[PATCH] D151462: [RISCV] Add cleanup pass for TLS local dynamic

[Paul Kirth via Phabricator via llvm-commits]

paulkirth created this revision.
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In the local dynamic case, redundant loads of `_TLS_MODULE_BASE_`
can be removed. This patch follows the precident for other backends by
using a dominator relationship to find these loads and replace their
uses whenever it is possible.

Depends on D151458 <https://reviews.llvm.org/D151458>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D151462

Files:
  llvm/lib/Target/RISCV/CMakeLists.txt
  llvm/lib/Target/RISCV/RISCV.h
  llvm/lib/Target/RISCV/RISCVCleanupLocalDynamicTLSPass.cpp
  llvm/lib/Target/RISCV/RISCVTargetMachine.cpp
  llvm/test/CodeGen/RISCV/O3-pipeline.ll
  llvm/test/CodeGen/RISCV/machinelicm-address-pseudos.ll
  llvm/test/CodeGen/RISCV/mir-target-flags.ll
  llvm/test/CodeGen/RISCV/tls-models.ll

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