[preprocessor] Add an opportunity to retain excluded conditional blocks
It is handy for clang tooling, for instance, in source to source transformation.
Reviewers: vpykhtin (Valery Pykhtin), erichkeane (Erich Keane)
Subscribers: rsmith (Richard Smith), akyrtzi (Argyrios Kyrtzidis)
Tags: #clang
Differential Revision: https://reviews.llvm.org/D66597
llvm-svn: 370123
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index ac6e6b6..35348ff 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -1735,6 +1735,7 @@
bool CacheCodeCompletionResults, bool IncludeBriefCommentsInCodeCompletion,
bool AllowPCHWithCompilerErrors, SkipFunctionBodiesScope SkipFunctionBodies,
bool SingleFileParse, bool UserFilesAreVolatile, bool ForSerialization,
+ bool RetainExcludedConditionalBlocks,
llvm::Optional<StringRef> ModuleFormat, std::unique_ptr<ASTUnit> *ErrAST,
IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS) {
assert(Diags.get() && "no DiagnosticsEngine was provided");
@@ -1762,6 +1763,7 @@
PPOpts.RemappedFilesKeepOriginalName = RemappedFilesKeepOriginalName;
PPOpts.AllowPCHWithCompilerErrors = AllowPCHWithCompilerErrors;
PPOpts.SingleFileParseMode = SingleFileParse;
+ PPOpts.RetainExcludedConditionalBlocks = RetainExcludedConditionalBlocks;
// Override the resources path.
CI->getHeaderSearchOpts().ResourceDir = ResourceFilesPath;