Add an ivar that maps a landing pad's EH symbol to the call sites that may jump

to the landing pad. This will be used by the back-end to generate the jump
tables for dispatching the arriving longjmp in sjlj eh.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141224 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/MachineModuleInfo.h b/include/llvm/CodeGen/MachineModuleInfo.h
index 4daa663bac..a09a71400d 100644
--- a/include/llvm/CodeGen/MachineModuleInfo.h
+++ b/include/llvm/CodeGen/MachineModuleInfo.h
@@ -119,6 +119,10 @@ class MachineModuleInfo : public ImmutablePass {
   /// information in the current function.
   std::vector<LandingPadInfo> LandingPads;
 
+  /// LPadToCallSiteMap - Map a landing pad's EH symbol to the call site
+  /// indexes.
+  DenseMap<MCSymbol*, SmallVector<unsigned, 4> > LPadToCallSiteMap;
+
   /// CallSiteMap - Map of invoke call site index values to associated begin
   /// EH_LABEL for the current function.
   DenseMap<MCSymbol*, unsigned> CallSiteMap;
@@ -327,6 +331,16 @@ public:
     return LandingPads;
   }
 
+  /// setCallSiteLandingPad - Map the landing pad's EH symbol to the call
+  /// site indexes.
+  void setCallSiteLandingPad(MCSymbol *Sym, ArrayRef<unsigned> Sites);
+
+  /// getCallSiteLandingPad - Get the call site indexes for a landing pad EH
+  /// symbol.
+  SmallVectorImpl<unsigned> &getCallSiteLandingPad(MCSymbol *Sym) {
+    return LPadToCallSiteMap[Sym];
+  }
+
   /// setCallSiteBeginLabel - Map the begin label for a call site.
   void setCallSiteBeginLabel(MCSymbol *BeginLabel, unsigned Site) {
     CallSiteMap[BeginLabel] = Site;