Bitcode: Remove the remnants of the BitcodeDiagnosticInfo class.

The BitcodeReader no longer produces BitcodeDiagnosticInfo diagnostics.
The only remaining reference was in the gold plugin; the code there has been
dead since we stopped producing InvalidBitcodeSignature error codes in r225562.
While at it remove the InvalidBitcodeSignature error code.

llvm-svn: 286326

4 files changed, 1 insertions, 25 deletions

diff --git a/llvm/include/llvm/Bitcode/ReaderWriter.h b/llvm/include/llvm/Bitcode/ReaderWriter.h
index 38a7be8538a..adea682d90a 100644
--- a/llvm/include/llvm/Bitcode/ReaderWriter.h
+++ b/llvm/include/llvm/Bitcode/ReaderWriter.h
@@ -184,26 +184,11 @@ namespace llvm {
   }
 
   const std::error_category &BitcodeErrorCategory();
-  enum class BitcodeError { InvalidBitcodeSignature = 1, CorruptedBitcode };
+  enum class BitcodeError { CorruptedBitcode = 1 };
   inline std::error_code make_error_code(BitcodeError E) {
     return std::error_code(static_cast<int>(E), BitcodeErrorCategory());
   }
 
-  class BitcodeDiagnosticInfo : public DiagnosticInfo {
-    const Twine &Msg;
-    std::error_code EC;
-
-  public:
-    BitcodeDiagnosticInfo(std::error_code EC, DiagnosticSeverity Severity,
-                          const Twine &Msg);
-    void print(DiagnosticPrinter &DP) const override;
-    std::error_code getError() const { return EC; }
-
-    static bool classof(const DiagnosticInfo *DI) {
-      return DI->getKind() == DK_Bitcode;
-    }
-  };
-
 } // End llvm namespace
 
 namespace std {
diff --git a/llvm/include/llvm/IR/DiagnosticInfo.h b/llvm/include/llvm/IR/DiagnosticInfo.h
index 4951e94419a..3a2e789257f 100644
--- a/llvm/include/llvm/IR/DiagnosticInfo.h
+++ b/llvm/include/llvm/IR/DiagnosticInfo.h
@@ -49,7 +49,6 @@ enum DiagnosticSeverity : char {
 /// \brief Defines the different supported kind of a diagnostic.
 /// This enum should be extended with a new ID for each added concrete subclass.
 enum DiagnosticKind {
-  DK_Bitcode,
   DK_InlineAsm,
   DK_ResourceLimit,
   DK_StackSize,
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 7a5fb8be2e0..dad56f12e1c 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -6621,8 +6621,6 @@ class BitcodeErrorCategoryType : public std::error_category {
   std::string message(int IE) const override {
     BitcodeError E = static_cast<BitcodeError>(IE);
     switch (E) {
-    case BitcodeError::InvalidBitcodeSignature:
-      return "Invalid bitcode signature";
     case BitcodeError::CorruptedBitcode:
       return "Corrupted bitcode";
     }
diff --git a/llvm/tools/gold/gold-plugin.cpp b/llvm/tools/gold/gold-plugin.cpp
index 7c5d48144b2..22386780be9 100644
--- a/llvm/tools/gold/gold-plugin.cpp
+++ b/llvm/tools/gold/gold-plugin.cpp
@@ -368,12 +368,6 @@ ld_plugin_status onload(ld_plugin_tv *tv) {
 }
 
 static void diagnosticHandler(const DiagnosticInfo &DI) {
-  if (const auto *BDI = dyn_cast<BitcodeDiagnosticInfo>(&DI)) {
-    std::error_code EC = BDI->getError();
-    if (EC == BitcodeError::InvalidBitcodeSignature)
-      return;
-  }
-
   std::string ErrStorage;
   {
     raw_string_ostream OS(ErrStorage);