[PATCH] D133337: [LoongArch] Add codegen support for frint

[Gong LingQin via Phabricator via llvm-commits]

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According to the revised description in `LoongArch Reference Manual v1.02`,
frint.[s/d] does not judge whether floating-point inexact exceptions are
allowed indicated by FCSR, i.e. always executes roundToIntegralExact(x).
What's more, the manual also specifically defines that frint.s/d is only
necessary to be defined in LA64. So ISD::FRINT is legal for LA64.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D133337

Files:
  llvm/lib/Target/LoongArch/LoongArchFloat32InstrInfo.td
  llvm/lib/Target/LoongArch/LoongArchFloat64InstrInfo.td
  llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
  llvm/test/CodeGen/LoongArch/frint.ll

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