[OPENMP] Improved code for generating debug info + generation of all OpenMP regions in termination scope

Patch adds proper generation of debug info for all OpenMP regions. Also, all OpenMP regions are generated in a termination scope, because standard does not allow to throw exceptions out of structured blocks, associated with the OpenMP regions
Differential Revision: http://reviews.llvm.org/D7935

llvm-svn: 231752

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGOpenMPRuntime.cpp b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
index 51865a6141f..59a0b27f168 100644
--- a/clang/lib/CodeGen/CGOpenMPRuntime.cpp
+++ b/clang/lib/CodeGen/CGOpenMPRuntime.cpp
@@ -1047,9 +1047,16 @@ InlinedOpenMPRegionRAII::InlinedOpenMPRegionRAII(
     CodeGenFunction &CGF, const OMPExecutableDirective &D)
     : CGF(CGF) {
   CGF.CapturedStmtInfo = new CGOpenMPInlinedRegionInfo(D, CGF.CapturedStmtInfo);
+  // 1.2.2 OpenMP Language Terminology
+  // Structured block - An executable statement with a single entry at the
+  // top and a single exit at the bottom.
+  // The point of exit cannot be a branch out of the structured block.
+  // longjmp() and throw() must not violate the entry/exit criteria.
+  CGF.EHStack.pushTerminate();
 }
 
 InlinedOpenMPRegionRAII::~InlinedOpenMPRegionRAII() {
+  CGF.EHStack.popTerminate();
   auto *OldCSI =
       cast<CGOpenMPInlinedRegionInfo>(CGF.CapturedStmtInfo)->getOldCSI();
   delete CGF.CapturedStmtInfo;