[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.

0 files changed, 0 insertions, 0 deletions