[BOLT] Add NamedRegionTimer to inferStaleProfile (#92621)

Author: shawbyoung

bolt/lib/Profile/StaleProfileMatching.cpp

@@ -30,6 +30,7 @@
 #include "llvm/ADT/Bitfields.h"
 #include "llvm/ADT/Hashing.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Timer.h"
 #include "llvm/Support/xxhash.h"
 #include "llvm/Transforms/Utils/SampleProfileInference.h"
 
@@ -42,6 +43,7 @@ using namespace llvm;
 
 namespace opts {
 
+extern cl::opt<bool> TimeRewrite;
 extern cl::OptionCategory BoltOptCategory;
 
 cl::opt<bool>
@@ -705,6 +707,10 @@ void assignProfile(BinaryFunction &BF,
 
 bool YAMLProfileReader::inferStaleProfile(
     BinaryFunction &BF, const yaml::bolt::BinaryFunctionProfile &YamlBF) {
+
+  NamedRegionTimer T("inferStaleProfile", "stale profile inference", "rewrite",
+                     "Rewrite passes", opts::TimeRewrite);
+
   if (!BF.hasCFG())
     return false;
 

bolt/lib/Rewrite/RewriteInstance.cpp

@@ -235,10 +235,9 @@ UseGnuStack("use-gnu-stack",
   cl::ZeroOrMore,
   cl::cat(BoltCategory));
 
-static cl::opt<bool>
-    TimeRewrite("time-rewrite",
-                cl::desc("print time spent in rewriting passes"), cl::Hidden,
-                cl::cat(BoltCategory));
+cl::opt<bool> TimeRewrite("time-rewrite",
+                          cl::desc("print time spent in rewriting passes"),
+                          cl::Hidden, cl::cat(BoltCategory));
 
 static cl::opt<bool>
 SequentialDisassembly("sequential-disassembly",