Switch codegen for -fcatch-undefined-bahavior over to __builtin_trap
instead of abort to improve codesize and codegen.

llvm-svn: 91374
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp
index c3bae07..28df9e4 100644
--- a/clang/lib/CodeGen/CodeGenFunction.cpp
+++ b/clang/lib/CodeGen/CodeGenFunction.cpp
@@ -31,7 +31,7 @@
     DebugInfo(0), IndirectBranch(0),
     SwitchInsn(0), CaseRangeBlock(0), InvokeDest(0),
     CXXThisDecl(0), CXXVTTDecl(0),
-    ConditionalBranchLevel(0), TerminateHandler(0), AbortBB(0),
+    ConditionalBranchLevel(0), TerminateHandler(0), TrapBB(0),
     UniqueAggrDestructorCount(0) {
   LLVMIntTy = ConvertType(getContext().IntTy);
   LLVMPointerWidth = Target.getPointerWidth(0);