Devang points out that we need an assertion here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37097 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/IfConversion.cpp b/lib/CodeGen/IfConversion.cpp
index 57f6a8df5e2cba06778367357ad9488ff3014795..06be01386ab504a1852516e61f5149c951e9eba1 100644 (file)
--- a/lib/CodeGen/IfConversion.cpp
+++ b/lib/CodeGen/IfConversion.cpp
@@ -141,6 +141,8 @@ void IfConverter::AnalyzeBlock(MachineBasicBlock *BB) {
   
   if (!BBI.FBB)
     BBI.FBB = findFalseBlock(BB, BBI.TBB);  
+  assert(BBI.FBB && "Expected to find the fallthrough block!");
+
   AnalyzeBlock(BBI.FBB);
   BBInfo &FBBI = BBAnalysis[BBI.FBB->getNumber()];
   if (FBBI.Kind != ICNotClassfied)