[flang] Address more MSVC build issues with reduction & numeric intrinsics

[klausler]

Summary

Move #include <complex.h> to complex-reduction.h, where
it is needed in MSVC builds.

Exclude code that requires a native 128-bit integer type from
compilation by MSVC.

[MehdiChinoune]

It would be better if you exclude int128 intrinsic functions introduced in D99764

[klausler]

Exclude more entry points.

[MehdiChinoune]

I get this error:

D:\dev\llvm-project\flang\runtime\reduction.cpp(95): error C2059: syntax error: 'template'
D:\dev\llvm-project\flang\runtime\reduction.cpp(404): note: see reference to function template instantiation 'signed char Fortran::runtime::GetTotalReduction<Fortran::common::TypeCategory::Integer,1,Fortran::runtime::IntegerSumAccumulator<int>>(const Fortran::runtime::Descriptor &,const char *,int,int,const Fortran::runtime::Descriptor *,ACCUMULATOR &&,const char *)' being compiled
        with
        [
            ACCUMULATOR=Fortran::runtime::IntegerSumAccumulator<int>
        ]

Could you fix it?

[klausler]

Add attempted MSVC work-around to dodge error on "accumulator.template GetResult(...)" in function template.

[MehdiChinoune]

It works

Remaining (after applying the patch)

D:\dev\llvm-project\flang\runtime\reduction.cpp(161): error C2059: syntax error: 'template'

D:\dev\llvm-project\flang\runtime\reduction.cpp(137): error C2059: syntax error: 'template'

[klausler]

Two more sites for the previous fix for a MSVC spurious error.

[MehdiChinoune]

Thanks

I don't see any other error for now.

[klausler]

In D99806#2666949, @MehdiChinoune wrote:

Thanks

I don't see any other error for now.

Thank you for your help. Please approve when convenient.