[all-commits] [llvm/llvm-project] f49247: [AArch64][SVE] Lower function arguments in types o...

[Zhaoshi Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f49247129f3e873841bc6c3fec4bdc7c9d6f1dd7
      https://github.com/llvm/llvm-project/commit/f49247129f3e873841bc6c3fec4bdc7c9d6f1dd7
  Author: Zhaoshi Zheng <zhaoshiz at quicinc.com>
  Date:   2024-05-24 (Fri, 24 May 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64CallingConvention.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/sve-calling-convention-byref.ll
    M llvm/test/CodeGen/AArch64/sve-calling-convention.ll

  Log Message:
  -----------
  [AArch64][SVE] Lower function arguments in types of arrays of predicates (#90122)

Function arguments in types of arrays of scalable predicates, even in [1 x <vscale x 16 x i1>] type, should be allocated to available P0 ~ P3 registers, or to the stack and a point of the stack location is passed to the callee.

See details in https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rst#parameter-passing, step C.7 and C.8



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