mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
15f387c93e
Worth 100k on a linux/x86_64 Release+Asserts clang. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190534 91177308-0d34-0410-b5e6-96231b3b80d8
126 lines
3.7 KiB
C++
126 lines
3.7 KiB
C++
//===-- llvm/CodeGen/DIEHash.h - Dwarf Hashing Framework -------*- C++ -*--===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains support for DWARF4 hashing of DIEs.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/MD5.h"
|
|
|
|
namespace llvm {
|
|
|
|
class CompileUnit;
|
|
|
|
/// \brief An object containing the capability of hashing and adding hash
|
|
/// attributes onto a DIE.
|
|
class LLVM_LIBRARY_VISIBILITY 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_accessibility;
|
|
AttrEntry DW_AT_address_class;
|
|
AttrEntry DW_AT_allocated;
|
|
AttrEntry DW_AT_artificial;
|
|
AttrEntry DW_AT_associated;
|
|
AttrEntry DW_AT_binary_scale;
|
|
AttrEntry DW_AT_bit_offset;
|
|
AttrEntry DW_AT_bit_size;
|
|
AttrEntry DW_AT_bit_stride;
|
|
AttrEntry DW_AT_byte_size;
|
|
AttrEntry DW_AT_byte_stride;
|
|
AttrEntry DW_AT_const_expr;
|
|
AttrEntry DW_AT_const_value;
|
|
AttrEntry DW_AT_containing_type;
|
|
AttrEntry DW_AT_count;
|
|
AttrEntry DW_AT_data_bit_offset;
|
|
AttrEntry DW_AT_data_location;
|
|
AttrEntry DW_AT_data_member_location;
|
|
AttrEntry DW_AT_decimal_scale;
|
|
AttrEntry DW_AT_decimal_sign;
|
|
AttrEntry DW_AT_default_value;
|
|
AttrEntry DW_AT_digit_count;
|
|
AttrEntry DW_AT_discr;
|
|
AttrEntry DW_AT_discr_list;
|
|
AttrEntry DW_AT_discr_value;
|
|
AttrEntry DW_AT_encoding;
|
|
AttrEntry DW_AT_enum_class;
|
|
AttrEntry DW_AT_endianity;
|
|
AttrEntry DW_AT_explicit;
|
|
AttrEntry DW_AT_is_optional;
|
|
AttrEntry DW_AT_location;
|
|
AttrEntry DW_AT_lower_bound;
|
|
AttrEntry DW_AT_mutable;
|
|
AttrEntry DW_AT_ordering;
|
|
AttrEntry DW_AT_picture_string;
|
|
AttrEntry DW_AT_prototyped;
|
|
AttrEntry DW_AT_small;
|
|
AttrEntry DW_AT_segment;
|
|
AttrEntry DW_AT_string_length;
|
|
AttrEntry DW_AT_threads_scaled;
|
|
AttrEntry DW_AT_upper_bound;
|
|
AttrEntry DW_AT_use_location;
|
|
AttrEntry DW_AT_use_UTF8;
|
|
AttrEntry DW_AT_variable_parameter;
|
|
AttrEntry DW_AT_virtuality;
|
|
AttrEntry DW_AT_visibility;
|
|
AttrEntry DW_AT_vtable_elem_location;
|
|
|
|
// Insert any additional ones here...
|
|
};
|
|
|
|
public:
|
|
/// \brief Computes the ODR signature.
|
|
uint64_t computeDIEODRSignature(DIE *Die);
|
|
|
|
/// \brief Computes the CU signature.
|
|
uint64_t computeCUSignature(DIE *Die);
|
|
|
|
/// \brief Computes the type signature.
|
|
uint64_t computeTypeSignature(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);
|
|
|
|
/// \brief Adds the attributes of \param Die to the hash.
|
|
void addAttributes(DIE *Die);
|
|
|
|
/// \brief Computes the full DWARF4 7.27 hash of the DIE.
|
|
void computeHash(DIE *Die);
|
|
|
|
// Routines that add DIEValues to the hash.
|
|
private:
|
|
/// \brief Encodes and adds \param Value to the hash as a ULEB128.
|
|
void addULEB128(uint64_t Value);
|
|
|
|
/// \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);
|
|
|
|
/// \brief Hashes the attributes in \param Attrs in order.
|
|
void hashAttributes(const DIEAttrs &Attrs);
|
|
|
|
/// \brief Hashes an individual attribute.
|
|
void hashAttribute(AttrEntry Attr);
|
|
|
|
private:
|
|
MD5 Hash;
|
|
};
|
|
}
|