[PATCH] D122366: [LoongArch] Construct codegen infra and generate first add instruction.

[wangei via Phabricator via llvm-commits]

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This patch constructs codegen infra and successfully generate the first
'add' instruction. Add integer calling convention for fixed arguments which
are passed with general-purpose registers.

New test added here:

  CodeGen/LoongArch/ir-instruction/add.ll

The test file is placed in a subdirectory because we will use
subdirctories to distinguish different categories of tests (e.g.
 intrinsic, inline-asm ...)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122366

Files:
  llvm/lib/Target/LoongArch/LoongArch.h
  llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
  llvm/lib/Target/LoongArch/LoongArchISelLowering.h
  llvm/lib/Target/LoongArch/LoongArchInstrFormats.td
  llvm/lib/Target/LoongArch/LoongArchInstrInfo.cpp
  llvm/lib/Target/LoongArch/LoongArchInstrInfo.h
  llvm/lib/Target/LoongArch/LoongArchInstrInfo.td
  llvm/lib/Target/LoongArch/LoongArchTargetMachine.cpp
  llvm/test/CodeGen/LoongArch/ir-instruction/add.ll

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