llvm-project

30d2cb5a - [Flang][OpenMP][Runtime] Minor Flang runtime for OpenMP AMDGPU modifications (#152631)

[Flang][OpenMP][Runtime] Minor Flang runtime for OpenMP AMDGPU modifications (#152631) We have some modifications downstream to compile the flang runtime for amdgpu using clang OpenMP, some more hacky than others to workaround (hopefully temporary) compiler issues. The additions here are the non-hacky alterations. Main changes: * Create freestanding versions of memcpy, strlen and memmove, and replace std:: references with these so that we can default to std:: when it's available, or our own Flang implementation when it's not. * Wrap more bits and pieces of the library in declare target wrappers (RT_* macros). * Fix some warnings that'll pose issues with werror on, in this case having the namespace infront of variables passed to templates. Another minor issues that'll likely still pop up depending on the program you're linking with is that abort will be undefined, it is perhaps possible to solve it with a freestanding implementation as with memcpy etc. but we end up with multiple definitions in this case. An alternative is to create an empty extern "c" version (which can be empty or forwrd on to the builtin). Co-author: Dan Palermo Dan.Palermo@amd.com