Convert Clang over to resuming from landing pads with llvm.eh.resume.

It's quite likely that this will explode, but I need to know how. :)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132269 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 4 deletions

diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 9aa7903ab7..bb8fd8e243 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -603,6 +603,10 @@ public:
   /// exception pointer into this alloca.
   llvm::Value *ExceptionSlot;
 
+  /// The selector slot.  Under the MandatoryCleanup model, all
+  /// landing pads write the current selector value into this alloca.
+  llvm::AllocaInst *EHSelectorSlot;
+
   /// Emits a landing pad for the current EH stack.
   llvm::BasicBlock *EmitLandingPad();
 
@@ -951,6 +955,10 @@ private:
   CGDebugInfo *DebugInfo;
   bool DisableDebugInfo;
 
+  /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid
+  /// calling llvm.stacksave for multiple VLAs in the same scope.
+  bool DidCallStackSave;
+
   /// IndirectBranch - The first time an indirect goto is seen we create a block
   /// with an indirect branch.  Every time we see the address of a label taken,
   /// we add the label to the indirect goto.  Every subsequent indirect goto is
@@ -997,10 +1005,6 @@ private:
   // enter/leave scopes.
   llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap;
 
-  /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid
-  /// calling llvm.stacksave for multiple VLAs in the same scope.
-  bool DidCallStackSave;
-
   /// A block containing a single 'unreachable' instruction.  Created
   /// lazily by getUnreachableBlock().
   llvm::BasicBlock *UnreachableBlock;
@@ -1050,6 +1054,7 @@ public:
   /// Returns a pointer to the function's exception object slot, which
   /// is assigned in every landing pad.
   llvm::Value *getExceptionSlot();
+  llvm::Value *getEHSelectorSlot();
 
   llvm::Value *getNormalCleanupDestSlot();
   llvm::Value *getEHCleanupDestSlot();
@@ -1705,6 +1710,7 @@ public:
   void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S);
   void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S);
 
+  llvm::Constant *getUnwindResumeFn();
   llvm::Constant *getUnwindResumeOrRethrowFn();
   void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
   void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);