Register renaming in block-based instruction set architecture

A method for executing a read instruction on a multi-core processor, the method comprising:

• referencing an intra-core register rename map, of a first block of instructions, to determine if a physical register, of a first core of the multi-core processor, is a location of a most recent write to an architectural register that has been executed by the first core, the most recent write being according to a program order;
• and
• referencing an inter-core register rename map, of the first core, to determine if a second core, of the multi-core processor, includes a physical register that is the location of the most recent write to the architectural register that has been executed by the second core, is executing on the second core, or is expected to execute on the second core;
• and
• reading a value from the physical register of the second core in response to the second core including the physical register that is the location of the most recent write to the architectural register.

A method for executing a write instruction on a block-based processor core, the method comprising:

• writing a value to a physical register, of the block-based processor core, that corresponds to an architectural register, the write instruction being an instruction of a first block of instructions;
• determining a second block of instructions that includes a subsequent write instruction for the architectural register;
• determining an intermediate block of instructions between the first block of instructions and the second block of instructions;
• recording an identification of the physical register in a first field of a record of an intra-core register rename map associated with the intermediate block of instructions;
• and
• setting a value of a second field of the record to indicate that the physical register is a location of a most recent write to the architectural register that has been executed by the block-based processor core, the most recent write being according to a program order.