X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAsmPrinter%2FDIEHash.h;h=1850e042f924b7ae29fe9c66903572dfd4d9ac19;hb=b4863a99c98e7cecd9dcc13397abeb453854a2d5;hp=d83f78f68b48f1959697ec5a7a7f72fd3f54a65d;hpb=7ced4fa25778d646b29e1fb92ef8de01d279e57a;p=oota-llvm.git

diff --git a/lib/CodeGen/AsmPrinter/DIEHash.h b/lib/CodeGen/AsmPrinter/DIEHash.h
index d83f78f68b4..1850e042f92 100644
--- a/lib/CodeGen/AsmPrinter/DIEHash.h
+++ b/lib/CodeGen/AsmPrinter/DIEHash.h
@@ -11,64 +11,152 @@
 //
 //===----------------------------------------------------------------------===//
 
+#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DIEHASH_H
+#define LLVM_LIB_CODEGEN_ASMPRINTER_DIEHASH_H
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/CodeGen/DIE.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;
-    const DIEAbbrevData *Desc;
-  };
-
   // Collection of all attributes used in hashing a particular DIE.
   struct DIEAttrs {
-    AttrEntry DW_AT_name;
-    AttrEntry DW_AT_language;
+    DIEValue DW_AT_name;
+    DIEValue DW_AT_accessibility;
+    DIEValue DW_AT_address_class;
+    DIEValue DW_AT_allocated;
+    DIEValue DW_AT_artificial;
+    DIEValue DW_AT_associated;
+    DIEValue DW_AT_binary_scale;
+    DIEValue DW_AT_bit_offset;
+    DIEValue DW_AT_bit_size;
+    DIEValue DW_AT_bit_stride;
+    DIEValue DW_AT_byte_size;
+    DIEValue DW_AT_byte_stride;
+    DIEValue DW_AT_const_expr;
+    DIEValue DW_AT_const_value;
+    DIEValue DW_AT_containing_type;
+    DIEValue DW_AT_count;
+    DIEValue DW_AT_data_bit_offset;
+    DIEValue DW_AT_data_location;
+    DIEValue DW_AT_data_member_location;
+    DIEValue DW_AT_decimal_scale;
+    DIEValue DW_AT_decimal_sign;
+    DIEValue DW_AT_default_value;
+    DIEValue DW_AT_digit_count;
+    DIEValue DW_AT_discr;
+    DIEValue DW_AT_discr_list;
+    DIEValue DW_AT_discr_value;
+    DIEValue DW_AT_encoding;
+    DIEValue DW_AT_enum_class;
+    DIEValue DW_AT_endianity;
+    DIEValue DW_AT_explicit;
+    DIEValue DW_AT_is_optional;
+    DIEValue DW_AT_location;
+    DIEValue DW_AT_lower_bound;
+    DIEValue DW_AT_mutable;
+    DIEValue DW_AT_ordering;
+    DIEValue DW_AT_picture_string;
+    DIEValue DW_AT_prototyped;
+    DIEValue DW_AT_small;
+    DIEValue DW_AT_segment;
+    DIEValue DW_AT_string_length;
+    DIEValue DW_AT_threads_scaled;
+    DIEValue DW_AT_upper_bound;
+    DIEValue DW_AT_use_location;
+    DIEValue DW_AT_use_UTF8;
+    DIEValue DW_AT_variable_parameter;
+    DIEValue DW_AT_virtuality;
+    DIEValue DW_AT_visibility;
+    DIEValue DW_AT_vtable_elem_location;
+    DIEValue DW_AT_type;
+
+    // Insert any additional ones here...
   };
 
 public:
-  /// \brief Computes the ODR signature
-  uint64_t computeDIEODRSignature(DIE *Die);
+  DIEHash(AsmPrinter *A = nullptr) : AP(A) {}
+
+  /// \brief Computes the ODR signature.
+  uint64_t computeDIEODRSignature(const DIE &Die);
+
+  /// \brief Computes the CU signature.
+  uint64_t computeCUSignature(const DIE &Die);
 
-  /// \brief Computes the CU signature
-  uint64_t computeCUSignature(DIE *Die);
+  /// \brief Computes the type signature.
+  uint64_t computeTypeSignature(const DIE &Die);
 
   // Helper routines to process parts of a DIE.
 private:
   /// \brief Adds the parent context of \param Die to the hash.
-  void addParentContext(DIE *Die);
+  void addParentContext(const DIE &Die);
 
   /// \brief Adds the attributes of \param Die to the hash.
-  void addAttributes(DIE *Die);
+  void addAttributes(const DIE &Die);
 
   /// \brief Computes the full DWARF4 7.27 hash of the DIE.
-  void computeHash(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 Collects the attributes of DIE \param Die into the \param Attrs
   /// structure.
-  void collectAttributes(DIE *Die, DIEAttrs &Attrs);
+  void collectAttributes(const DIE &Die, DIEAttrs &Attrs);
 
   /// \brief Hashes the attributes in \param Attrs in order.
-  void hashAttributes(const DIEAttrs &Attrs);
+  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 DIE::value_range &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);
+  void hashAttribute(DIEValue Value, dwarf::Tag Tag);
+
+  /// \brief Hashes an attribute that refers to another DIE.
+  void hashDIEEntry(dwarf::Attribute Attribute, dwarf::Tag Tag,
+                    const DIE &Entry);
+
+  /// \brief Hashes a reference to a named type in such a way that is
+  /// independent of whether that type is described by a declaration or a
+  /// definition.
+  void hashShallowTypeReference(dwarf::Attribute Attribute, const DIE &Entry,
+                                StringRef Name);
+
+  /// \brief Hashes a reference to a previously referenced type DIE.
+  void hashRepeatedTypeReference(dwarf::Attribute Attribute,
+                                 unsigned DieNumber);
+
+  void hashNestedType(const DIE &Die, StringRef Name);
 
 private:
   MD5 Hash;
+  AsmPrinter *AP;
+  DenseMap<const DIE *, unsigned> Numbering;
 };
 }
+
+#endif