[all-commits] [llvm/llvm-project] dbb904: [RISCV][GISEL] legalize, regbankselect, and instru...

[Michael Maitland via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: dbb9043dea238fa4e5b6a9a7fef99623b543493e
      https://github.com/llvm/llvm-project/commit/dbb9043dea238fa4e5b6a9a7fef99623b543493e
  Author: Michael Maitland <michaeltmaitland at gmail.com>
  Date:   2023-11-30 (Thu, 30 Nov 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp
    M llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
    M llvm/lib/Target/RISCV/GISel/RISCVRegisterBankInfo.cpp
    A llvm/test/CodeGen/RISCV/GlobalISel/instruction-select/merge-unmerge-rv32.mir
    A llvm/test/CodeGen/RISCV/GlobalISel/irtranslator/bitcast-between-f64-and-i64.ll
    A llvm/test/CodeGen/RISCV/GlobalISel/legalizer/merge-unmerge-rv32.mir
    A llvm/test/CodeGen/RISCV/GlobalISel/legalizer/merge-unmerge-rv32d.mir
    A llvm/test/CodeGen/RISCV/GlobalISel/legalizer/merge-unmerge-rv64.mir
    A llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/merge-unmerge-rv32.mir

  Log Message:
  -----------
  [RISCV][GISEL] legalize, regbankselect, and instruction-select for G_… (#73061)

…[UN]MERGE_VALUES

When MERGE or UNMERGE s64 on a subtarget that is non-64bit, it must have
the D extension and use FPR in order to be legal.

All other instances of MERGE and UNMERGE that can be made legal should
be narrowed, widend, or replaced by the combiner.