return 0;
offset = INTVAL (XEXP (src, 1));
+ if (code == PLUS)
+ offset = -offset;
}
else if (GET_CODE (dest) == MEM)
{
src = XEXP (dest, 0);
code = GET_CODE (src);
- if ((code != PRE_DEC && code != PRE_INC && code != PRE_MODIFY)
- || XEXP (src, 0) != stack_pointer_rtx)
- return 0;
+ switch (code)
+ {
+ case PRE_MODIFY:
+ case POST_MODIFY:
+ if (XEXP (src, 0) == stack_pointer_rtx)
+ {
+ rtx val = XEXP (XEXP (src, 1), 1);
+ /* We handle only adjustments by constant amount. */
+ if (GET_CODE (XEXP (src, 1)) != PLUS ||
+ GET_CODE (val) != CONST_INT)
+ abort();
+ offset = -INTVAL (val);
+ break;
+ }
+ return 0;
- if (code == PRE_MODIFY)
- {
- rtx val = XEXP (XEXP (src, 1), 1);
+ case PRE_DEC:
+ case POST_DEC:
+ if (XEXP (src, 0) == stack_pointer_rtx)
+ {
+ offset = GET_MODE_SIZE (GET_MODE (dest));
+ break;
+ }
+ return 0;
- /* We handle only adjustments by constant amount. */
- if (GET_CODE (XEXP (src, 1)) != PLUS ||
- GET_CODE (val) != CONST_INT)
- abort ();
+ case PRE_INC:
+ case POST_INC:
+ if (XEXP (src, 0) == stack_pointer_rtx)
+ {
+ offset = -GET_MODE_SIZE (GET_MODE (dest));
+ break;
+ }
+ return 0;
- offset = -INTVAL (val);
+ default:
+ return 0;
}
- else
- offset = GET_MODE_SIZE (GET_MODE (dest));
}
else
return 0;
- if (code == PLUS || code == PRE_INC)
- offset = -offset;
-
return offset;
}
/* Information concerning the compilation unit's programming
language, and compiler version. */
-extern int flag_traditional;
-
/* Fixed size portion of the DWARF compilation unit header. */
#define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3)
#endif
#endif
-/* Define the architecture-dependent minimum instruction length (in bytes).
- In this implementation of DWARF, this field is used for information
- purposes only. Since GCC generates assembly language, we have
- no a priori knowledge of how many instruction bytes are generated
- for each source line, and therefore can use only the DW_LNE_set_address
- and DW_LNS_fixed_advance_pc line information commands.
- Accordingly, we define this as `1', which is "correct enough" for
- all architectures, and don't let the target override. */
-#define DWARF_LINE_MIN_INSTR_LENGTH 1
-
/* Minimum line offset in a special line info. opcode.
This value was chosen to give a reasonable range of values. */
#define DWARF_LINE_BASE -10
dw2_asm_output_delta (DWARF_OFFSET_SIZE, p2, p1, "Prolog Length");
ASM_OUTPUT_LABEL (asm_out_file, p1);
- dw2_asm_output_data (1, DWARF_LINE_MIN_INSTR_LENGTH,
+ /* Define the architecture-dependent minimum instruction length (in
+ bytes). In this implementation of DWARF, this field is used for
+ information purposes only. Since GCC generates assembly language,
+ we have no a priori knowledge of how many instruction bytes are
+ generated for each source line, and therefore can use only the
+ DW_LNE_set_address and DW_LNS_fixed_advance_pc line information
+ commands. Accordingly, we fix this as `1', which is "correct
+ enough" for all architectures, and don't let the target override. */
+ dw2_asm_output_data (1, 1,
"Minimum Instruction Length");
+
dw2_asm_output_data (1, DWARF_LINE_DEFAULT_IS_STMT_START,
"Default is_stmt_start flag");
dw2_asm_output_data (1, DWARF_LINE_BASE,
copy was created to help us keep track of typedef names) and
that copy might have a different TYPE_UID from the original
..._TYPE node. */
- mod_type_die = lookup_type_die (type_main_variant (type));
+ if (TREE_CODE (type) != VECTOR_TYPE)
+ mod_type_die = lookup_type_die (type_main_variant (type));
+ else
+ /* Vectors have the debugging information in the type,
+ not the main variant. */
+ mod_type_die = lookup_type_die (type);
if (mod_type_die == NULL)
abort ();
}
and will have been substituted directly into all expressions that use it.
