WIP Coroutine Intrinsics

[GorNishanov]

Summary

This is the second patch in the coroutine series.

Part 1 of N: Documentation and overview is here: http://reviews.llvm.org/D21170

[GorNishanov]

Updated to match the latest RFC:

http://lists.llvm.org/pipermail/llvm-dev/2016-July/102133.html

[GorNishanov]

Being reviewed as https://reviews.llvm.org/D22659

include/llvm/IR/Intrinsics.td

def int_experimental_gc_statepoint : Intrinsic<[llvm_token_ty],
                                 [Throws]>;
 
 def int_experimental_gc_result   : Intrinsic<[llvm_any_ty], [llvm_token_ty],
                                              [IntrReadMem]>;
 def int_experimental_gc_relocate : Intrinsic<[llvm_any_ty],
                                 [llvm_token_ty, llvm_i32_ty, llvm_i32_ty],
                                 [IntrReadMem]>;
 
-//===-------------------------- Other Intrinsics --------------------------===//
+//===------------------------ Coroutine Intrinsics ---------------===//
+// These are documented in docs/Coroutines.rst
+
+def int_coro_alloc : Intrinsic<[llvm_ptr_ty], [], []>;
+def int_coro_begin : Intrinsic<[llvm_ptr_ty], 
+                                           [llvm_ptr_ty, llvm_i32_ty, 
+                                            llvm_ptr_ty, llvm_ptr_ty], []>;
+def int_coro_free : Intrinsic<[llvm_ptr_ty], [llvm_ptr_ty], []>;
+def int_coro_end : Intrinsic<[], [llvm_ptr_ty, llvm_i1_ty], []>;
+
+def int_coro_frame : Intrinsic<[llvm_ptr_ty], [], [IntrNoMem]>;
+def int_coro_size : Intrinsic<[llvm_anyint_ty], [llvm_ptr_ty], [IntrNoMem]>;
+
+def int_coro_save : Intrinsic<[llvm_token_ty], [llvm_ptr_ty], []>;
+def int_coro_suspend : Intrinsic<[llvm_i8_ty], [llvm_token_ty, llvm_i1_ty], []>;
+
+def int_coro_param : Intrinsic<[llvm_i1_ty], [llvm_ptr_ty, llvm_ptr_ty], [IntrReadMem]>;
+
+def int_coro_resume : Intrinsic<[], [llvm_ptr_ty], [Throws]>;
+def int_coro_destroy : Intrinsic<[], [llvm_ptr_ty], [Throws]>;
+def int_coro_done : Intrinsic<[llvm_i1_ty], [llvm_ptr_ty], [IntrReadMem]>;
+def int_coro_promise : Intrinsic<[llvm_anyptr_ty], [llvm_ptr_ty], [IntrReadMem]>;
+def int_coro_from_promise : Intrinsic<[llvm_ptr_ty], [llvm_anyptr_ty], [IntrReadMem]>;
+
+def int_coro_subfn_addr : Intrinsic<[llvm_ptr_ty], [llvm_ptr_ty, llvm_i8_ty], [IntrReadMem]>;
+///===-------------------------- Other Intrinsics --------------------------===//
 //
 def int_flt_rounds : Intrinsic<[llvm_i32_ty]>,
                      GCCBuiltin<"__builtin_flt_rounds">;
 def int_trap : Intrinsic<[], [], [IntrNoReturn]>,
                GCCBuiltin<"__builtin_trap">;
 def int_debugtrap : Intrinsic<[]>,
                     GCCBuiltin<"__builtin_debugtrap">;