[all-commits] [llvm/llvm-project] ae9d06: [RISCV][GISel] Remove s32 input support for G_SITO...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ae9d0623ad65d84022bb4ed8446b6491451ae575
      https://github.com/llvm/llvm-project/commit/ae9d0623ad65d84022bb4ed8446b6491451ae575
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-11-07 (Thu, 07 Nov 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp
    M llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
    M llvm/lib/Target/RISCV/RISCVGISel.td
    M llvm/test/CodeGen/RISCV/GlobalISel/double-convert.ll
    M llvm/test/CodeGen/RISCV/GlobalISel/float-convert.ll
    M llvm/test/CodeGen/RISCV/GlobalISel/instruction-select/itofp-f16-rv64.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/instruction-select/itofp-rv64.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-itofp-f16-rv64.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-itofp-rv64.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/itofp-f16-rv64.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/regbankselect/itofp-rv64.mir

  Log Message:
  -----------
  [RISCV][GISel] Remove s32 input support for G_SITOFP/UITOFP on RV64. (#115236)

I plan to make i32 an illegal type for RV64 to match SelectionDAG and to
remove i32 from the GPR register class.

I've added a sexti32 ComplexPattern to select sext.w+fcvt.s.l as
fcvt.s.w. The recently added zexti32 handles selecting and+fcvt.s.lu as
fcvt.s.wu. There are still some regressions that suggest we should match
g_zero_extend in zexti32.



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