[clang][deps] NFC: Rename building CompilerInvocation

The dependency scanner works with multiple instances of `Compiler{Instance,Invocation}`. From names of the variables/members, their purpose is not obvious.

This patch gives descriptive name to the generated `CompilerInvocation` that can be used to derive the command-line to build a modular dependency.

Depends on D111725.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D111728

Author: jansvoboda11

clang/include/clang/Tooling/DependencyScanning/ModuleDepCollector.h

@@ -102,7 +102,7 @@ struct ModuleDeps {
   bool ImportedByMainFile = false;
 
   /// Compiler invocation that can be used to build this module (without paths).
-  CompilerInvocation Invocation;
+  CompilerInvocation BuildInvocation;
 
   /// Gets the canonical command line suitable for passing to clang.
   ///

clang/lib/Tooling/DependencyScanning/ModuleDepCollector.cpp

@@ -85,7 +85,7 @@ serializeCompilerInvocation(const CompilerInvocation &CI) {
 std::vector<std::string> ModuleDeps::getCanonicalCommandLine(
     std::function<StringRef(ModuleID)> LookupPCMPath,
     std::function<const ModuleDeps &(ModuleID)> LookupModuleDeps) const {
-  CompilerInvocation CI(Invocation);
+  CompilerInvocation CI(BuildInvocation);
   FrontendOptions &FrontendOpts = CI.getFrontendOpts();
 
   InputKind ModuleMapInputKind(FrontendOpts.DashX.getLanguage(),
@@ -102,7 +102,7 @@ std::vector<std::string> ModuleDeps::getCanonicalCommandLine(
 
 std::vector<std::string>
 ModuleDeps::getCanonicalCommandLineWithoutModulePaths() const {
-  return serializeCompilerInvocation(Invocation);
+  return serializeCompilerInvocation(BuildInvocation);
 }
 
 std::vector<std::string>
@@ -115,7 +115,7 @@ ModuleDeps::getAdditionalArgsWithoutModulePaths() const {
   if (IsSystem)
     Ret.push_back("-fsystem-module");
 
-  if (Invocation.getLangOpts()->NeededByPCHOrCompilationUsesPCH)
+  if (BuildInvocation.getLangOpts()->NeededByPCHOrCompilationUsesPCH)
     Ret.push_back("-fmodule-related-to-pch");
 
   return Ret;
@@ -278,13 +278,14 @@ ModuleID ModuleDepCollectorPP::handleTopLevelModule(const Module *M) {
   llvm::DenseSet<const Module *> SeenModules;
   addAllSubmodulePrebuiltDeps(M, MD, SeenModules);
 
-  MD.Invocation = MDC.makeInvocationForModuleBuildWithoutPaths(
-      MD, [&](CompilerInvocation &CI) {
+  MD.BuildInvocation = MDC.makeInvocationForModuleBuildWithoutPaths(
+      MD, [&](CompilerInvocation &BuildInvocation) {
         if (MDC.OptimizeArgs)
-          optimizeHeaderSearchOpts(CI.getHeaderSearchOpts(),
+          optimizeHeaderSearchOpts(BuildInvocation.getHeaderSearchOpts(),
                                    *MDC.ScanInstance.getASTReader(), *MF);
       });
-  MD.ID.ContextHash = MD.Invocation.getModuleHash(Instance.getDiagnostics());
+  MD.ID.ContextHash =
+      MD.BuildInvocation.getModuleHash(MDC.ScanInstance.getDiagnostics());
 
   llvm::DenseSet<const Module *> AddedModules;
   addAllSubmoduleDeps(M, MD, AddedModules);

clang/tools/clang-scan-deps/ClangScanDeps.cpp

@@ -362,7 +362,7 @@ class FullDeps {
     SmallString<256> ExplicitPCMPath(
         !ModuleFilesDir.empty()
             ? ModuleFilesDir
-            : MD.Invocation.getHeaderSearchOpts().ModuleCachePath);
+            : MD.BuildInvocation.getHeaderSearchOpts().ModuleCachePath);
     llvm::sys::path::append(ExplicitPCMPath, MD.ID.ContextHash, Filename);
     return std::string(ExplicitPCMPath);
   }