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Index: gcc/ChangeLog 

2007-10-09  Geoffrey Keating  <geoffk@apple.com>

	* dwarf2out.c (output_call_frame_info): FDEs are always emitted
	if flag_exceptions is not set.
	* config/darwin.c (darwin_emit_unwind_label): Rewrite to use
	assemble_name rather than incorrectly emulating it.

Index: gcc/testsuite/ChangeLog
2007-10-09  Geoffrey Keating  <geoffk@apple.com>

	* gcc.dg/unwind-1.c: New.

From-SVN: r129187
This commit is contained in:
Geoffrey Keating 2007-10-09 22:56:58 +00:00 committed by Geoffrey Keating
parent 32e26ecee6
commit c3b07ec29f
5 changed files with 36 additions and 27 deletions
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5
gcc/ChangeLog
View File

@ -1,5 +1,10 @@
2007-10-09 Geoffrey Keating <geoffk@apple.com>
* dwarf2out.c (output_call_frame_info): FDEs are always emitted
if flag_exceptions is not set.
* config/darwin.c (darwin_emit_unwind_label): Rewrite to use
assemble_name rather than incorrectly emulating it.
* doc/extend.texi (Deprecated Features): Mention that <? and >? and
friends are removed from G++.

46
gcc/config/darwin.c
View File

@ -1465,12 +1465,6 @@ darwin_handle_weak_import_attribute (tree *node, tree name,
return NULL_TREE;
}
static void
no_dead_strip (FILE *file, const char *lab)
{
fprintf (file, ".no_dead_strip %s\n", lab);
}
/* Emit a label for an FDE, making it global and/or weak if appropriate.
The third parameter is nonzero if this is for exception handling.
The fourth parameter is nonzero if this is just a placeholder for an
@ -1479,46 +1473,44 @@ no_dead_strip (FILE *file, const char *lab)
void
darwin_emit_unwind_label (FILE *file, tree decl, int for_eh, int empty)
{
const char *base;
char *lab;
bool need_quotes;
if (DECL_ASSEMBLER_NAME_SET_P (decl))
base = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
else
base = IDENTIFIER_POINTER (DECL_NAME (decl));
base = targetm.strip_name_encoding (base);
need_quotes = name_needs_quotes (base);
if (! for_eh)
return;
lab = concat (need_quotes ? "\"" : "", user_label_prefix, base, ".eh",
need_quotes ? "\"" : "", NULL);
lab = concat (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), ".eh", NULL);
if (TREE_PUBLIC (decl))
fprintf (file, "\t%s %s\n",
(DECL_VISIBILITY (decl) != VISIBILITY_HIDDEN
? ".globl"
: ".private_extern"),
lab);
{
targetm.asm_out.globalize_label (file, lab);
if (DECL_VISIBILITY (decl) == VISIBILITY_HIDDEN)
{
fputs ("\t.private_extern ", file);
assemble_name (file, lab);
fputc ('\n', file);
}
}
if (DECL_WEAK (decl))
fprintf (file, "\t.weak_definition %s\n", lab);
{
fputs ("\t.weak_definition ", file);
assemble_name (file, lab);
fputc ('\n', file);
}
assemble_name (file, lab);
if (empty)
{
fprintf (file, "%s = 0\n", lab);
fputs (" = 0\n", file);
/* Mark the absolute .eh and .eh1 style labels as needed to
ensure that we don't dead code strip them and keep such
labels from another instantiation point until we can fix this
properly with group comdat support. */
no_dead_strip (file, lab);
darwin_mark_decl_preserved (lab);
}
else
fprintf (file, "%s:\n", lab);
fputs (":\n", file);
free (lab);
}

1
gcc/dwarf2out.c
View File

@ -2223,6 +2223,7 @@ output_call_frame_info (int for_eh)
specialization doesn't. */
if (TARGET_USES_WEAK_UNWIND_INFO
&& ! flag_asynchronous_unwind_tables
&& flag_exceptions
&& for_eh)
for (i = 0; i < fde_table_in_use; i++)
if ((fde_table[i].nothrow || fde_table[i].all_throwers_are_sibcalls)

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2007-10-09 Geoffrey Keating <geoffk@apple.com>
* gcc.dg/unwind-1.c: New.
2007-10-09 Thomas Koenig <tkoenig@gcc.gnu.org>
PR libfortran/33683

7
gcc/testsuite/gcc.dg/unwind-1.c Normal file
View File

@ -0,0 +1,7 @@
/* { dg-do assemble } */
/* { dg-options "-fleading-underscore -funwind-tables" } */
void func(void) __asm("_func");
void _func(int x) {}
void func(void) {}