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dwarf2out.c (output_compilation_unit_header): For -gdwarf-4 use version 4 instead of version 3.
* dwarf2out.c (output_compilation_unit_header): For -gdwarf-4 use version 4 instead of version 3. (output_line_info): For version 4 and above emit additional maximum ops per insn header field. (DWARF_LINE_DEFAULT_MAX_OPS_PER_INSN): Define. * dwarf2out.c (is_c_family, is_java): Remove. (lower_bound_default): New function. (add_bound_info, gen_descr_array_type_die): Use it. From-SVN: r157930
This commit is contained in:
Jakub Jelinek
Jakub Jelinek
parent
777351a5fd
commit
2f43d500a6
@ -1,3 +1,15 @@
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2010-04-01 Jakub Jelinek <jakub@redhat.com>
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* dwarf2out.c (output_compilation_unit_header): For
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-gdwarf-4 use version 4 instead of version 3.
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(output_line_info): For version 4 and above emit additional
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maximum ops per insn header field.
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(DWARF_LINE_DEFAULT_MAX_OPS_PER_INSN): Define.
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* dwarf2out.c (is_c_family, is_java): Remove.
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(lower_bound_default): New function.
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(add_bound_info, gen_descr_array_type_die): Use it.
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2010-04-01 Dodji Seketeli <dodji@redhat.com>
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PR debug/43325
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@ -5689,6 +5689,11 @@ skeleton_chain_node;
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is not made available by the GCC front-end. */
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#define DWARF_LINE_DEFAULT_IS_STMT_START 1
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/* Maximum number of operations per instruction bundle. */
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#ifndef DWARF_LINE_DEFAULT_MAX_OPS_PER_INSN
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#define DWARF_LINE_DEFAULT_MAX_OPS_PER_INSN 1
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#endif
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#ifdef DWARF2_DEBUGGING_INFO
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/* This location is used by calc_die_sizes() to keep track
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the offset of each DIE within the .debug_info section. */
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@ -5964,9 +5969,7 @@ static const char *get_AT_string (dw_die_ref, enum dwarf_attribute);
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static int get_AT_flag (dw_die_ref, enum dwarf_attribute);
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static unsigned get_AT_unsigned (dw_die_ref, enum dwarf_attribute);
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static inline dw_die_ref get_AT_ref (dw_die_ref, enum dwarf_attribute);
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static bool is_c_family (void);
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static bool is_cxx (void);
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static bool is_java (void);
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static bool is_fortran (void);
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static bool is_ada (void);
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static void remove_AT (dw_die_ref, enum dwarf_attribute);
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@ -7443,18 +7446,6 @@ get_AT_file (dw_die_ref die, enum dwarf_attribute attr_kind)
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return a ? AT_file (a) : NULL;
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}
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/* Return TRUE if the language is C or C++. */
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static inline bool
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is_c_family (void)
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{
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unsigned int lang = get_AT_unsigned (comp_unit_die, DW_AT_language);
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return (lang == DW_LANG_C || lang == DW_LANG_C89 || lang == DW_LANG_ObjC
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|| lang == DW_LANG_C99
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|| lang == DW_LANG_C_plus_plus || lang == DW_LANG_ObjC_plus_plus);
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}
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/* Return TRUE if the language is C++. */
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static inline bool
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@ -7477,16 +7468,6 @@ is_fortran (void)
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|| lang == DW_LANG_Fortran95);
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}
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/* Return TRUE if the language is Java. */
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static inline bool
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is_java (void)
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{
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unsigned int lang = get_AT_unsigned (comp_unit_die, DW_AT_language);
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return lang == DW_LANG_Java;
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}
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/* Return TRUE if the language is Ada. */
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static inline bool
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@ -10687,11 +10668,6 @@ output_compilation_unit_header (void)
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{
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int ver = dwarf_version;
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/* Don't mark the output as DWARF-4 until we make full use of the
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version 4 extensions, and gdb supports them. For now, -gdwarf-4
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selects only a few extensions from the DWARF-4 spec. */
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if (ver > 3)
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ver = 3;
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if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4)
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dw2_asm_output_data (4, 0xffffffff,
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"Initial length escape value indicating 64-bit DWARF extension");
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@ -11538,12 +11514,6 @@ output_line_info (void)
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unsigned long function;
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int ver = dwarf_version;
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/* Don't mark the output as DWARF-4 until we make full use of the
