[PATCH] D120421: [GVN] MemorySSA for GVN: switch to using MemorySSA by default

[Momchil Velikov via Phabricator via llvm-commits]

chill created this revision.
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Old behaviour: MemDep is on by default and MemorySSA is off by
default. Switching MemorySSA on will suppress use of MemDep for
redundant loads elimination.

New behaviour: MemorySSA is on by default and MemDep is off by
default. Switching MemDep on will suppress use of MemorySSA for RLE.


https://reviews.llvm.org/D120421

Files:
  llvm/lib/Transforms/Scalar/GVN.cpp
  llvm/test/Analysis/TypeBasedAliasAnalysis/gvn-nonlocal-type-mismatch.ll
  llvm/test/CodeGen/AMDGPU/llc-pipeline.ll
  llvm/test/CodeGen/AMDGPU/opt-pipeline.ll
  llvm/test/Other/new-pm-defaults.ll
  llvm/test/Other/new-pm-lto-defaults.ll
  llvm/test/Other/new-pm-print-pipeline.ll
  llvm/test/Other/new-pm-thinlto-defaults.ll
  llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
  llvm/test/Other/new-pm-thinlto-postlink-samplepgo-defaults.ll
  llvm/test/Other/new-pm-thinlto-prelink-pgo-defaults.ll
  llvm/test/Other/new-pm-thinlto-prelink-samplepgo-defaults.ll
  llvm/test/Transforms/GVN/PRE/rle.ll
  llvm/test/Transforms/GVN/no-mem-dep-info.ll
  llvm/test/Transforms/LoopVectorize/X86/metadata-enable.ll

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