Intel Corporation

Xiaohua Shi

Guei-Yuan Lueh

Gansha Wu

Peng Guo

Jinzhan Peng

Zhiwei Ying

Type checking between an object class and a target class may comprise getting an object header from an object, and checking from the object header a result of a first time type checking between a class of the object and a target class specified by a hotspot in the first time type checking.

Type checking for object-oriented programming languages

Apparatus and methods for performing generational escape analysis in managed runtime environments are disclosed. The disclosed apparatus and methods determine the generational age of an equivalence class while performing escape analysis. Equivalence classes having generational ages are cloned if their generational ages are less than a threshold age.

Apparatus and methods for performing generational escape analysis in managed runtime environments

Methods and apparatuses provide for referencing thread local variables (TLVs) with techniques such as stack address mapping. A method may involve a head pointer that points to a set of thread local variables (TLVs) of a thread. A method according to one embodiment may include an operation for storing the head pointer in a global data structure in a user space of a processing system. The head pointer may subsequently be retrieved from the global data structure and used to access one or more TLVs associated with the thread. In one embodiment, the head pointer is retrieved without executing any kernel system calls. In an example embodiment, the head pointer is stored in a global array, and a stack address for the thread is used to derive an index into the array. Other embodiments are described and claimed.

Method and apparatus for referencing thread local variables with stack address mapping

An example apparatus and method described herein involves determining if a class object has been dynamically loaded, performing an escape analysis on the program code and determining if assumptions made during an initial escape analysis are valid. Additionally, the example apparatus and method restore synchronization to at least a portion of the program code affected by loading of the class object if the assumptions made during the initial escape analysis are no longer valid.

Apparatus and methods for restoring synchronization to object-oriented software applications in managed runtime environments

In one embodiment, the present invention includes a method for storing a method bundle in code which may include method metadata and a cookie indicator to indicate the presence of method information. After such storage, a query may be performed to search for the method bundle around a queried instruction pointer.

Storing method metadata in code

An arrangement is provided for improving the performance of a dynamic compiler, specifically for dynamically optimizing integer division operations. When a compiler receives an integer division code at runtime, the compiler dynamically profiles a divisor of the division code. The integer division code is then optimized based on the characteristics of the divisor, which are determined at runtime.

Dynamic division optimization for a just-in-time compiler

A system of permitting stack allocation in a program with open-world features is described. The system includes an escape analysis module to (1) determine which objects of the program can be stack-allocated under a closed-world assumption and (2) analyze, after stack allocation, which stack allocation is invalidated due to the occurrence of an open-world feature. A stack allocation module is provided to stack-allocate these objects based on the determination of the escape analysis module. A stack allocation recovery module is provided to recover those invalidated stack allocations back to their original allocation in heap based on the analysis of the escape analysis module. A method of permitting stack allocation in a program with open-world features is also described.

Method and system of permitting stack allocation to programs having open-world features

Methods for processing speech data are described herein. In one aspect of the invention, an exemplary method includes receiving a text sentence comprising a plurality of words, each of the plurality of words having a part of speech (POS) tag, generating a POS sequence based on the POS tag of each of the plurality of words, detecting a prosodic phrase break through a recurrent neural network (RNN), based on the POS sequence, and generating a prosodic phrases boundary based on the prosodic phrase break. Other methods and apparatuses are also described.

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Beijing, China

Xiaohua Shi