[PATCH] D152550: [Constant Hoisting]: Hoist Constant GEP Expressions.

[hassnaaHamdi via Phabricator via llvm-commits]

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- By default enable consthoist-gep flag.
- We saw a 6% improvement on SPEC17 povary and improvements on some internal workloads.
- There is a little information on why this is disabled by default. Are there specific targets/workloads for which this leads to regressions?


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D152550

Files:
  llvm/lib/Transforms/Scalar/ConstantHoisting.cpp
  llvm/test/CodeGen/ARM/cortex-a57-misched-vstm-wrback.ll
  llvm/test/CodeGen/PowerPC/pr52894-32bit.ll
  llvm/test/CodeGen/PowerPC/pr52894.ll
  llvm/test/CodeGen/RISCV/global-merge.ll
  llvm/test/CodeGen/RISCV/hoist-global-addr-base.ll
  llvm/test/CodeGen/RISCV/unroll-loop-cse.ll
  llvm/test/CodeGen/Thumb/consthoist-imm8-costs-1.ll
  llvm/test/CodeGen/Thumb2/mve-blockplacement.ll
  llvm/test/CodeGen/Thumb2/mve-memtp-loop.ll
  llvm/test/CodeGen/X86/2008-03-31-SpillerFoldingBug.ll
  llvm/test/CodeGen/X86/2009-10-19-atomic-cmp-eflags.ll
  llvm/test/CodeGen/X86/AMX/amx-across-func.ll
  llvm/test/CodeGen/X86/AMX/amx-ldtilecfg-insert.ll
  llvm/test/CodeGen/X86/AMX/amx-spill-merge.ll
  llvm/test/CodeGen/X86/hoist-spill-lpad.ll
  llvm/test/CodeGen/XCore/codemodel.ll

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