Abstract: A digital computer system automatically creates an Instruction Set Architecture (ISA) that potentially exploits VLIW instructions, vector operations, fused operations, and specialized operations with the goal of increasing the performance of a set of applications while keeping hardware cost below a designer specified limit, or with the goal of minimizing hardware cost given a required level of performance.

Abstract: A computer is programmed to identify types of variables, in a computer program which includes a number of variables that are used without any explicit indication of their type, by repeatedly performing at least propagation of types from variables' definitions to variables' uses and removal of unreachable code. Repetition of type propagation from definitions to uses and removal of unreachable code is one aspect of the invention. The repetition can be terminated differently in different embodiments. In many embodiments, the repetition is performed until no unreachable code is found.

Abstract: A digital computer system automatically creates an Instruction Set Architecture (ISA) that potentially exploits VLIW instructions, vector operations, fused operations, and specialized operations with the goal of increasing the performance of a set of applications while keeping hardware cost below a designer specified limit, or with the goal of minimizing hardware cost given a required level of performance.

Abstract: In selecting and building a processor configuration, a user creates a new set of user-defined instructions, places them in a file directory, and invokes a tool that processes the user instructions and transforms them into a form usable by the software development tools. The user then invokes the software development tools, telling the tools to dynamically use the instructions created in the new directory. In this way, the user may customize a processor configuration by adding new instructions and within minutes, be able to evaluate that feature. The user is able to keep multiple sets of potential instructions and easily switch between them when evaluating their application.

Abstract: A digital computer system automatically creates an Instruction Set Architecture (ISA) that potentially exploits VLIW instructions, vector operations, fused operations, and specialized operations with the goal of increasing the performance of a set of applications while keeping hardware cost below a designer specified limit, or with the goal of minimizing hardware cost given a required level of performance.