From 2ce8399a2d7cd53a18d8c6f559d99ce90123ff69 Mon Sep 17 00:00:00 2001
From: Jakub Staszak <jstaszak@apple.com>
Date: Fri, 17 Jun 2011 17:30:10 +0000
Subject: [PATCH] Allow empty Weights vector.

llvm-svn: 133265
---
 llvm/lib/CodeGen/MachineBasicBlock.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/CodeGen/MachineBasicBlock.cpp b/llvm/lib/CodeGen/MachineBasicBlock.cpp
index 613f0c4f7f5c..7d7bfb1fc307 100644
--- a/llvm/lib/CodeGen/MachineBasicBlock.cpp
+++ b/llvm/lib/CodeGen/MachineBasicBlock.cpp
@@ -776,7 +776,8 @@ uint32_t MachineBasicBlock::getSuccWeight(MachineBasicBlock *succ) {
 /// iterator
 MachineBasicBlock::weight_iterator MachineBasicBlock::
 getWeightIterator(MachineBasicBlock::succ_iterator I) {
-  assert(Weights.size() == Successors.size() && "Async weight list!");
+  assert((Weights.size() == Successors.size() || Weights.empty()) &&
+         "Async weight list!");
   size_t index = std::distance(Successors.begin(), I);
   assert(index < Weights.size() && "Not a current successor!");
   return Weights.begin() + index;