[modules] Store a ModuleMacro* on an imported macro directive rather than duplicating the info within it.

llvm-svn: 235644

1 files changed, 19 insertions, 0 deletions

diff --git a/clang/lib/Lex/MacroInfo.cpp b/clang/lib/Lex/MacroInfo.cpp
index d7f483192f1..dbc804490b2 100644
--- a/clang/lib/Lex/MacroInfo.cpp
+++ b/clang/lib/Lex/MacroInfo.cpp
@@ -235,6 +235,25 @@ void MacroDirective::dump() const {
   Out << "\n";
 }
 
+DefMacroDirective *
+DefMacroDirective::createImported(Preprocessor &PP, MacroInfo *MI,
+                                  SourceLocation Loc,
+                                  ModuleMacro *ImportedFrom) {
+  void *Mem = PP.getPreprocessorAllocator().Allocate(
+      sizeof(DefMacroDirective) + sizeof(MacroDirective::ImportData),
+      llvm::alignOf<DefMacroDirective>());
+  return new (Mem) DefMacroDirective(MI, Loc, ImportedFrom);
+}
+
+UndefMacroDirective *
+UndefMacroDirective::createImported(Preprocessor &PP, SourceLocation Loc,
+                                    ModuleMacro *ImportedFrom) {
+  void *Mem = PP.getPreprocessorAllocator().Allocate(
+      sizeof(UndefMacroDirective) + sizeof(MacroDirective::ImportData),
+      llvm::alignOf<UndefMacroDirective>());
+  return new (Mem) UndefMacroDirective(Loc, ImportedFrom);
+}
+
 ModuleMacro *ModuleMacro::create(Preprocessor &PP, Module *OwningModule,
                                  IdentifierInfo *II, MacroInfo *Macro,
                                  ArrayRef<ModuleMacro *> Overrides) {