Diagnostic for undefined assembler local symbols.

When an assembler local symbol is used but not defined in a module, a
Darwin assembler wants to issue a diagnostic to that effect.

rdar://9559714


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133010 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 1 deletions

diff --git a/include/llvm/MC/MCContext.h b/include/llvm/MC/MCContext.h
index 070089e2c9..43a9ce6cfa 100644
--- a/include/llvm/MC/MCContext.h
+++ b/include/llvm/MC/MCContext.h
@@ -39,6 +39,9 @@ namespace llvm {
   class MCContext {
     MCContext(const MCContext&); // DO NOT IMPLEMENT
     MCContext &operator=(const MCContext&); // DO NOT IMPLEMENT
+  public:
+    typedef StringMap<MCSymbol*, BumpPtrAllocator&> SymbolTable;
+  private:
 
     /// The MCAsmInfo for this target.
     const MCAsmInfo &MAI;
@@ -52,7 +55,7 @@ namespace llvm {
     BumpPtrAllocator Allocator;
 
     /// Symbols - Bindings of names to symbols.
-    StringMap<MCSymbol*, BumpPtrAllocator&> Symbols;
+    SymbolTable Symbols;
 
     /// UsedNames - Keeps tracks of names that were used both for used declared
     /// and artificial symbols.
@@ -142,6 +145,14 @@ namespace llvm {
     /// LookupSymbol - Get the symbol for \p Name, or null.
     MCSymbol *LookupSymbol(StringRef Name) const;
 
+    /// getSymbols - Get a reference for the symbol table for clients that
+    /// want to, for example, iterate over all symbols. 'const' because we
+    /// still want any modifications to the table itself to use the MCContext
+    /// APIs.
+    const SymbolTable &getSymbols() const {
+      return Symbols;
+    }
+
     /// @}
 
     /// @name Section Management