llvm-project

018dc1b3 - [AMDGPU] Tail call support for whole wave functions (#145860)

[AMDGPU] Tail call support for whole wave functions (#145860) Support tail calls to whole wave functions (trivial) and from whole wave functions (slightly more involved because we need a new pseudo for the tail call return, that patches up the EXEC mask). Move the expansion of whole wave function return pseudos (regular and tail call returns) to prolog epilog insertion, since that's where we patch up the EXEC mask.