- 02 Nov, 2016 1 commit
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jkummerow authored
Revert of [ic] Experiment: disable map-specific handler cache. (patchset #1 id:1 of https://codereview.chromium.org/2462973003/ ) Reason for revert: Causes performance regressions (up to 10% on the "IC" bucket). :-( Original issue's description: > [ic] Experiment: disable map-specific handler cache. > > IC data handlers support most of the hot cases nowdays. Let's see if > the map-specific code cache still help us to improve things. > > BUG=v8:5561 TBR=ishell@chromium.org # Not skipping CQ checks because original CL landed more than 1 days ago. BUG=v8:5561 Review-Url: https://codereview.chromium.org/2474653002 Cr-Commit-Position: refs/heads/master@{#40701}
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- 01 Nov, 2016 1 commit
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ishell authored
IC data handlers support most of the hot cases nowdays. Let's see if the map-specific code cache still help us to improve things. BUG=v8:5561 Review-Url: https://codereview.chromium.org/2462973003 Cr-Commit-Position: refs/heads/master@{#40685}
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- 01 Sep, 2016 1 commit
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marja authored
Rebuilding (after touching certain files) is crazy slow because includes are out of control. Many of these files we need to rebuild are cctests which pull in more includes than they need. BUG=v8:5294 Review-Url: https://codereview.chromium.org/2304553002 Cr-Commit-Position: refs/heads/master@{#39080}
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- 27 Jun, 2016 1 commit
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ssanfilippo authored
the .eh_frame format as part of the jitdump generated when FLAG_perf_prof is enabled. The final goal is allowing precise unwinding of callchains that include JITted code when profiling V8 using perf. Unwinding information is stored in the body of code objects after the code itself, prefixed with its length and aligned to a 8-byte boundary. A boolean flag in the header signals its presence, resulting in zero memory overhead when the generation of unwinding info is disabled or no such information was attached to the code object. A new jitdump record type (with id 4) is introduced for specifying optional unwinding information for code load records. The EhFrameHdr struct is also introduced, together with a constructor to initialise it from the associated code object. At this stage no unwinding information is written to the jitdump, but the infrastructure for doing so is ready in place. BUG=v8:4899 LOG=N Review-Url: https://codereview.chromium.org/1993653003 Cr-Commit-Position: refs/heads/master@{#37296}
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- 09 Jun, 2016 1 commit
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ishell authored
There are no ICs left that store their state in this field: vector based ICs use feedback vector and the rest three (BinaryOpIC, CompareIC and ToBooleanIC) reconstruct their state from the ExtraICState field. This CL also removes unused InlineCacheState::DEBUG_STUB which was used mostly in Code::is_debug_stub(). The latter now checks if the code is one of the debug builtins instead. BUG=chromium:618701 LOG=Y Review-Url: https://codereview.chromium.org/2052763003 Cr-Commit-Position: refs/heads/master@{#36871}
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- 02 Jun, 2016 1 commit
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jkummerow authored
Most maps have a small code cache (often only one entry), so this patch optimizes memory consumption of such cases by using plain FixedArrays, only switching to CodeCacheHashTables when the number of cached entries gets so large that linear-scan lookups get too slow. On loading inbox.google.com, this gets the aggregate size of all maps' code caches (there are about 13,600 of them) from 4300 KB to 970 KB. Review-Url: https://codereview.chromium.org/2021373002 Cr-Commit-Position: refs/heads/master@{#36681}
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