com
Review URL: https://codereview.chromium.org//17723002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24433 260f80e4-7a28-3924-810f-c04153c831b5
2013-06-25 21:31:37 +00:00
fa7817bf79
Change static calls in unoptimized code to always call via a stub. Using ICData, the call count of static calls is collected as well.
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TODO: Use call frequency to guide inlining.
R=asiva@google.com , hausner@google.com , zra@google.com
Review URL: https://codereview.chromium.org//17554003
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24307 260f80e4-7a28-3924-810f-c04153c831b5
2013-06-21 23:35:10 +00:00
47de186e76
Store arguments descriptor in ICData. Remove loading of arguments descriptor at unoptimized call site (the ones using ICData).
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R=asiva@google.com , zra@google.com
Review URL: https://codereview.chromium.org//17421003
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24239 260f80e4-7a28-3924-810f-c04153c831b5
2013-06-20 16:29:39 +00:00
80c7ad1070
Implement breakpoint for closure calls
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Introduce a new PcDescriptor kind to distinguish closure calls from other runtime calls. The debugger can patch these calls to set a breakpoint. When stepping into a closure call, the debugger must fish out the closure object from the stack, find the function and set breakpoints in it.
Arm and Mips breakpoint stubs are not implemented yet. ia32 and x64 stubs tested by hand. Automated test to follow.
R=srdjan@google.com
Review URL: https://codereview.chromium.org//14858033
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@22596 260f80e4-7a28-3924-810f-c04153c831b5
2013-05-10 21:06:04 +00:00
8c44be4313
Add support for object pool that will be used on ARM and MIPS architectures.
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Modify code patching infrastructure to accept code object, which is necessary to
get to the object pool containing patchable target addresses.
Modify assembler test infrastructure to provide associated code object.
Review URL: https://codereview.chromium.org//12260026
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@18604 260f80e4-7a28-3924-810f-c04153c831b5
2013-02-15 23:55:31 +00:00
8c4e214722
Pass IC data and arguments descriptor to IC miss runtime functions.
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Before, we obtained them by pattern matching backwards on the machine
instructions at the call site. This previous approach becomes unwieldy when
we need to use to use multiple instance call patterns.
R=vegorov@google.com
BUG=
Review URL: https://codereview.chromium.org//11438017
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15737 260f80e4-7a28-3924-810f-c04153c831b5
2012-12-05 15:35:18 +00:00
7c6a68f2a4
Simplify CodePatcher::GetStaticCallAt.
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Review URL: https://codereview.chromium.org//11411072
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15101 260f80e4-7a28-3924-810f-c04153c831b5
2012-11-19 19:17:02 +00:00
67871d3098
Finish implementing lazy deoptimization (ia32, x64). Ran tests with --deoptimize-alot.
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Review URL: https://chromiumcodereview.appspot.com//10912146
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12093 260f80e4-7a28-3924-810f-c04153c831b5
2012-09-09 15:00:51 +00:00
64226e65ac
Share intrinsification framework across architectures, started on instrinsification in the new compiler x64.
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Review URL: https://chromiumcodereview.appspot.com//10035006
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@6661 260f80e4-7a28-3924-810f-c04153c831b5
2012-04-17 22:44:41 +00:00
1125846660
When checking against non-parametrized types use a cache to hold result tuples (class, result). That cache is stored in the instruction stream. Currently implemented for instanceof, ia32 only. Should migrate to other type tests and architectures.
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70x improvement on a benchmark (similar to what is seen in html _unwrap).
Review URL: https://chromiumcodereview.appspot.com//10010029
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@6281 260f80e4-7a28-3924-810f-c04153c831b5
2012-04-06 16:05:55 +00:00
a54f33bf92
ICData is now a wrapper object that refers to the calling function, target name, ic data array, etc. The old ICData C++ class that wrapped around an Array is removed. The advantage is that the ICData object remains the same, only its ic_data array object is being modified as classes are added..
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TODO: store ICData-s into function so that the type feedback can be easily extracted (currently must traverse the unoptimized code).
Review URL: https://chromiumcodereview.appspot.com//9395016
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@4417 260f80e4-7a28-3924-810f-c04153c831b5
2012-02-22 00:40:03 +00:00
b7cf1328a1
Very first steps for a debugger
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- Introduce Debugger class.
- Each isolate has a debugger object.
- Introduce stubs that can be put in place of static or dynamic
Dart function calls.
- Very rudimentary command line option to place a breakpoint
at the beginning of a function.
Review URL: http://codereview.chromium.org//8687037
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@1928 260f80e4-7a28-3924-810f-c04153c831b5
2011-11-30 17:04:45 +00:00
98ca000f01
Will be used by the debugger to find static calls in Dart code.
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Review URL: http://codereview.chromium.org//8588014
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@1621 260f80e4-7a28-3924-810f-c04153c831b5
2011-11-17 18:53:16 +00:00
5f43c05de7
Implement new inline cache. Delete a lot of unused code (most of change).
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Review URL: http://codereview.chromium.org//8379013
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@706 260f80e4-7a28-3924-810f-c04153c831b5
2011-10-25 18:35:49 +00:00
2ebcaea966
Code patching support and tests for new inline caches.
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Review URL: http://codereview.chromium.org//8351019
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@666 260f80e4-7a28-3924-810f-c04153c831b5
2011-10-24 23:42:47 +00:00
4c0f559d23
Initial checkin.
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git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15 260f80e4-7a28-3924-810f-c04153c831b5
2011-10-05 05:20:07 +00:00
zra@google.com