jeanPerier f65e3af73d [flang] Implement COMPLEX(10) passing and return ABI for X86-64 linux (#74094) ...

COMPLEX(10) passing by value and returning follows C complex
passing/returning ABI.

Cover the COMPLEX(10) case (X87 / __Complex long double on X86-64).

Implements System V ABI for AMD64 version 1.0.

The LLVM signatures match the one generated by clang for the __Complex
long double case.

Note that a FIXME is added for the COMPLEX(8) case that is incorrect in
a corner case. This will be fixed when dealing with passing derived type
by value in BIND(C) context.

2023-12-04 09:47:12 +01:00

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