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version 4 extensions, and gdb supports them. For now, -gdwarf-4
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selects only a few extensions from the DWARF-4 spec. */
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if (ver > 3)
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ver = 3;
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ASM_GENERATE_INTERNAL_LABEL (l1, LINE_NUMBER_BEGIN_LABEL, 0);
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ASM_GENERATE_INTERNAL_LABEL (l2, LINE_NUMBER_END_LABEL, 0);
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ASM_GENERATE_INTERNAL_LABEL (p1, LN_PROLOG_AS_LABEL, 0);
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@ -11571,6 +11541,9 @@ output_line_info (void)
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dw2_asm_output_data (1, 1,
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"Minimum Instruction Length");
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if (ver >= 4)
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dw2_asm_output_data (1, DWARF_LINE_DEFAULT_MAX_OPS_PER_INSN,
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"Maximum Operations Per Instruction");
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dw2_asm_output_data (1, DWARF_LINE_DEFAULT_IS_STMT_START,
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"Default is_stmt_start flag");
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dw2_asm_output_data (1, DWARF_LINE_BASE,
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@ -16339,6 +16312,42 @@ add_comp_dir_attribute (dw_die_ref die)
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add_AT_string (die, DW_AT_comp_dir, remap_debug_filename (wd));
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}
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/* Return the default for DW_AT_lower_bound, or -1 if there is not any
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default. */
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static int
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lower_bound_default (void)
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{
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switch (get_AT_unsigned (comp_unit_die, DW_AT_language))
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{
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case DW_LANG_C:
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case DW_LANG_C89:
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case DW_LANG_C99:
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case DW_LANG_C_plus_plus:
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case DW_LANG_ObjC:
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case DW_LANG_ObjC_plus_plus:
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case DW_LANG_Java:
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return 0;
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case DW_LANG_Fortran77:
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case DW_LANG_Fortran90:
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case DW_LANG_Fortran95:
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return 1;
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case DW_LANG_UPC:
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case DW_LANG_D:
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return dwarf_version >= 4 ? 0 : -1;
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case DW_LANG_Ada95:
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case DW_LANG_Ada83:
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case DW_LANG_Cobol74:
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case DW_LANG_Cobol85:
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case DW_LANG_Pascal83:
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case DW_LANG_Modula2:
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case DW_LANG_PLI:
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return dwarf_version >= 4 ? 1 : -1;
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default:
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return -1;
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}
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}
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/* Given a tree node describing an array bound (either lower or upper) output
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a representation for that bound. */
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@ -16356,11 +16365,13 @@ add_bound_info (dw_die_ref subrange_die, enum dwarf_attribute bound_attr, tree b
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case INTEGER_CST:
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{
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unsigned int prec = simple_type_size_in_bits (TREE_TYPE (bound));
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int dflt;
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/* Use the default if possible. */
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if (bound_attr == DW_AT_lower_bound
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&& (((is_c_family () || is_java ()) && integer_zerop (bound))
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|| (is_fortran () && integer_onep (bound))))
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&& host_integerp (bound, 0)
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&& (dflt = lower_bound_default ()) != -1
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&& tree_low_cst (bound, 0) == dflt)
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;
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/* Otherwise represent the bound as an unsigned value with the
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@ -17261,11 +17272,11 @@ gen_descr_array_type_die (tree type, struct array_descr_info *info,
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if (info->dimen[dim].lower_bound)
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{
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/* If it is the default value, omit it. */
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if ((is_c_family () || is_java ())
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&& integer_zerop (info->dimen[dim].lower_bound))
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;
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else if (is_fortran ()
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&& integer_onep (info->dimen[dim].lower_bound))
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int dflt;
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if (host_integerp (info->dimen[dim].lower_bound, 0)
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&& (dflt = lower_bound_default ()) != -1
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&& tree_low_cst (info->dimen[dim].lower_bound, 0) == dflt)
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;
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else
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add_descr_info_field (subrange_die, DW_AT_lower_bound,
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