Functions that generate RISC-V DSP SIMD instructions. More...

Modules
	SIMD Data Processing Instructions
	SIMD Data Processing Instructions.

	Non-SIMD Instructions
	Non-SIMD Instructions.

	Partial-SIMD Data Processing Instructions
	Partial-SIMD Data Processing Instructions.

	64-bit Profile Instructions
	64-bit Profile Instructions

	RV64 Only Instructions
	RV64 Only Instructions.

	Nuclei Default SIMD DSP Additional Instructions
	(RV32 & RV64)Nuclei Customized DSP Instructions

	Nuclei N1 SIMD DSP Additional Instructions
	(RV32 only)Nuclei Customized N1 DSP Instructions

	Nuclei N2 SIMD DSP Additional Instructions
	(RV32 only)Nuclei Customized N2 DSP Instructions

	Nuclei N3 SIMD DSP Additional Instructions
	(RV32 only)Nuclei Customized N3 DSP Instructions

Detailed Description

Functions that generate RISC-V DSP SIMD instructions.

The following functions generate specified RISC-V SIMD instructions that cannot be directly accessed by compiler.

DSP ISA Extension Instruction Summary
- Shorthand Definitions
  - r.H == rH1: r[31:16], r.L == r.H0: r[15:0]
  - r.B3: r[31:24], r.B2: r[23:16], r.B1: r[15:8], r.B0: r[7:0]
  - r.B[x]: r[(x*8+7):(x*8+0)]
  - r.H[x]: r[(x*16+7):(x*16+0)]
  - r.W[x]: r[(x*32+31):(x*32+0)]
  - r[xU]: the upper 32-bit of a 64-bit number; xU represents the GPR number that contains this upper part 32-bit value.
  - r[xL]: the lower 32-bit of a 64-bit number; xL represents the GPR number that contains this lower part 32-bit value.
  - r[xU].r[xL]: a 64-bit number that is formed from a pair of GPRs.
  - s>>: signed arithmetic right shift:
  - u>>: unsigned logical right shift
  - SAT.Qn(): Saturate to the range of [-2^n, 2^n-1], if saturation happens, set PSW.OV.
  - SAT.Um(): Saturate to the range of [0, 2^m-1], if saturation happens, set PSW.OV.
  - RUND(): Indicate rounding, i.e., add 1 to the most significant discarded bit for right shift or MSW-type multiplication instructions.
  - Sign or Zero Extending functions:
    - SEm(data): Sign-Extend data to m-bit.:
    - ZEm(data): Zero-Extend data to m-bit.
  - ABS(x): Calculate the absolute value of x.
  - CONCAT(x,y): Concatinate x and y to form a value.
  - u<: Unsinged less than comparison.
  - u<=: Unsinged less than & equal comparison.
  - u>: Unsinged greater than comparison.
  - s*: Signed multiplication.
  - u*: Unsigned multiplication.

Modules