SIMD Vector Shift Instruction for Single-Step Register Operations
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Solution Overview
Problem
Existing SIMD processors require multiple instructions to perform vector shift operations, leading to complex operations and inefficient execution.
Innovation Solution
A vector shift method and processor design that uses a single instruction with a register identifier and shift parameter to perform vector shift operations, simplifying the process and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple instructions are used to perform vector shift operations in prior art SIMD processors, then the operations can be completed, but the operation complexity increases and execution efficiency decreases
Solution Approach 1:
The patent combines multiple separate instructions (load instruction, shift instruction, store instruction) into a single integrated vector shift instruction. This single instruction performs the complete vector shift operation from source register to destination register in one step, eliminating the need for multiple separate instructions and reducing both operation complexity and execution time
Solution Approach 2:
The vector shift instruction is designed as a universal instruction that can handle various vector shift operations (left shift, right shift, arithmetic shift, logical shift) through a unified instruction format with different shift parameters. This multi-functional instruction replaces multiple specialized instructions, simplifying the instruction set and improving execution efficiency
Data Source
AI summary
A vector shift method includes: receiving an instruction including a register identifier and a shift parameter, where the register identifier includes a source register identifier representing a source register to store a source element to be operated in a vector shift operation, and a destination register identifier representing a destination register to store a target element obtained from the vector shift operation, and the shift parameter is used to indicate a rule for the vector shift operation performed on the source element; executing the instruction to perform, according to the shift parameter, the vector shift operation on the source element acquired from the source register, and acquire the target element produced from the vector shift operation; and writing the target element into the destination register.