Make the clang module container format selectable from the command line.

- introduces a new cc1 option -fmodule-format=[raw,obj]
  with 'raw' being the default
- supports arbitrary module container formats that libclang is agnostic to
- adds the format to the module hash to avoid collisions
- splits the old PCHContainerOperations into PCHContainerWriter and
  a PCHContainerReader.

Thanks to Richard Smith for reviewing this patch!

llvm-svn: 242499

1 files changed, 6 insertions, 4 deletions

diff --git a/clang/lib/ARCMigrate/ARCMT.cpp b/clang/lib/ARCMigrate/ARCMT.cpp
index f33ad21cf02..e3288421859 100644
--- a/clang/lib/ARCMigrate/ARCMT.cpp
+++ b/clang/lib/ARCMigrate/ARCMT.cpp
@@ -167,7 +167,7 @@ static bool HasARCRuntime(CompilerInvocation &origCI) {
 
 static CompilerInvocation *
 createInvocationForMigration(CompilerInvocation &origCI,
-                             const PCHContainerOperations &PCHContainerOps) {
+                             const PCHContainerReader &PCHContainerRdr) {
   std::unique_ptr<CompilerInvocation> CInvok;
   CInvok.reset(new CompilerInvocation(origCI));
   PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
@@ -180,7 +180,7 @@ createInvocationForMigration(CompilerInvocation &origCI,
         new DiagnosticsEngine(DiagID, &origCI.getDiagnosticOpts(),
                               new IgnoringDiagConsumer()));
     std::string OriginalFile = ASTReader::getOriginalSourceFile(
-        PPOpts.ImplicitPCHInclude, FileMgr, PCHContainerOps, *Diags);
+        PPOpts.ImplicitPCHInclude, FileMgr, PCHContainerRdr, *Diags);
     if (!OriginalFile.empty())
       PPOpts.Includes.insert(PPOpts.Includes.begin(), OriginalFile);
     PPOpts.ImplicitPCHInclude.clear();
@@ -247,7 +247,8 @@ bool arcmt::checkForManualIssues(
   assert(!transforms.empty());
 
   std::unique_ptr<CompilerInvocation> CInvok;
-  CInvok.reset(createInvocationForMigration(origCI, *PCHContainerOps));
+  CInvok.reset(
+      createInvocationForMigration(origCI, PCHContainerOps->getRawReader()));
   CInvok->getFrontendOpts().Inputs.clear();
   CInvok->getFrontendOpts().Inputs.push_back(Input);
 
@@ -517,7 +518,8 @@ MigrationProcess::MigrationProcess(
 bool MigrationProcess::applyTransform(TransformFn trans,
                                       RewriteListener *listener) {
   std::unique_ptr<CompilerInvocation> CInvok;
-  CInvok.reset(createInvocationForMigration(OrigCI, *PCHContainerOps));
+  CInvok.reset(
+      createInvocationForMigration(OrigCI, PCHContainerOps->getRawReader()));
   CInvok->getDiagnosticOpts().IgnoreWarnings = true;
 
   Remapper.applyMappings(CInvok->getPreprocessorOpts());