[PATCH] D63433: [RISCV] Add RISCV-specific TargetTransformInfo

[Sam Elliott via Phabricator via llvm-commits]

lenary created this revision.
lenary added reviewers: asb, luismarques.
lenary added a project: LLVM.

LLVM Allows Targets to provide information that guides optimisations
made to LLVM IR. This is done with callbacks on a TargetTransformInfo object.

This patch adds a TargetTransformInfo class for RISC-V. This will allow us to
implement RISC-V specific callbacks as they become necessary.

This commit also adds the getIntImmCost callbacks, and tests them with a simple
constant hoisting test.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D63433

Files:
  llvm/lib/Target/RISCV/CMakeLists.txt
  llvm/lib/Target/RISCV/LLVMBuild.txt
  llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
  llvm/lib/Target/RISCV/RISCVTargetMachine.h
  llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
  llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
  llvm/test/Transforms/ConstantHoisting/RISCV/immediates.ll
  llvm/test/Transforms/ConstantHoisting/RISCV/lit.local.cfg

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