[all-commits] [llvm/llvm-project] d659bd: [GlobalISel][AArch64] Tail call libcalls. (#74929)

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d659bd1635326cfc52460e9a43e08953906903bb
      https://github.com/llvm/llvm-project/commit/d659bd1635326cfc52460e9a43e08953906903bb
  Author: David Green <david.green at arm.com>
  Date:   2024-01-03 (Wed, 03 Jan 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h
    M llvm/include/llvm/CodeGen/GlobalISel/LegalizerInfo.h
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.h
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.h
    M llvm/lib/Target/ARM/ARMLegalizerInfo.cpp
    M llvm/lib/Target/ARM/ARMLegalizerInfo.h
    M llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
    M llvm/lib/Target/Mips/MipsLegalizerInfo.h
    M llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
    M llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.h
    M llvm/lib/Target/SPIRV/SPIRVLegalizerInfo.cpp
    M llvm/lib/Target/SPIRV/SPIRVLegalizerInfo.h
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-fpmode.mir
    M llvm/test/CodeGen/AArch64/fexplog.ll
    M llvm/test/CodeGen/AArch64/fpmode.ll
    M llvm/test/CodeGen/AArch64/fpow.ll
    M llvm/test/CodeGen/AArch64/frem.ll
    M llvm/test/CodeGen/AArch64/fsincos.ll
    M llvm/test/CodeGen/AArch64/llvm.exp10.ll
    M llvm/unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp

  Log Message:
  -----------
  [GlobalISel][AArch64] Tail call libcalls. (#74929)

This tries to allow libcalls to be tail called, using a similar method
to DAG where the type is checked to make sure they match, and if so the
backend, through lowerCall checks that the tailcall is valid for all
arguments.