[NewPM][opt] Add -debug-pass-manager=quiet to not print analysis info

[asbirlea]

lgtm.

llvm/test/Other/debug-pass-manager.ll

+; RUN: opt -passes=inline < %s -debug-pass-manager 2>&1 | FileCheck %s --check-prefix=NORMAL
+; RUN: opt -passes=inline < %s -debug-pass-manager=quiet 2>&1 | FileCheck %s --check-prefix=QUIET
+; RUN: opt -passes=inline < %s -debug-pass-manager=verbose 2>&1 | FileCheck %s --check-prefix=VERBOSE
+
+define void @a() {
+  ret void
+}
+
+; QUIET-NOT: Running pass: ModuleToPostOrderCGSCCPassAdaptor
+; QUIET: Running pass: InlinerPass
+; QUIET-NOT: Running analysis
+
+; NORMAL-NOT: Running pass: ModuleToPostOrderCGSCCPassAdaptor
+; NORMAL: Running pass: InlinerPass
+; NORMAL: Running analysis
+
+; VERBOSE: Running pass: ModuleToPostOrderCGSCCPassAdaptor
+; VERBOSE: Running pass: InlinerPass
+; VERBOSE: Running analysis

llvm/tools/opt/NewPMDriver.cpp

cl::opt<bool> DebugifyEach(
     cl::desc("Start each pass with debugify and end it with check-debugify"));
 
 cl::opt<std::string>
     DebugifyExport("debugify-export",
                    cl::desc("Export per-pass debugify statistics to this file"),
                    cl::value_desc("filename"));
 } // namespace llvm
 
-enum class DebugLogging { None, Normal, Verbose };
+enum class DebugLogging { None, Normal, Verbose, Quiet };
 
 static cl::opt<DebugLogging> DebugPM(
     "debug-pass-manager", cl::Hidden, cl::ValueOptional,
     cl::desc("Print pass management debugging information"),
     cl::init(DebugLogging::None),
     cl::values(
         clEnumValN(DebugLogging::Normal, "", ""),
+        clEnumValN(DebugLogging::Quiet, "quiet",
+                   "Skip printing info about analyses"),
         clEnumValN(
             DebugLogging::Verbose, "verbose",
             "Print extra information about adaptors and pass managers")));
 
 static cl::list<std::string>
     PassPlugins("load-pass-plugin",
                 cl::desc("Load passes from plugin library"));
 
bool llvm::runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
   LoopAnalysisManager LAM;
   FunctionAnalysisManager FAM;
   CGSCCAnalysisManager CGAM;
   ModuleAnalysisManager MAM;
 
   PassInstrumentationCallbacks PIC;
   PrintPassOptions PrintPassOpts;
   PrintPassOpts.Verbose = DebugPM == DebugLogging::Verbose;
+  PrintPassOpts.SkipAnalyses = DebugPM == DebugLogging::Quiet;
   StandardInstrumentations SI(DebugPM != DebugLogging::None, VerifyEachPass,
                               PrintPassOpts);
   SI.registerCallbacks(PIC, &FAM);
   DebugifyEachInstrumentation Debugify;
   if (DebugifyEach)
     Debugify.registerCallbacks(PIC);
 
   PipelineTuningOptions PTO;