[llvm-commits] [llvm] r82040 - /llvm/trunk/lib/CodeGen/MachineModuleInfoImpls.cpp

[Benjamin Kramer]

Author: d0k
Date: Wed Sep 16 06:43:12 2009
New Revision: 82040

URL: http://llvm.org/viewvc/llvm-project?rev=82040&view=rev
Log:
Don't sort the vector when it is empty. This should fix some expensive checking
failures.

Modified:
    llvm/trunk/lib/CodeGen/MachineModuleInfoImpls.cpp

Modified: llvm/trunk/lib/CodeGen/MachineModuleInfoImpls.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineModuleInfoImpls.cpp?rev=82040&r1=82039&r2=82040&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/MachineModuleInfoImpls.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineModuleInfoImpls.cpp Wed Sep 16 06:43:12 2009
@@ -38,7 +38,8 @@
 MachineModuleInfoMachO::GetSortedStubs(const DenseMap<const MCSymbol*, 
                                                       const MCSymbol*> &Map) {
   MachineModuleInfoMachO::SymbolListTy List(Map.begin(), Map.end());
-  qsort(&List[0], List.size(), sizeof(List[0]), SortSymbolPair);
+  if (!List.empty())
+    qsort(&List[0], List.size(), sizeof(List[0]), SortSymbolPair);
   return List;
 }