[all-commits] [llvm/llvm-project] 2cadf8: [RISCV] Pass OptLevel to `RISCVDAGToDAGISel` corre...

[eop Chen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2cadf84fc817a6c89eca0556a078d7879091e2a5
      https://github.com/llvm/llvm-project/commit/2cadf84fc817a6c89eca0556a078d7879091e2a5
  Author: eopXD <eop.chen at sifive.com>
  Date:   2022-05-30 (Mon, 30 May 2022)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCV.h
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
    M llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
    M llvm/test/CodeGen/RISCV/O0-pipeline.ll
    M llvm/test/CodeGen/RISCV/isel-optnone.ll

  Log Message:
  -----------
  [RISCV] Pass OptLevel to `RISCVDAGToDAGISel` correctly

Originally, `OptLevel` isn't passed into the `MachineFunctionPass`.
This lets the default parameter of `SelectionDAGISel`, which is
`CodeGenOpt::Default`, be passed in. OptLevelChanger captures the
optimization level with the parameter, and rather not the value
within `TargetMachine`. This lets the optimization be
unintentionally overwriten if other value than `CodeGenOpt::Default`
passed.

This patch fixes this by passing the optimization level rather
than using the default value.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D126641