[OPENMP][NVPTX]Call get __kmpc_global_thread_num in worker after
initialization.

Function __kmpc_global_thread_num  should be called only after
initialization, not earlier.

llvm-svn: 347919
diff --git a/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp b/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
index d4b599e..2bc98f6 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
+++ b/clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
@@ -1504,6 +1504,8 @@
 
   // Signal start of parallel region.
   CGF.EmitBlock(ExecuteBB);
+  // Skip initialization.
+  setLocThreadIdInsertPt(CGF, /*AtCurrentPoint=*/true);
 
   // Process work items: outlined parallel functions.
   for (llvm::Function *W : Work) {
@@ -1564,6 +1566,8 @@
 
   // Exit target region.
   CGF.EmitBlock(ExitBB);
+  // Skip initialization.
+  clearLocThreadIdInsertPt(CGF);
 }
 
 /// Returns specified OpenMP runtime function for the current OpenMP