Revert "[OPENMP] Fixed codegen for 'omp cancel' construct."

Summary:
r286944 introduced bugs detected by ASAN as use-after-return.
r287025 have not fixed them completely.

This reverts commit r286944 and r287025.

Reviewers: ABataev

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D26720

llvm-svn: 287069

1 files changed, 0 insertions, 29 deletions

diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 6e97452..e5ca9bc 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -982,35 +982,6 @@ private:
   };
   SmallVector<BreakContinue, 8> BreakContinueStack;
 
-  /// Data for exit block for proper support of OpenMP cancellation constructs.
-  struct OMPCancel {
-    JumpDest ExitBlock;
-    llvm::function_ref<void(CodeGenFunction &CGF)> CodeGen;
-    OMPCancel() : CodeGen([](CodeGenFunction &CGF) {}) {}
-  };
-  SmallVector<OMPCancel, 8> OMPCancelStack;
-
-  /// Controls insertion of cancellation exit blocks in worksharing constructs.
-  class OMPCancelStackRAII {
-    CodeGenFunction &CGF;
-
-  public:
-    OMPCancelStackRAII(CodeGenFunction &CGF) : CGF(CGF) {
-      CGF.OMPCancelStack.push_back({});
-    }
-    ~OMPCancelStackRAII() {
-      if (CGF.HaveInsertPoint() &&
-          CGF.OMPCancelStack.back().ExitBlock.isValid()) {
-        auto CJD = CGF.getJumpDestInCurrentScope("cancel.cont");
-        CGF.EmitBranchThroughCleanup(CJD);
-        CGF.EmitBlock(CGF.OMPCancelStack.back().ExitBlock.getBlock());
-        CGF.OMPCancelStack.back().CodeGen(CGF);
-        CGF.EmitBranchThroughCleanup(CJD);
-        CGF.EmitBlock(CJD.getBlock());
-      }
-    }
-  };
-
   CodeGenPGO PGO;
 
   /// Calculate branch weights appropriate for PGO data