[all-commits] [llvm/llvm-project] 610b9e: [SDAG] Use shifts if ISD::MUL is illegal when lowe...

[Wang Pengcheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 610b9e23c5a3040aacc6fe85de8694f80bf5bdf5
      https://github.com/llvm/llvm-project/commit/610b9e23c5a3040aacc6fe85de8694f80bf5bdf5
  Author: Wang Pengcheng <wangpengcheng.pp at bytedance.com>
  Date:   2024-03-29 (Fri, 29 Mar 2024)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-ctpop-no-implicit-float.mir
    M llvm/test/CodeGen/Mips/GlobalISel/legalizer/ctpop.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-ctlz-rv32.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-ctlz-rv64.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-ctpop-rv32.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-ctpop-rv64.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-cttz-rv32.mir
    M llvm/test/CodeGen/RISCV/GlobalISel/legalizer/legalize-cttz-rv64.mir
    M llvm/test/CodeGen/RISCV/ctlz-cttz-ctpop.ll
    M llvm/test/CodeGen/RISCV/ctz_zero_return_test.ll
    M llvm/test/CodeGen/RISCV/rv32xtheadbb.ll
    M llvm/test/CodeGen/RISCV/rv32zbb.ll
    M llvm/test/CodeGen/RISCV/rv64-legal-i32/rv64xtheadbb.ll
    M llvm/test/CodeGen/RISCV/rv64-legal-i32/rv64zbb.ll
    M llvm/test/CodeGen/RISCV/rv64xtheadbb.ll
    M llvm/test/CodeGen/RISCV/rv64zbb.ll

  Log Message:
  -----------
  [SDAG] Use shifts if ISD::MUL is illegal when lowering ISD::CTPOP (#86505)

We can avoid libcalls.

Fixes #86205



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