[PATCH] D77152: [SelectionDAG] Better legalization for FSHL and FSHR

[Jay Foad via Phabricator via llvm-commits]

foad updated this revision to Diff 254244.
foad marked an inline comment as done.
foad added a comment.

Translate fshl/fshr intrinsics to ROTL/ROTR up front whenever possible.
Implement integer promotion for ROTL/ROTR in addition to FSHL/FSHR.
Improve expandROT.
This removes most of the major code quality regressions.
Some tests still crash because I haven't implemented integer expansion.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77152/new/

https://reviews.llvm.org/D77152

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
  llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/test/CodeGen/AArch64/funnel-shift-rot.ll
  llvm/test/CodeGen/AArch64/funnel-shift.ll
  llvm/test/CodeGen/AArch64/shift-by-signext.ll
  llvm/test/CodeGen/AMDGPU/fshl.ll
  llvm/test/CodeGen/AMDGPU/fshr.ll
  llvm/test/CodeGen/PowerPC/funnel-shift-rot.ll
  llvm/test/CodeGen/PowerPC/funnel-shift.ll
  llvm/test/CodeGen/X86/vector-fshl-128.ll
  llvm/test/CodeGen/X86/vector-fshl-256.ll
  llvm/test/CodeGen/X86/vector-fshl-512.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-128.ll
  llvm/test/CodeGen/X86/vector-fshl-rot-512.ll
  llvm/test/CodeGen/X86/vector-fshr-128.ll
  llvm/test/CodeGen/X86/vector-fshr-256.ll
  llvm/test/CodeGen/X86/vector-fshr-512.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-128.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-256.ll
  llvm/test/CodeGen/X86/vector-fshr-rot-512.ll

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