svn commit: r258501 - in head/contrib: gcc gcc/cp gcc/doc gcclibs/libcpp gcclibs/libcpp/include libstdc++/include/ext
Pedro F. Giffuni
pfg at FreeBSD.org
Sat Nov 23 18:32:57 UTC 2013
Author: pfg
Date: Sat Nov 23 18:32:53 2013
New Revision: 258501
URL: http://svnweb.freebsd.org/changeset/base/258501
Log:
gcc: Bring updates from Google's enhanced gcc-4.2.1.
Google released and enhanced version of gcc-4.2.1 plus their local
patches for Android[1].
The patches are owned by Google and the license hasn't been changed
from the original GPLv2. We are only bringing a subset of the
available patches that may be helpful in FreeBSD. Changes specific
to android are not included.
From the README.google file[1].
Patches applied to google_vendor_src_branch/gcc/gcc-4.2.1:
gcc/Makefile.in
gcc/c-common.c
gcc/c-common.h
gcc/c-opts.c
gcc/c-typeck.c
gcc/cp/typeck.c
gcc/doc/invoke.texi
gcc/flags.h
gcc/opts.c
gcc/tree-flow.h
gcc/tree-ssa-alias-warnings.c
gcc/tree-ssa-alias.c
Backport of -Wstrict-aliasing from mainline.
Silvius Rus <rus at google.com>
gcc/coverage.c:
Patch coverage_checksum_string for PR 25351.
Seongbae Park <spark at google.com>
Not yet submitted to FSF.
gcc/c-opts.c
gcc/c-ppoutput.c
gcc/c.opt
gcc/doc/cppopts.texi
libcpp/Makefile.in
libcpp/directives-only.c
libcpp/directives.c
libcpp/files.c
libcpp/include/cpplib.h
libcpp/init.c
libcpp/internal.h
libcpp/macro.c
Support for -fdirectives-only.
Ollie Wild <aaw at google.com>.
Submitted to FSF but not yet approved.
libstdc++-v3/include/ext/hashtable.h
http://b/742065
http://b/629994
Reduce min size of hashtable for hash_map, hash_set from 53 to 5
libstdc++-v3/include/ext/hashtable.h
http://b/629994
Do not iterate over buckets if hashtable is empty.
gcc/common.opt
gcc/doc/invoke.texi
gcc/flags.h
gcc/gimplify.c
gcc/opts.c
Add Saito's patch for -finstrument-functions-exclude-* options.
gcc/common.opt
gcc/doc/invoke.texi
gcc/final.c
gcc/flags.h
gcc/opts.c
gcc/testsuite/gcc.dg/Wframe-larger-than.c
Add a new flag -Wframe-larger-than- which enables a new warning
when a frame size of a function is larger than specified.
This patch hasn't been integrated into gcc mainline yet.
gcc/tree-vrp.c
Add a hack to avoid using ivopts information for pointers starting
at constant values.
Reference:
[1]
https://android.googlesource.com/toolchain/gcc/+/master/gcc-4.2.1/
Obtained from: Google Inc.
