[AsmParser][TableGen] Make the generated mnemonic spell checker function a file local static function.

Also only emit in targets that specificially request it. This is required so we don't get an unused static function error.

llvm-svn: 316640

1 files changed, 9 insertions, 3 deletions

diff --git a/llvm/utils/TableGen/AsmMatcherEmitter.cpp b/llvm/utils/TableGen/AsmMatcherEmitter.cpp
index fd1d7e0dba4..073513a2fe9 100644
--- a/llvm/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/llvm/utils/TableGen/AsmMatcherEmitter.cpp
@@ -2823,7 +2823,8 @@ static void emitCustomOperandParsing(raw_ostream &OS, CodeGenTarget &Target,
 
 static void emitMnemonicSpellChecker(raw_ostream &OS, CodeGenTarget &Target,
                                      unsigned VariantCount) {
-  OS << "std::string " << Target.getName() << "MnemonicSpellCheck(StringRef S, uint64_t FBS) {\n";
+  OS << "static std::string " << Target.getName()
+     << "MnemonicSpellCheck(StringRef S, uint64_t FBS) {\n";
   if (!VariantCount)
     OS <<  "  return \"\";";
   else {
@@ -3159,8 +3160,6 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
     OS << "};\n\n";
   }
 
-  emitMnemonicSpellChecker(OS, Target, VariantCount);
-
   OS << "#include \"llvm/Support/Debug.h\"\n";
   OS << "#include \"llvm/Support/Format.h\"\n\n";
 
@@ -3576,6 +3575,13 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
                              MaxMnemonicIndex, HasMnemonicFirst);
 
   OS << "#endif // GET_MATCHER_IMPLEMENTATION\n\n";
+
+  OS << "\n#ifdef GET_MNEMONIC_SPELL_CHECKER\n";
+  OS << "#undef GET_MNEMONIC_SPELL_CHECKER\n\n";
+
+  emitMnemonicSpellChecker(OS, Target, VariantCount);
+
+  OS << "#endif // GET_MNEMONIC_SPELL_CHECKER\n\n";
 }
 
 namespace llvm {