[diagtool] Add 'show-enabled', which displays which warnings are enabled.

show-enabled uses the command line you give it to build a CompilerInstance,
so any flags you pass will be processed as if running clang proper.

llvm-svn: 157842

1 files changed, 3 insertions, 24 deletions

diff --git a/clang/tools/diagtool/ListWarnings.cpp b/clang/tools/diagtool/ListWarnings.cpp
index 2bbeca80249..6c59338eef1 100644
--- a/clang/tools/diagtool/ListWarnings.cpp
+++ b/clang/tools/diagtool/ListWarnings.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "DiagTool.h"
+#include "DiagnosticNames.h"
 #include "clang/Basic/Diagnostic.h"
 #include "llvm/Support/Format.h"
 #include "llvm/ADT/StringMap.h"
@@ -26,28 +27,6 @@ DEF_DIAGTOOL("list-warnings",
 using namespace clang;
 
 namespace {
-struct StaticDiagNameIndexRec {
-  const char *NameStr;
-  unsigned short DiagID;
-  uint8_t NameLen;
-
-  StringRef getName() const {
-    return StringRef(NameStr, NameLen);
-  }
-};
-}
-
-static const StaticDiagNameIndexRec StaticDiagNameIndex[] = {
-#define DIAG_NAME_INDEX(ENUM) { #ENUM, diag::ENUM, STR_SIZE(#ENUM, uint8_t) },
-#include "clang/Basic/DiagnosticIndexName.inc"
-#undef DIAG_NAME_INDEX
-  { 0, 0, 0 }
-};
-
-static const unsigned StaticDiagNameIndexSize =
-  sizeof(StaticDiagNameIndex)/sizeof(StaticDiagNameIndex[0])-1;
-
-namespace {
 struct Entry {
   llvm::StringRef DiagName;
   llvm::StringRef Flag;
@@ -73,8 +52,8 @@ int ListWarnings::run(unsigned int argc, char **argv, llvm::raw_ostream &out) {
   std::vector<Entry> Flagged, Unflagged;
   llvm::StringMap<std::vector<unsigned> > flagHistogram;
   
-  for (const StaticDiagNameIndexRec *di = StaticDiagNameIndex, *de = StaticDiagNameIndex + StaticDiagNameIndexSize;
-       di != de; ++di) {
+  for (const diagtool::DiagnosticRecord *di = diagtool::BuiltinDiagnostics,
+       *de = di + diagtool::BuiltinDiagnosticsCount; di != de; ++di) {
     
     unsigned diagID = di->DiagID;