[DebugInfo] Added support to Clang FE for generating debug info for preprocessor macros.
Added "-fdebug-macro" flag (and "-fno-debug-macro" flag) to enable (and to disable) emitting macro debug info.
Added CC1 "-debug-info-macro" flag that enables emitting macro debug info.
Differential Revision: https://reviews.llvm.org/D16135
llvm-svn: 294637
diff --git a/clang/lib/CodeGen/CodeGenAction.cpp b/clang/lib/CodeGen/CodeGenAction.cpp
index 3828c5e..89a7c7c 100644
--- a/clang/lib/CodeGen/CodeGenAction.cpp
+++ b/clang/lib/CodeGen/CodeGenAction.cpp
@@ -10,6 +10,7 @@
#include "clang/CodeGen/CodeGenAction.h"
#include "CodeGenModule.h"
#include "CoverageMappingGen.h"
+#include "MacroPPCallbacks.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclCXX.h"
@@ -97,6 +98,8 @@
return std::unique_ptr<llvm::Module>(Gen->ReleaseModule());
}
+ CodeGenerator *getCodeGenerator() { return Gen.get(); }
+
void HandleCXXStaticMemberVarInstantiation(VarDecl *VD) override {
Gen->HandleCXXStaticMemberVarInstantiation(VD);
}
@@ -830,6 +833,17 @@
CI.getLangOpts(), CI.getFrontendOpts().ShowTimers, InFile,
std::move(LinkModules), std::move(OS), *VMContext, CoverageInfo));
BEConsumer = Result.get();
+
+ // Enable generating macro debug info only when debug info is not disabled and
+ // also macro debug info is enabled.
+ if (CI.getCodeGenOpts().getDebugInfo() != codegenoptions::NoDebugInfo &&
+ CI.getCodeGenOpts().MacroDebugInfo) {
+ std::unique_ptr<PPCallbacks> Callbacks =
+ llvm::make_unique<MacroPPCallbacks>(BEConsumer->getCodeGenerator(),
+ CI.getPreprocessor());
+ CI.getPreprocessor().addPPCallbacks(std::move(Callbacks));
+ }
+
return std::move(Result);
}