Record a symbol's size which is needed for ELF symbol tables.

llvm-svn: 111170

include/llvm/MC/MCAssembler.h

@@ -24,6 +24,7 @@ namespace llvm {
 class raw_ostream;
 class MCAsmLayout;
 class MCAssembler;
+class MCBinaryExpr;
 class MCContext;
 class MCCodeEmitter;
 class MCExpr;
@@ -453,6 +454,10 @@ public:
   // common symbol can never get a definition.
   uint64_t CommonSize;
 
+  /// SymbolSize - An expression describing how to calculate the size of
+  /// a symbol. If a symbol has no size this field will be NULL.
+  const MCExpr *SymbolSize;
+
   /// CommonAlign - The alignment of the symbol, if it is 'common'.
   //
   // FIXME: Pack this in with other fields?
@@ -510,6 +515,15 @@ public:
     return CommonSize;
   }
 
+  void setSize(const MCExpr *SS) {
+    SymbolSize = SS;
+  }
+
+  const MCExpr *getSize() const {
+    return SymbolSize;
+  }
+
+
   /// getCommonAlignment - Return the alignment of a 'common' symbol.
   unsigned getCommonAlignment() const {
     assert(isCommon() && "Not a 'common' symbol!");

lib/MC/MCAssembler.cpp

@@ -211,7 +211,8 @@ MCSymbolData::MCSymbolData(const MCSymbol &_Symbol, MCFragment *_Fragment,
                            uint64_t _Offset, MCAssembler *A)
   : Symbol(&_Symbol), Fragment(_Fragment), Offset(_Offset),
     IsExternal(false), IsPrivateExtern(false),
-    CommonSize(0), CommonAlign(0), Flags(0), Index(0)
+    CommonSize(0), SymbolSize(0), CommonAlign(0),
+    Flags(0), Index(0)
 {
   if (A)
     A->getSymbolList().push_back(this);