Shuffle Instruction With Conditional Masking For Data Rearrangement
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Solution Overview
Problem
Current processor architectures lack shuffle instructions that support conditional masking and 256-bit granularity, limiting their ability to efficiently manipulate and rearrange data elements in floating-point or integer operations.
Innovation Solution
The development of shuffle instructions that incorporate conditional masking and operate at 128-bit or 256-bit granularity, allowing for the selective copying of data elements from source registers to destination registers based on mask bits and immediate values, enabling more flexible data manipulation within processor architectures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current processor architectures use existing shuffle instructions, then basic data shuffling can be performed, but conditional masking and 256-bit granularity are not supported
Solution Approach 1:
The patent combines multiple functionalities into a single shuffle instruction: data shuffling, conditional masking, and 256-bit granularity control. By merging these features into one instruction mechanism, the processor achieves enhanced data manipulation capability without proportionally increasing instruction set complexity, as the existing instruction framework is extended rather than fundamentally redesigned.
Solution Approach 2:
The shuffle instruction is designed to perform multiple functions simultaneously: it can shuffle data elements, apply conditional masking based on mask bits, and operate at 256-bit granularity. This multi-functional design allows a single instruction to replace what would traditionally require multiple separate instructions, improving adaptability while managing complexity through functional integration.
2Ease of operation
If shuffle instructions support conditional masking and 256-bit granularity, then data manipulation flexibility improves, but instruction set complexity increases
Solution Approach 1:
The instruction is segmented into distinct control fields: mask bits for conditional masking, immediate values for data selection, and granularity specifications for 256-bit operations. This segmentation allows each component to be independently configured and controlled, making the complex functionality manageable and easier to implement while maintaining operational flexibility through modular control parameters.
Solution Approach 2:
The shuffle instruction incorporates dynamic control mechanisms where mask bits can be selectively applied, granularity can be adjusted to 256-bit precision, and data sources can be dynamically selected. These dynamic features enable the instruction to adapt to different data manipulation requirements without requiring multiple static instructions, thereby improving ease of operation while managing complexity through programmable control.
Data Source
AI summary
An apparatus and method are described for shuffling data elements from source registers to a destination register. For example, a method according to one embodiment includes the following operations: reading each mask bit stored in a mask data structure, the mask data structure containing mask bits associated with data elements of a destination register, the values usable for determining whether a masking operation or a shuffle operation should be performed on data elements stored within a first source register and a second source register; for each data element of the destination register, if a mask bit associated with the data element indicates that a shuffle operation should be performed, then shuffling data elements from the first source register and the second source register to the specified data element within the destination register; and if the mask bit indicates that a masking operation should be performed, then performing a specified masking operation with respect to the data element of the destination register.