Give CaptureTracker::shouldExplore a base implementation. Most users want to do

the same thing. No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165435 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/IPO/FunctionAttrs.cpp

@@ -276,8 +276,6 @@ namespace {
 
     void tooManyUses() { Captured = true; }
 
-    bool shouldExplore(Use *U) { return true; }
-
     bool captured(Use *U) {
       CallSite CS(U->getUser());
       if (!CS.getInstruction()) { Captured = true; return true; }