From 9884e365dcae7a04908241df12a3a9ce063c0b61 Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Tue, 23 Feb 2010 05:59:16 +0000
Subject: [PATCH] Simplify check for basic block with a CXXTryStmt terminator.

llvm-svn: 96892
---
 clang/lib/Sema/SemaChecking.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index aa8ddf8018c1..3863e1558778 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -2278,9 +2278,8 @@ void Sema::CheckUnreachable(AnalysisContext &AC) {
   for (CFG::iterator I = cfg->begin(), E = cfg->end(); I != E; ++I) {
     CFGBlock &b = **I;
     if (!reachable[b.getBlockID()]) {
-      if (b.pred_begin() == b.pred_end()) {
-        if (!AddEHEdges && b.getTerminator()
-            && isa<CXXTryStmt>(b.getTerminator())) {
+      if (b.pred_empty()) {
+        if (!AddEHEdges && dyn_cast_or_null<CXXTryStmt>(b.getTerminator())) {
           // When not adding EH edges from calls, catch clauses
           // can otherwise seem dead.  Avoid noting them as dead.
           numReachable += ScanReachableFromBlock(b, reachable);