Created Ice::Instrumentation base class and accompanying hooks.

src/IceCfg.cpp

 //===- subzero/src/IceCfg.cpp - Control flow graph implementation ---------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
 /// \brief Implements the Cfg class.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "IceCfg.h"
 
 #include "IceAssembler.h"
 #include "IceBitVector.h"
 #include "IceCfgNode.h"
 #include "IceClFlags.h"
 #include "IceDefs.h"
 #include "IceELFObjectWriter.h"
 #include "IceGlobalInits.h"
 #include "IceInst.h"
+#include "IceInstrumentation.h"
 #include "IceInstVarIter.h"
 #include "IceLiveness.h"
 #include "IceLoopAnalyzer.h"
 #include "IceOperand.h"
 #include "IceTargetLowering.h"
 
 #include <memory>
 #include <utility>
 
 namespace Ice {
@@ skipping 196 matching lines @@
       addCallToProfileSummary();
     }
     dump("Profiled CFG");
   }
 
   // Create the Hi and Lo variables where a split was needed
   for (Variable *Var : Variables)
     if (auto *Var64On32 = llvm::dyn_cast<Variable64On32>(Var))
       Var64On32->initHiLo(this);
 
+  // Instrument the Cfg, e.g. with AddressSanitizer
+  if (!BuildDefs::minimal() && getFlags().getSanitizeAddresses()) {
+    getContext()->instrumentFunc(this);
+    dump("Instrumented CFG");
+  }
+
   // The set of translation passes and their order are determined by the
   // target.
   getTarget()->translate();
 
   dump("Final output");
   if (getFocusedTiming()) {
     getContext()->dumpLocalTimers(getFunctionName().toString());
   }
 }
 
@@ skipping 1353 matching lines @@
     }
   }
   // Print each basic block
   for (CfgNode *Node : Nodes)
     Node->dump(this);
   if (isVerbose(IceV_Instructions))
     Str << "}\n";
 }
 
 } // end of namespace Ice