[all-commits] [llvm/llvm-project] 2c9c22: [ARM64EC] Fix thunks for vector args (#96003)

[Daniel Paoliello via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2c9c22c6e295b1176225b63ae4cbbceb216da55e
      https://github.com/llvm/llvm-project/commit/2c9c22c6e295b1176225b63ae4cbbceb216da55e
  Author: Daniel Paoliello <danpao at microsoft.com>
  Date:   2024-06-22 (Sat, 22 Jun 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64Arm64ECCallLowering.cpp
    M llvm/test/CodeGen/AArch64/arm64ec-entry-thunks.ll
    M llvm/test/CodeGen/AArch64/arm64ec-exit-thunks.ll

  Log Message:
  -----------
  [ARM64EC] Fix thunks for vector args (#96003)

The checks when building a thunk to decide if an arg needed to be cast
to/from an integer or redirected via a pointer didn't match how arg
types were changed in `canonicalizeThunkType`, this caused LLVM to ICE
when using vector types as args due to incorrect types in a call
instruction.

Instead of duplicating these checks, we should check if the arg type
differs between x64 and AArch64 and then cast or redirect as
appropriate.



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