US 12,373,216 B2 · Conditional branch instructions

Abstract

Various embodiments of the present disclosure relate to conditional branch instructions to support software pipelining techniques. In an example embodiment, a system including instruction fetch circuitry, decoder circuitry, and conditional branch circuitry is provided. The instruction fetch circuitry is configured to fetch a conditional branch instruction from memory and provide the instruction to the decoder circuitry. The instruction includes an iteration count and multiple branch destinations. The branch destinations include two or more branch destinations corresponding to conditions against which the conditional branch circuitry evaluates the iteration count. The decoder circuitry is configured to cause the conditional branch circuitry to select a branch destination, of the two or more branch destinations, based on a comparison of the iteration count to each of the conditions and cause the instruction fetch circuitry to fetch an indication of an instruction from a memory location stored at the selected branch destination.

Claims20

Dependent claims

A system, comprising:

instruction fetch circuitry;
decoder circuitry coupled to the instruction fetch circuitry;
and
conditional branch circuitry coupled to the decoder circuitry;
wherein the instruction fetch circuitry is configured to:
fetch a conditional branch instruction from a memory, wherein the conditional branch instruction specifies an iteration count and two or more branch destinations, corresponding to conditions against which the conditional branch circuitry evaluates the iteration count;
and
provide the conditional branch instruction to the decoder circuitry;
and
wherein the decoder circuitry is configured to cause the conditional branch circuitry to:
select a branch destination, of the two or more branch destinations, based on a comparison of the iteration count to each of the conditions;
and
cause the instruction fetch circuitry to fetch an indication of an instruction from a memory location stored at the selected branch destination.

10 more elements

Dependencies are inferred from the claim text.

Conditional branch instructions

Life of this patent

Conditional branch instructions

Life of this patent

Abstract

Claims20