FLI.D

ISA

FLI.D is a Zfa-extension instruction that loads a floating-point constant into the double-precision floating-point register rd. It is part of the Zfa extension, which defines FLI.[HSD] variants for half-, single-, and double-precision floating-point formats.

First seen 9/27/2026

Last seen 9/27/2026

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FLI.D

Overview

FLI.D is a floating-point load-immediate instruction introduced as part of the RISC-V Zfa extension. It writes a constant floating-point value to the double-precision (.D) floating-point register rd.

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RELATIONSHIPS

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Zfa part of → 90% 1e

The Zfa extension includes the FLI.D instruction variant.

sail-riscv ← implements 93% 1e

sail-riscv adds support for the FLI.D instruction as part of Zfa.

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CITATIONS

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[1] FLI.D is a floating-point load-immediate instruction in the double-precision format, part of the FLI.[HSD] family. Add Zfa extension support (excl. quad-precision) — sail-riscv commit f2d8e1b9

[2] FLI.D was added to sail-riscv together with infrastructure for the Zfa extension and a set of Zfa instructions including FMINM/FMAXM, FROUND/FROUNDNX, FMVH.X.D, FMVP.D.X, FLEQ/FLTQ, and FCVTMOD.W.D. Add Zfa extension support (excl. quad-precision) — sail-riscv commit f2d8e1b9