C does not have such a concept, but C++ and other languages do. */
else if (TREE_CODE (decl) == VAR_DECL && DECL_INITIAL (decl))
- rtl = expand_expr (DECL_INITIAL (decl), NULL_RTX, VOIDmode,
- EXPAND_INITIALIZER);
+ {
+ /* If a variable is initialized with a string constant without embedded
+ zeros, build CONST_STRING. */
+ if (TREE_CODE (DECL_INITIAL (decl)) == STRING_CST
+ && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE)
+ {
+ tree arrtype = TREE_TYPE (decl);
+ tree enttype = TREE_TYPE (arrtype);
+ tree domain = TYPE_DOMAIN (arrtype);
+ tree init = DECL_INITIAL (decl);
+ enum machine_mode mode = TYPE_MODE (enttype);
+
+ if (GET_MODE_CLASS (mode) == MODE_INT && GET_MODE_SIZE (mode) == 1
+ && domain
+ && integer_zerop (TYPE_MIN_VALUE (domain))
+ && compare_tree_int (TYPE_MAX_VALUE (domain),
+ TREE_STRING_LENGTH (init) - 1) == 0
+ && ((size_t) TREE_STRING_LENGTH (init)
+ == strlen (TREE_STRING_POINTER (init)) + 1))
+ rtl = gen_rtx_CONST_STRING (VOIDmode, TREE_STRING_POINTER (init));
+ }
+
+ if (rtl == NULL)
+ {
+ rtl = expand_expr (DECL_INITIAL (decl), NULL_RTX, VOIDmode,
+ EXPAND_INITIALIZER);
+ /* If expand_expr returned a MEM, we cannot use it, since
+ it won't be output, leading to unresolved symbol. */
+ if (rtl && GET_CODE (rtl) == MEM)
+ rtl = NULL;
+ }
+ }
return rtl;
}
decls_for_scope (stmt, subr_die, depth);
current_function_has_inlines = 1;
}
+ else
+ /* We may get here if we're the outer block of function A that was
+ inlined into function B that was inlined into function C. When
+ generating debugging info for C, dwarf2out_abstract_function(B)
+ would mark all inlined blocks as abstract, including this one.
+ So, we wouldn't (and shouldn't) expect labels to be generated
+ for this one. Instead, just emit debugging info for
+ declarations within the block. This is particularly important
+ in the case of initializers of arguments passed from B to us:
+ if they're statement expressions containing declarations, we
+ wouldn't generate dies for their abstract variables, and then,
+ when generating dies for the real variables, we'd die (pun
+ intended :-) */
+ gen_lexical_block_die (stmt, context_die, depth);
}
/* Generate a DIE for a field in a record, or structure. */
language = DW_LANG_Pascal83;
else if (strcmp (language_string, "GNU Java") == 0)
language = DW_LANG_Java;
- else if (flag_traditional)
- language = DW_LANG_C;
else
language = DW_LANG_C89;
if (type == NULL_TREE || type == error_mark_node)
return;
- /* We are going to output a DIE to represent the unqualified version of
- this type (i.e. without any const or volatile qualifiers) so get the
- main variant (i.e. the unqualified version) of this type now. */
- type = type_main_variant (type);
+ /* We are going to output a DIE to represent the unqualified version
+ of this type (i.e. without any const or volatile qualifiers) so
+ get the main variant (i.e. the unqualified version) of this type
+ now. (Vectors are special because the debugging info is in the
+ cloned type itself). */
+ if (TREE_CODE (type) != VECTOR_TYPE)
+ type = type_main_variant (type);
if (TREE_ASM_WRITTEN (type))
return;
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