src/isolate-inl.h - Issue 8403037: Make C++ to JS transition faster by avoiding JavaScriptFrameIterator in SaveContext.

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Unified Diff: src/isolate-inl.h

Issue 8403037: Make C++ to JS transition faster by avoiding JavaScriptFrameIterator in SaveContext. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge

Patch Set: Created 9 years, 2 months ago

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Index: src/isolate-inl.h

diff --git a/src/isolate-inl.h b/src/isolate-inl.h

index d6e613176d7a71be593d9f796a3ca2716d9fe119..0a2c17404e63f20e97be4507b033aa2f49a0425f 100644

--- a/src/isolate-inl.h

+++ b/src/isolate-inl.h

@@ -45,9 +45,7 @@ SaveContext::SaveContext(Isolate* isolate) : prev_(isolate->save_context()) {

}

isolate->set_save_context(this);

- // If there is no JS frame under the current C frame, use the value 0.

- JavaScriptFrameIterator it(isolate);

- js_sp_ = it.done() ? 0 : it.frame()->sp();

+ c_entry_fp_ = isolate->c_entry_fp(isolate->thread_local_top());

}

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