mstorsjo added inline comments.
================
Comment at: lib/Basic/Targets/AArch64.cpp:466-467
+ case CC_X86ThisCall:
+ case CC_X86FastCall:
+ case CC_X86VectorCall:
+ return CCCR_Ignore;
----------------
mstorsjo wrote:
> rnk wrote:
> > Do they really ignore __fastcall and __vectorcall on arm64?
> >
> > I assume __thiscall and __stdcall are all over various Win SDK headers, so
> > they need to be ignored for compatibility, but I've never seen public
> > documented APIs using __vectorcall. The STL ifdefs out those overloads,
> > right?
> I don't have MSVC for arm64 to test with (but @mgrang does so he can check),
> but I included them for consistency and completeness.
@mgrang - can you check whether this compiles without warnings (with e.g.
`-W3`) on MSVC?
```
void __stdcall foo(void) {
}
void __fastcall bar(void) {
}
void __vectorcall baz(void) {
}
```
@rnk - FWIW, I checked MSVC for ARM (32 bit), and that one also ignores all of
them without a warning.
https://reviews.llvm.org/D36105
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