[PATCH] D157250: [RISCV] Enable alias analysis by default

[Yunze Zhu(Thead) via Phabricator via llvm-commits]

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In llvm alias analysis is off by default now.
This patch enable alias analysis on RISCV target during code generation by default,
and this makes more chances for improving performance.
Modified related test cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157250

Files:
  llvm/lib/Target/RISCV/RISCVSubtarget.h
  llvm/test/CodeGen/RISCV/rvv/alloca-load-store-scalable-struct.ll
  llvm/test/CodeGen/RISCV/vararg.ll
  llvm/test/CodeGen/RISCV/zdinx-boundary-check.ll

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