ee39a10e45a6a0880e8b829525c40d6055818560 |
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19-Sep-2013 |
Ian Rogers <irogers@google.com> |
Use class def index from java.lang.Class. Bug: 10244719 This removes the computation of the dex file index, when necessary this is computed by searching the dex file. Its only necessary in dalvik.system.DexFile.defineClassNative and DexFile::FindInClassPath, the latter not showing up significantly in profiling with this change. (cherry-picked from 8b2c0b9abc3f520495f4387ea040132ba85cae69) Change-Id: I20c73a3b17d86286428ab0fd21bc13f51f36c85c
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f6c4b3ba3825de1dbb3e747a68b809c6cc8eb4db |
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25-Aug-2013 |
Mathieu Chartier <mathieuc@google.com> |
New arena memory allocator. Before we were creating arenas for each method. The issue with doing this is that we needed to memset each memory allocation. This can be improved if you start out with arenas that contain all zeroed memory and recycle them for each method. When you give memory back to the arena pool you do a single memset to zero out all of the memory that you used. Always inlined the fast path of the allocation code. Removed the "zero" parameter since the new arena allocator always returns zeroed memory. Host dex2oat time on target oat apks (2 samples each). Before: real 1m11.958s user 4m34.020s sys 1m28.570s After: real 1m9.690s user 4m17.670s sys 1m23.960s Target device dex2oat samples (Mako, Thinkfree.apk): Without new arena allocator: 0m26.47s real 0m54.60s user 0m25.85s system 0m25.91s real 0m54.39s user 0m26.69s system 0m26.61s real 0m53.77s user 0m27.35s system 0m26.33s real 0m54.90s user 0m25.30s system 0m26.34s real 0m53.94s user 0m27.23s system With new arena allocator: 0m25.02s real 0m54.46s user 0m19.94s system 0m25.17s real 0m55.06s user 0m20.72s system 0m24.85s real 0m55.14s user 0m19.30s system 0m24.59s real 0m54.02s user 0m20.07s system 0m25.06s real 0m55.00s user 0m20.42s system Correctness of Thinkfree.apk.oat verified by diffing both of the oat files. Change-Id: I5ff7b85ffe86c57d3434294ca7a621a695bf57a9
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fe9ca4028f379688ecba6132ac3738171176b3e4 |
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21-Aug-2013 |
buzbee <buzbee@google.com> |
Compiler filter update Tweak of the compiler filter to give better results for applications which are not dominated by tight arithmetic loops. Deleted the "DeferCompilation" setting - it didn't differ enough from the "Space" setting. Added "Everything" setting to support forced compilation (for images and testing). Previously used "Speed" for that purpose, but in the speed setting there are some things we don't want to compile. Change-Id: Ia53b14f2044fc9738c1a4c1318f8204f2c25abe3
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9329e6d1a8ff8d3775c4a9db9a7bb97694bc267d |
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19-Aug-2013 |
buzbee <buzbee@google.com> |
More suspend check repair. The previous fix to the suspend check optimization mechanism left a bug in the handling of constant-folded branches. Change-Id: Ib71f1cb9f17203bee26746006e568d448666962d
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cbcfaf3a410e35730c4daeaff6c791665764925a |
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19-Aug-2013 |
buzbee <buzbee@google.com> |
Fix suspend check optimization Art's Quick compiler currently uses a convervative mechanism to ensure that a safe point will be reached within a "small" amount of time. Explicit suspend checks are placed prior to backwards branches and on returns. There are a lot of ways to optimize, which we'll get to in the future, but for now the only optimization is to detect a backwards branch that targets a return block. That's a common pattern in dex, and simple to detect. In those cases, we can suppress the suspend check on the backwards branch knowing that the return will do it. However, the notion of what is a backwards branch got a bit muddied with some mir optimizations that transform the graph by changing the sense of branches. What started off as a taken backwards branch may turn into a fallthrough backwards branch. This CL avoid the confusion by marking branches backwards based on their original dex targets rather than using the post-transform test of backwardness. Change-Id: I9b30be168c801af51bae7f66ecd442edcb115a18
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ee17e0aa4d24deb11c1766bfcc6a864519df1c1e |
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31-Jul-2013 |
buzbee <buzbee@google.com> |
