Method and device for supporting vector condition memory access
A technology that supports vector and conditional access. It is applied in machine execution devices, instruments, electrical digital data processing, etc. It can solve the problem of reducing the efficiency and flexibility of memory access devices, not directly supporting read and write access operations, memory bank organization and addressing. It can reduce the number of constant loads and shuffles, save data storage space, and improve effective utilization.
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[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] In a VM using N-way SIMD technology, the invention provides a method and device for supporting vector conditional memory access for vector data access and scalar data access of a VM composed of N-way W-bit-width VBs.
[0029] Such as figure 1 As shown, a method for conditional memory access of support vectors, the steps are:
[0030] (1) Set a programmable N-bit VPE conditional access register VCon_AcessBit[N-1:0] and N-bit VB conditional write-back register VCon_CopyBit [N-1:0] in the vector conditional access unit VCAU; corresponding to N The memory access condition execution bit of a VPE, when it is 1, it means execution, and when it is 0, it means no execution; among them, VCon_AcessBit[N-1:0] controls whether the corresponding VB executes the memory access operation, and VCon_CopyBit[N-1:0] is only in Control whether the...
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