e16dd13d6d
Introduce a new JSGlobalSpecialization advanced reducer that runs during the initial inlining and context specialization, and specializes the graph to the globals of the native context. Currently we assume that we do not inline cross native context, but long-term we will grab the global object from the JSLoadGlobal/JSStoreGlobal feedback (with the new global load/store ICs that are currently in the workings), and then this whole specialization will be fully compositional even across cross-context inlining. Note that we cannot really handle most of the stores to global object property cells because TurboFan doesn't have a mechanism to enforce certain representations. Also note that we cannot yet fully benefit from the type feedback collected on the global object property cells, because the type system cannot deal with maps in a reasonable way. CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_nosnap_rel R=jarin@chromium.org BUG=v8:4470 LOG=n Committed: https://crrev.com/6fbf7903f94924ea066af481719898bd9667b6eb Cr-Commit-Position: refs/heads/master@{#31139} Review URL: https://codereview.chromium.org/1387393002 Cr-Commit-Position: refs/heads/master@{#31148} |
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