Compilation filter This CL introduces a static compilation filter mechanism intended to allow us to reduce compilation time and space requirements until we have a profiling mechanism in place. It supports 5 modes of filtering: o interpret-only (compile nothing) o deferred-compilation (compile only those methods believe to be compute-intensive) o space (optimized for space) o balanced (best return on space investment) o speed (compile everything) A future CL will allow the default filtering mode to be set via system property. For now, you can pass it in via command line as follows: dalvikvm -compiler-filter:[interpret-only|defer-compilation| space|balanced|speed] or dex2oat --runtime-arg -compiler-filter:[one of the above modes] Creating a file named art/SMALL_ART will force the filter default to interpret-only. Later on we'll move this capability to a persistent system property. or modify kDefaultCompilerFilter in runtime.h It also changes the compiler driver to allow the compilers to decline to compile a method by return NULL. Change-Id: Ic73411818f8bb845a4a19a05b0395c50902c534f (cherry picked from commit a024a0686c3b0fea13f362bff70d65981e5febc5)
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a024a0686c3b0fea13f362bff70d65981e5febc5 |
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31-Jul-2013 |
buzbee <buzbee@google.com> |
Compilation filter This CL introduces a static compilation filter mechanism intended to allow us to reduce compilation time and space requirements until we have a profiling mechanism in place. It supports 5 modes of filtering: o interpret-only (compile nothing) o deferred-compilation (compile only those methods believe to be compute-intensive) o space (optimized for space) o balanced (best return on space investment) o speed (compile everything) A future CL will allow the default filtering mode to be set via system property. For now, you can pass it in via command line as follows: dalvikvm -compiler-filter:[interpret-only|defer-compilation| space|balanced|speed] or dex2oat --runtime-arg -compiler-filter:[one of the above modes] Creating a file named art/SMALL_ART will force the filter default to interpret-only. Later on we'll move this capability to a persistent system property. or modify kDefaultCompilerFilter in runtime.h It also changes the compiler driver to allow the compilers to decline to compile a method by return NULL. Change-Id: Ic73411818f8bb845a4a19a05b0395c50902c534f
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7934ac288acfb2552bb0b06ec1f61e5820d924a4 |
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26-Jul-2013 |
Brian Carlstrom <bdc@google.com> |
Fix cpplint whitespace/comments issues Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
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479f83c196d5a95e36196eac548dc6019e70a5be |
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19-Jul-2013 |
buzbee <buzbee@google.com> |
Dex compiler: re-enable method pattern matching The dex compiler's mechanism to detect simple methods and emit streamlined code was disabled during the last big restructuring (there was a question of how to make it useful for Portable as well as Quick). This CL does not address the Portable question, but turns the optimization back on for Quick. See b/9428200 Change-Id: I9f25b41219d7a243ec64efb18278e5a874766f4d
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6f485c62b9cfce3ab71020c646ab9f48d9d29d6d |
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19-Jul-2013 |
Brian Carlstrom <bdc@google.com> |
Fix cpplint whitespace/indent issues Change-Id: I7c1647f0c39e1e065ca5820f9b79998691ba40b1
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0cd7ec2dcd8d7ba30bf3ca420b40dac52849876c |
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18-Jul-2013 |
Brian Carlstrom <bdc@google.com> |
Fix cpplint whitespace/blank_line issues Change-Id: Ice937e95e23dd622c17054551d4ae4cebd0ef8a2
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2ce745c06271d5223d57dbf08117b20d5b60694a |
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18-Jul-2013 |
Brian Carlstrom <bdc@google.com> |
Fix cpplint whitespace/braces issues Change-Id: Ide80939faf8e8690d8842dde8133902ac725ed1a
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fc0e3219edc9a5bf81b166e82fd5db2796eb6a0d |
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17-Jul-2013 |
Brian Carlstrom <bdc@google.com> |
Fix multiple inclusion guards to match new pathnames Change-Id: Id7735be1d75bc315733b1773fba45c1deb8ace43
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7940e44f4517de5e2634a7e07d58d0fb26160513 |
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12-Jul-2013 |
Brian Carlstrom <bdc@google.com> |
Create separate Android.mk for main build targets The runtime, compiler, dex2oat, and oatdump now are in seperate trees to prevent dependency creep. They can now be individually built without rebuilding the rest of the art projects. dalvikvm and jdwpspy were already this way. Builds in the art directory should behave as before, building everything including tests. Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81
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