set line of exception handling basic blocks to zero

llvm/lib/Transforms/IPO/WholeProgramInstrumentDumpper.cpp

@@ -13,6 +13,7 @@ struct VisBasicBlock {
 
         VisBasicBlock(BasicBlock &BB, unsigned Function)
             : Line(-1u), LineEnd(0), Function(Function) {
+                if (BB.begin()->getOpcode() != Instruction::LandingPad) {
                   for (auto &Inst : BB) {
                           if (auto Loc = Inst.getDebugLoc()) {
                                   if (Loc.getLine() == 0)
@@ -28,6 +29,7 @@ struct VisBasicBlock {
                                   LineEnd = std::max(LineEnd, theLoc->getLine());
                           }
                   }
+                }
                 // Restore to 0 when debug info is not available
                 if (Line == -1u)
                         Line = 0;