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Add 32bit multiply with two 32bit add instruction #142

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ivq opened this issue Aug 12, 2022 · 0 comments
Open

Add 32bit multiply with two 32bit add instruction #142

ivq opened this issue Aug 12, 2022 · 0 comments

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@ivq
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ivq commented Aug 12, 2022

Instruction like UMAAL rd1, rd2, rs1, rs2 which sets the register pair rd1, rd2 to rs1 * rs2 + rd1 + rd2 will help multi precision multiplication a lot.
Current spec includes UMAR64 and ADD64. These two can be used to optimize multi precision multiplication, but UMALL will save a significant cycles.
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@ivq