when running in -E mode on multiple files, there is no reason to accumulate
fileid's and macroid's across files. Clearing between files keeps the tables
smaller and slightly speeds up compilation.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40383 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/clang.cpp b/Driver/clang.cpp
index 4ef7400..6016b9a 100644
--- a/Driver/clang.cpp
+++ b/Driver/clang.cpp
@@ -770,6 +770,7 @@
TextDiagnostics &OurDiagnosticClient,
HeaderSearch &HeaderInfo,
const LangOptions &LangInfo) {
+ bool ClearSourceMgr = false;
switch (ProgAction) {
default:
fprintf(stderr, "Unexpected program action!\n");
@@ -783,6 +784,7 @@
PP.DumpToken(Tok, true);
fprintf(stderr, "\n");
} while (Tok.getKind() != tok::eof);
+ ClearSourceMgr = true;
break;
}
case RunPreprocessorOnly: { // Just lex as fast as we can, no output.
@@ -792,19 +794,23 @@
do {
PP.Lex(Tok);
} while (Tok.getKind() != tok::eof);
+ ClearSourceMgr = true;
break;
}
case PrintPreprocessedInput: // -E mode.
DoPrintPreprocessedInput(MainFileID, PP, LangInfo);
+ ClearSourceMgr = true;
break;
case ParseNoop: // -parse-noop
ParseFile(PP, new MinimalAction(), MainFileID);
+ ClearSourceMgr = true;
break;
case ParsePrintCallbacks:
ParseFile(PP, CreatePrintParserActionsAction(), MainFileID);
+ ClearSourceMgr = true;
break;
case ParseSyntaxOnly: // -fsyntax-only
case ParseAST:
@@ -826,8 +832,17 @@
PP.PrintStats();
PP.getIdentifierTable().PrintStats();
HeaderInfo.PrintStats();
+ if (ClearSourceMgr)
+ SourceMgr.PrintStats();
fprintf(stderr, "\n");
}
+
+ // For a multi-file compilation, some things are ok with nuking the source
+ // manager tables, other require stable fileid/macroid's across multiple
+ // files.
+ if (ClearSourceMgr) {
+ SourceMgr.clearIDTables();
+ }
}
static llvm::cl::list<std::string>