[llvm] [ORC-RT] Initial check-in for a new, top-level ORC runtime project. (PR #113499)

[Petr Hosek via llvm-commits]

================
@@ -0,0 +1,27 @@
+/*===- orc-rt-c/orc-rt.h - Placeholder header for orc-rt ----------*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* Placeholder header for initial orc-rt checkin                              *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
----------------
petrhosek wrote:

Is there any particular reason for using `/* */` comments rather than `//`?  We don't support pre-C99 in LLVM and we use `//` in other C sources elsewhere, see for example https://github.com/llvm/llvm-project/blob/c876d719ef5b10128eca6d8677068248b4831017/compiler-rt/lib/builtins/absvdi2.c.

https://github.com/llvm/llvm-project/pull/113499