Enabling early execution of move-immediate instructions having variable immediate value sizes in processor-based devices

A method for enabling early execution of move-immediate instructions having variable immediate value sizes, comprising:

• detecting, using a move-immediate logic circuit of an execution pipeline of a processing element (PE) of a processor-based device, a first move-immediate instruction comprising a first immediate value and a first destination register;
• determining that a first frequent immediate table (FIT) entry of a plurality of FIT entries of a FIT corresponds to the first immediate value;
• responsive to determining that the first FIT entry in the FIT corresponds to the first immediate value, determining that the first FIT entry contains a valid first immediate physical register file (IPRF) tag corresponding to a first IPRF register of a plurality of IPRF registers of an IPRF;
• and
• responsive to determining that the first FIT entry contains the valid first IPRF tag corresponding to the first IPRF register of the IPRF, writing a first IPRF tag of the first IPRF register into a first most-recent mapping table (MRT) entry of a plurality of MRT entries of an MRT corresponding to the first destination register.

A non-transitory computer-readable medium having stored thereon computer-executable instructions which, when executed by a processor, cause the processor to:

• detect a move-immediate instruction comprising an immediate value and a destination register;
• determine whether a frequent immediate table (FIT) entry of a plurality of FIT entries of a FIT corresponds to the immediate value;
• responsive to determining that the FIT entry in the FIT corresponds to the immediate value, determine whether the FIT entry contains a valid immediate physical register file (IPRF) tag corresponding to an IPRF register of a plurality of IPRF registers of an IPRF;
• and
• responsive to determining that the FIT entry contains a valid IPRF tag corresponding to an IPRF register of the IPRF, write the IPRF tag of the IPRF register into a most-recent mapping table (MRT) entry of a plurality of MRT entries of a MRT corresponding to the destination register.