Add support for implicit rethrows in @catch blocks.
Comment exception-handling code generation strategy.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56763 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 36130cf..6aa2e4e 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -79,6 +79,22 @@
const llvm::Type *LLVMIntTy;
uint32_t LLVMPointerWidth;
+
+public:
+ // FIXME: The following should be private once EH code is moved out
+ // of NeXT runtime.
+
+ // ObjCEHStack - This keeps track of which object to rethrow from
+ // inside @catch blocks and which @finally block exits from an EH
+ // scope should be chained through.
+ struct ObjCEHEntry {
+ ObjCEHEntry(llvm::BasicBlock *fb)
+ : Exception(0), FinallyBlock(fb) {}
+
+ llvm::Value *Exception;
+ llvm::BasicBlock *FinallyBlock;
+ };
+ llvm::SmallVector<ObjCEHEntry, 8> ObjCEHStack;
private:
/// LabelIDs - Track arbitrary ids assigned to labels for use in
@@ -108,7 +124,7 @@
llvm::BasicBlock *ContinueBlock;
};
llvm::SmallVector<BreakContinue, 8> BreakContinueStack;
-
+
/// SwitchInsn - This is nearest current switch instruction. It is null if
/// if current context is not in a switch.
llvm::SwitchInst *SwitchInsn;