[PATCH] D140638: [Codegen][LegalizeIntegerTypes] New legalization strategy for scalar shifts: shift through stack

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 485201.
lebedev.ri retitled this revision from "[Codegen][LegalizeIntegerTypes] New legalization strategy for scalar shifts w/ shift amount by a multiple of CHAR_BIT" to "[Codegen][LegalizeIntegerTypes] New legalization strategy for scalar shifts: shift through stack".
lebedev.ri edited the summary of this revision.
lebedev.ri added a comment.
Herald added subscribers: atanasyan, javed.absar, sdardis, dylanmckay.

Aha, and i'm missing the point.
This *nicely* generalizes to non-CHAR_BIT-multiple shift amounts: https://alive2.llvm.org/ce/z/pz5G-K


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D140638/new/

https://reviews.llvm.org/D140638

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/ARM/ARMISelLowering.cpp
  llvm/lib/Target/ARM/ARMISelLowering.h
  llvm/lib/Target/RISCV/RISCVISelLowering.h
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/lib/Target/X86/X86ISelLowering.h
  llvm/test/CodeGen/AArch64/wide-scalar-shift-by-byte-multiple-legalization.ll
  llvm/test/CodeGen/AArch64/wide-scalar-shift-legalization.ll
  llvm/test/CodeGen/AVR/shift.ll
  llvm/test/CodeGen/Mips/llvm-ir/ashr.ll
  llvm/test/CodeGen/Mips/llvm-ir/lshr.ll
  llvm/test/CodeGen/Mips/llvm-ir/shl.ll
  llvm/test/CodeGen/PowerPC/ctrloop-sh.ll
  llvm/test/CodeGen/PowerPC/wide-scalar-shift-by-byte-multiple-legalization.ll
  llvm/test/CodeGen/PowerPC/wide-scalar-shift-legalization.ll
  llvm/test/CodeGen/RISCV/shifts.ll
  llvm/test/CodeGen/RISCV/wide-scalar-shift-by-byte-multiple-legalization.ll
  llvm/test/CodeGen/RISCV/wide-scalar-shift-legalization.ll
  llvm/test/CodeGen/X86/scheduler-backtracking.ll
  llvm/test/CodeGen/X86/shift-i128.ll
  llvm/test/CodeGen/X86/shift-i256.ll
  llvm/test/CodeGen/X86/wide-scalar-shift-by-byte-multiple-legalization.ll
  llvm/test/CodeGen/X86/wide-scalar-shift-legalization.ll
  llvm/test/CodeGen/X86/widen-load-of-small-alloca-with-zero-upper-half.ll
  llvm/test/CodeGen/X86/widen-load-of-small-alloca.ll