Add the AddLandingPadInfo function.

AddLandingPadInfo takes a landingpad instruction and grabs all of the
information from it that it needs for EH table generation.

llvm-svn: 136429

2 files changed, 39 insertions, 0 deletions

diff --git a/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h b/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h
index 7eb21b5c669..280481b25a3 100644
--- a/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h
+++ b/llvm/include/llvm/CodeGen/FunctionLoweringInfo.h
@@ -220,6 +220,11 @@ void AddCatchInfo(const CallInst &I,
 void CopyCatchInfo(const BasicBlock *SuccBB, const BasicBlock *LPad,
                    MachineModuleInfo *MMI, FunctionLoweringInfo &FLI);
 
+/// AddLandingPadInfo - Extract the exception handling information from the
+/// landingpad instruction and add them to the specified machine module info.
+void AddLandingPadInfo(const LandingPadInst &I, MachineModuleInfo &MMI,
+                       MachineBasicBlock *MBB);
+
 } // end namespace llvm
 
 #endif
diff --git a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
index d5bf12055e0..1f41f043dba 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -454,3 +454,37 @@ void llvm::CopyCatchInfo(const BasicBlock *SuccBB, const BasicBlock *LPad,
       break;
   }
 }
+
+//--------- NEW EH - Begin ---------
+
+/// AddLandingPadInfo - Extract the exception handling information from the
+/// landingpad instruction and add them to the specified machine module info.
+void llvm::AddLandingPadInfo(const LandingPadInst &I, MachineModuleInfo &MMI,
+                             MachineBasicBlock *MBB) {
+  MMI.addPersonality(MBB, I.getPersonalityFn());
+
+  if (I.isCleanup())
+    MMI.addCleanup(MBB);
+
+  for (unsigned i = 0, e = I.getNumClauses(); i != e; ) {
+    switch (I.getClauseType(i)) {
+    case LandingPadInst::Catch:
+      MMI.addCatchTypeInfo(MBB, dyn_cast<GlobalVariable>(I.getClauseValue(i)));
+      ++i;
+      break;
+    case LandingPadInst::Filter: {
+      // Add filters in a list.
+      SmallVector<const GlobalVariable*, 4> FilterList;
+      do {
+        FilterList.push_back(cast<GlobalVariable>(I.getClauseValue(i)));
+        ++i;
+      } while (i != e && I.getClauseType(i) == LandingPadInst::Filter);
+
+      MMI.addFilterTypeInfo(MBB, FilterList);
+      break;
+    }
+    }
+  }
+}
+
+//--------- NEW EH - End   ---------