//
//===----------------------------------------------------------------------===//
+#ifndef CODEGEN_ASMPRINTER_DIEHASH_H__
+#define CODEGEN_ASMPRINTER_DIEHASH_H__
+
#include "DIE.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/MD5.h"
namespace llvm {
+class AsmPrinter;
class CompileUnit;
/// \brief An object containing the capability of hashing and adding hash
/// attributes onto a DIE.
class DIEHash {
+
// The entry for a particular attribute.
struct AttrEntry {
const DIEValue *Val;
};
public:
+ DIEHash(AsmPrinter *A = nullptr) : AP(A) {}
+
/// \brief Computes the ODR signature.
uint64_t computeDIEODRSignature(const DIE &Die);
void computeHash(const DIE &Die);
// Routines that add DIEValues to the hash.
-private:
+public:
+ /// \brief Adds \param Value to the hash.
+ void update(uint8_t Value) { Hash.update(Value); }
+
/// \brief Encodes and adds \param Value to the hash as a ULEB128.
void addULEB128(uint64_t Value);
/// \brief Encodes and adds \param Value to the hash as a SLEB128.
void addSLEB128(int64_t Value);
+private:
/// \brief Adds \param Str to the hash and includes a NULL byte.
void addString(StringRef Str);
/// \brief Hashes the attributes in \param Attrs in order.
void hashAttributes(const DIEAttrs &Attrs, dwarf::Tag Tag);
+ /// \brief Hashes the data in a block like DIEValue, e.g. DW_FORM_block or
+ /// DW_FORM_exprloc.
+ void hashBlockData(const SmallVectorImpl<DIEValue *> &Values);
+
+ /// \brief Hashes the contents pointed to in the .debug_loc section.
+ void hashLocList(const DIELocList &LocList);
+
/// \brief Hashes an individual attribute.
void hashAttribute(AttrEntry Attr, dwarf::Tag Tag);
private:
MD5 Hash;
+ AsmPrinter *AP;
DenseMap<const DIE *, unsigned> Numbering;
};
}
+
+#endif