//===----------------------------------------------------------------------===//
#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
return false;
}
+const MCSymbol &MCSymbol::AliasedSymbol() const {
+ const MCSymbol *S = this;
+ while (S->isVariable()) {
+ const MCExpr *Value = S->getVariableValue();
+ if (Value->getKind() != MCExpr::SymbolRef)
+ return *S;
+ const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value);
+ S = &Ref->getSymbol();
+ }
+ return *S;
+}
+
+void MCSymbol::setVariableValue(const MCExpr *Value) {
+ assert(!IsUsed && "Cannot set a variable that has already been used.");
+ assert(Value && "Invalid variable value!");
+ assert((isUndefined() || (isAbsolute() && isa<MCConstantExpr>(Value))) &&
+ "Invalid redefinition!");
+ this->Value = Value;
+
+ // Mark the variable as absolute as appropriate.
+ if (isa<MCConstantExpr>(Value))
+ setAbsolute();
+}
+
void MCSymbol::print(raw_ostream &OS) const {
// The name for this MCSymbol is required to be a valid target name. However,
// some targets support quoting names with funny characters. If the name