Merging r353367:

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r353367 | brad | 2019-02-07 03:06:58 +0100 (Thu, 07 Feb 2019) | 2 lines

Add OpenBSD support to be able to get the thread name

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llvm-svn: 353388

Author: zmodem

llvm/lib/Support/Unix/Threading.inc

@@ -202,6 +202,12 @@ void llvm::get_thread_name(SmallVectorImpl<char> &Name) {
   char buf[len];
   ::pthread_getname_np(::pthread_self(), buf, len);
 
+  Name.append(buf, buf + strlen(buf));
+#elif defined(__OpenBSD__)
+  constexpr uint32_t len = get_max_thread_name_length_impl();
+  char buf[len];
+  ::pthread_get_name_np(::pthread_self(), buf, len);
+
   Name.append(buf, buf + strlen(buf));
 #elif defined(__linux__)
 #if HAVE_PTHREAD_GETNAME_NP