Support: Stop stringifying DW_LANG_{lo,hi}_user

llvm-svn: 228451

2 files changed, 10 insertions, 2 deletions

diff --git a/llvm/lib/Support/Dwarf.cpp b/llvm/lib/Support/Dwarf.cpp
index 80dfd102317..8367473c728 100644
--- a/llvm/lib/Support/Dwarf.cpp
+++ b/llvm/lib/Support/Dwarf.cpp
@@ -507,9 +507,7 @@ const char *llvm::dwarf::LanguageString(unsigned Language) {
   case DW_LANG_C_plus_plus_03:           return "DW_LANG_C_plus_plus_03";
   case DW_LANG_C_plus_plus_11:           return "DW_LANG_C_plus_plus_11";
   case DW_LANG_OCaml:                    return "DW_LANG_OCaml";
-  case DW_LANG_lo_user:                  return "DW_LANG_lo_user";
   case DW_LANG_Mips_Assembler:           return "DW_LANG_Mips_Assembler";
-  case DW_LANG_hi_user:                  return "DW_LANG_hi_user";
   }
   return nullptr;
 }
diff --git a/llvm/unittests/Support/DwarfTest.cpp b/llvm/unittests/Support/DwarfTest.cpp
index d016aacedce..a1438205f73 100644
--- a/llvm/unittests/Support/DwarfTest.cpp
+++ b/llvm/unittests/Support/DwarfTest.cpp
@@ -42,4 +42,14 @@ TEST(DwarfTest, getTag) {
   EXPECT_EQ(DW_TAG_invalid, getTag("DW_TAG_user_base"));
 }
 
+TEST(DwarfTest, LanguageStringOnInvalid) {
+  // This is invalid, so it shouldn't be stringified.
+  EXPECT_EQ(nullptr, LanguageString(0));
+
+  // These aren't really tags: they describe ranges within tags.  They
+  // shouldn't be stringified either.
+  EXPECT_EQ(nullptr, LanguageString(DW_LANG_lo_user));
+  EXPECT_EQ(nullptr, LanguageString(DW_LANG_hi_user));
+}
+
 } // end namespace