[NFC][opt] Rename VerifierKind enums (#106789)

Make into enum class.

Output really should be InputOutput since it also verifies the input IR.

Author: aeubanks

llvm/tools/opt/NewPMDriver.cpp

@@ -343,8 +343,6 @@ bool llvm::runPassPipeline(
     bool ShouldPreserveBitcodeUseListOrder, bool EmitSummaryIndex,
     bool EmitModuleHash, bool EnableDebugify, bool VerifyDIPreserve,
     bool UnifiedLTO) {
-  bool VerifyEachPass = VK == VK_VerifyEachPass;
-
   auto FS = vfs::getRealFileSystem();
   std::optional<PGOOptions> P;
   switch (PGOKindFlag) {
@@ -410,7 +408,7 @@ bool llvm::runPassPipeline(
   PrintPassOpts.Verbose = DebugPM == DebugLogging::Verbose;
   PrintPassOpts.SkipAnalyses = DebugPM == DebugLogging::Quiet;
   StandardInstrumentations SI(M.getContext(), DebugPM != DebugLogging::None,
-                              VerifyEachPass, PrintPassOpts);
+                              VK == VerifierKind::EachPass, PrintPassOpts);
   SI.registerCallbacks(PIC, &MAM);
   DebugifyEachInstrumentation Debugify;
   DebugifyStatsMap DIStatsMap;
@@ -483,7 +481,7 @@ bool llvm::runPassPipeline(
     }
   }
 
-  if (VK > VK_NoVerifier)
+  if (VK != VerifierKind::None)
     MPM.addPass(VerifierPass());
   if (EnableDebugify)
     MPM.addPass(NewPMCheckDebugifyPass(false, "", &DIStatsMap));

llvm/tools/opt/NewPMDriver.h

@@ -44,7 +44,7 @@ enum OutputKind {
   OK_OutputBitcode,
   OK_OutputThinLTOBitcode,
 };
-enum VerifierKind { VK_NoVerifier, VK_VerifyOut, VK_VerifyEachPass };
+enum class VerifierKind { None, InputOutput, EachPass };
 enum PGOKind {
   NoPGO,
   InstrGen,

llvm/tools/opt/optdriver.cpp

@@ -726,11 +726,11 @@ extern "C" int optMain(
                ? OK_OutputAssembly
                : (OutputThinLTOBC ? OK_OutputThinLTOBitcode : OK_OutputBitcode);
 
-    VerifierKind VK = VK_VerifyOut;
+    VerifierKind VK = VerifierKind::InputOutput;
     if (NoVerify)
-      VK = VK_NoVerifier;
+      VK = VerifierKind::None;
     else if (VerifyEach)
-      VK = VK_VerifyEachPass;
+      VK = VerifierKind::EachPass;
 
     // The user has asked to use the new pass manager and provided a pipeline
     // string. Hand off the rest of the functionality to the new code for that