fix a -Wbool-conversions warning from clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105942 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp
index fe6b290ea9f25a89f65ab179ba869fedad324580..41b891d30f23b3ca0aaaf4acaa90f53d1d260dbe 100644 (file)
--- a/lib/CodeGen/LiveVariables.cpp
+++ b/lib/CodeGen/LiveVariables.cpp
@@ -286,7 +286,7 @@ MachineInstr *LiveVariables::FindLastRefOrPartRef(unsigned Reg) {
   MachineInstr *LastDef = PhysRegDef[Reg];
   MachineInstr *LastUse = PhysRegUse[Reg];
   if (!LastDef && !LastUse)
-    return false;
+    return 0;
 
   MachineInstr *LastRefOrPartRef = LastUse ? LastUse : LastDef;
   unsigned LastRefOrPartRefDist = DistanceMap[LastRefOrPartRef];