[all-commits] [llvm/llvm-project] df56b5: [RISCV][CodeGen] Add codegen patterns for experime...

[joshua-arch1 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: df56b55e1288b17163ab55f3f8f71cff0224937d
      https://github.com/llvm/llvm-project/commit/df56b55e1288b17163ab55f3f8f71cff0224937d
  Author: Jun Sha (Joshua) <cooper.joshua at linux.alibaba.com>
  Date:   2023-02-17 (Fri, 17 Feb 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfoZfa.td
    A llvm/test/CodeGen/RISCV/double-zfa.ll
    A llvm/test/CodeGen/RISCV/float-zfa.ll
    A llvm/test/CodeGen/RISCV/half-zfa.ll

  Log Message:
  -----------
  [RISCV][CodeGen] Add codegen patterns for experimental zfa extension (try 2)

Recommit by preames with commit message, various style cleanups, and unaddressed review comments corrected.

This patch implements experimental codegen support for the RISCV Zfa extension as specified here: https://github.com/riscv/riscv-isa-manual/releases/download/draft-20221119-5234c63/riscv-spec.pdf, Ch. 25. This extension has not been ratified.

This change does not include support for FLI (upcoming in a follow up change) or FCVTMOD (not relevant for C/C++).

Differential Revision: https://reviews.llvm.org/D143982