Memory write log storage processors, methods, systems, and instructions

A method performed by a processor comprising:

• receiving an instruction at the processor, the instruction indicating a destination memory address information corresponding to a start of a memory address log;
• beginning to log memory addresses to the memory address log, in response to the instruction, including storing memory addresses, for at least all initial writes to corresponding initial data items, to the memory address log, wherein the initial writes represent first writes to the initial data items occurring after the instruction in original program order and updating the corresponding initial data items to updated data items;
• and
• storing the initial data items, for said at least all initial writes, to a data item log, wherein the initial data items stored do not include the updates due to said at least all initial writes.

A system to process instructions comprising:

• an interconnect;
• a processor coupled with the interconnect, the processor to receive an instruction, the instruction to indicate a destination memory address information corresponding to a start of a memory address log, the processor, in response to the instruction, to begin to log memory addresses to the memory address log, including to store memory addresses, for only all initial writes to corresponding data items, to the memory address log, wherein said initial writes represent first writes in time to the corresponding data items that occur after the instruction in original program order;
• and
• a dynamic random-access memory (DRAM) coupled with the interconnect.