From 597362a54bf4bb8de5538b4a1d97c618b18a023c Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Tue, 1 Nov 2011 04:40:56 +0000
Subject: [PATCH] A couple misc fixes so that bugpoint doesn't explode reducing
 code containing landingpads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143435 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/bugpoint/CrashDebugger.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/bugpoint/CrashDebugger.cpp b/tools/bugpoint/CrashDebugger.cpp
index f19ef6222f5..a0aaf5362b8 100644
--- a/tools/bugpoint/CrashDebugger.cpp
+++ b/tools/bugpoint/CrashDebugger.cpp
@@ -401,7 +401,8 @@ bool ReduceCrashingInstructions::TestInsts(std::vector<const Instruction*>
     for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE; ++FI)
       for (BasicBlock::iterator I = FI->begin(), E = FI->end(); I != E;) {
         Instruction *Inst = I++;
-        if (!Instructions.count(Inst) && !isa<TerminatorInst>(Inst)) {
+        if (!Instructions.count(Inst) && !isa<TerminatorInst>(Inst) &&
+            !isa<LandingPadInst>(Inst)) {
           if (!Inst->getType()->isVoidTy())
             Inst->replaceAllUsesWith(UndefValue::get(Inst->getType()));
           Inst->eraseFromParent();
@@ -574,6 +575,9 @@ static bool DebugACrash(BugDriver &BD,
             } else {
               if (BugpointIsInterrupted) goto ExitLoops;
 
+              if (isa<LandingPadInst>(I))
+                continue;
+
               outs() << "Checking instruction: " << *I;
               Module *M = BD.deleteInstructionFromProgram(I, Simplification);