[PATCH] D113798: Add loop unrolling and peeling preferences for RISCV

[Michael Berg via Phabricator via llvm-commits]

mcberg2021 created this revision.
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Both these preference helper functions have initial support with this change. The loop unrolling preferences are set with initial settings to control thresholds, size and attributes of loops to unroll with some tuning done.  The peeling preferences may need some tuning as well as the initial support looks much like what other architectures utilize.  An unrolling test is added for RISCV as well to track how preferences modify/control loop unrolling.


https://reviews.llvm.org/D113798

Files:
  llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
  llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
  llvm/test/CodeGen/RISCV/unroll.ll

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