From 66b7ba52b7b49cb712c337b934440049ab94454b Mon Sep 17 00:00:00 2001
From: Brad Smith <brad@comstyle.com>
Date: Sat, 27 Jun 2020 21:14:44 -0400
Subject: [PATCH] Add OpenBSD support to be able to retrieve the thread id

---
 llvm/lib/Support/Unix/Threading.inc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llvm/lib/Support/Unix/Threading.inc b/llvm/lib/Support/Unix/Threading.inc
index 5c1bfc5..9c1f116 100644
--- a/llvm/lib/Support/Unix/Threading.inc
+++ b/llvm/lib/Support/Unix/Threading.inc
@@ -37,6 +37,10 @@
 #include <lwp.h> // For _lwp_self()
 #endif
 
+#if defined(__OpenBSD__)
+#include <unistd.h> // For getthrid()
+#endif
+
 #if defined(__linux__)
 #include <sched.h>       // For sched_getaffinity
 #include <sys/syscall.h> // For syscall codes
@@ -105,6 +109,8 @@ uint64_t llvm::get_threadid() {
   return uint64_t(pthread_getthreadid_np());
 #elif defined(__NetBSD__)
   return uint64_t(_lwp_self());
+#elif defined(__OpenBSD__)
+  return uint64_t(getthrid());
 #elif defined(__ANDROID__)
   return uint64_t(gettid());
 #elif defined(__linux__)
-- 
2.7.4