MFC after: 3 weeks
Added:
head/contrib/gcc/tree-ssa-alias-warnings.c (contents, props changed)
head/contrib/gcclibs/libcpp/directives-only.c (contents, props changed)
Modified:
head/contrib/gcc/c-common.c
head/contrib/gcc/c-common.h
head/contrib/gcc/c-opts.c
head/contrib/gcc/c-ppoutput.c
head/contrib/gcc/c-typeck.c
head/contrib/gcc/c.opt
head/contrib/gcc/common.opt
head/contrib/gcc/coverage.c
head/contrib/gcc/cp/typeck.c
head/contrib/gcc/doc/cppopts.texi
head/contrib/gcc/doc/invoke.texi
head/contrib/gcc/final.c
head/contrib/gcc/flags.h
head/contrib/gcc/gimplify.c
head/contrib/gcc/opts.c
head/contrib/gcc/tree-flow.h
head/contrib/gcc/tree-ssa-alias.c
head/contrib/gcc/tree-vrp.c
head/contrib/gcclibs/libcpp/Makefile.in
head/contrib/gcclibs/libcpp/directives.c
head/contrib/gcclibs/libcpp/files.c
head/contrib/gcclibs/libcpp/include/cpplib.h
head/contrib/gcclibs/libcpp/init.c
head/contrib/gcclibs/libcpp/internal.h
head/contrib/gcclibs/libcpp/macro.c
head/contrib/libstdc++/include/ext/hashtable.h
Modified: head/contrib/gcc/c-common.c
==============================================================================
--- head/contrib/gcc/c-common.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/c-common.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -983,35 +983,67 @@ unsigned_conversion_warning (tree result
strict aliasing mode is in effect. OTYPE is the original
TREE_TYPE of EXPR, and TYPE the type we're casting to. */
-void
+bool
strict_aliasing_warning (tree otype, tree type, tree expr)
{
- if (flag_strict_aliasing && warn_strict_aliasing
- && POINTER_TYPE_P (type) && POINTER_TYPE_P (otype)
- && TREE_CODE (expr) == ADDR_EXPR
+ if (!(flag_strict_aliasing && POINTER_TYPE_P (type)
+ && POINTER_TYPE_P (otype) && !VOID_TYPE_P (TREE_TYPE (type))))
+ return false;
+
+ if ((warn_strict_aliasing > 1) && TREE_CODE (expr) == ADDR_EXPR
&& (DECL_P (TREE_OPERAND (expr, 0))
- || handled_component_p (TREE_OPERAND (expr, 0)))
- && !VOID_TYPE_P (TREE_TYPE (type)))
+ || handled_component_p (TREE_OPERAND (expr, 0))))
{
/* Casting the address of an object to non void pointer. Warn
if the cast breaks type based aliasing. */
- if (!COMPLETE_TYPE_P (TREE_TYPE (type)))
- warning (OPT_Wstrict_aliasing, "type-punning to incomplete type "
- "might break strict-aliasing rules");
+ if (!COMPLETE_TYPE_P (TREE_TYPE (type)) && warn_strict_aliasing == 2)
+ {
+ warning (OPT_Wstrict_aliasing, "type-punning to incomplete type "
+ "might break strict-aliasing rules");
+ return true;
+ }
else
{
- HOST_WIDE_INT set1 = get_alias_set (TREE_TYPE (TREE_OPERAND (expr, 0)));
+ /* warn_strict_aliasing >= 3. This includes the default (3).
+ Only warn if the cast is dereferenced immediately. */
+ HOST_WIDE_INT set1 =
+ get_alias_set (TREE_TYPE (TREE_OPERAND (expr, 0)));
HOST_WIDE_INT set2 = get_alias_set (TREE_TYPE (type));
if (!alias_sets_conflict_p (set1, set2))
- warning (OPT_Wstrict_aliasing, "dereferencing type-punned "
- "pointer will break strict-aliasing rules");
- else if (warn_strict_aliasing > 1
- && !alias_sets_might_conflict_p (set1, set2))
- warning (OPT_Wstrict_aliasing, "dereferencing type-punned "
- "pointer might break strict-aliasing rules");
+ {
+ warning (OPT_Wstrict_aliasing, "dereferencing type-punned "
+ "pointer will break strict-aliasing rules");
+ return true;
+ }
+ else if (warn_strict_aliasing == 2
+ && !alias_sets_might_conflict_p (set1, set2))
+ {
+ warning (OPT_Wstrict_aliasing, "dereferencing type-punned "
+ "pointer might break strict-aliasing rules");
+ return true;
+ }
}
}
+ else
+ if ((warn_strict_aliasing == 1) && !VOID_TYPE_P (TREE_TYPE (otype)))
+ {
+ /* At this level, warn for any conversions, even if an address is
+ not taken in the same statement. This will likely produce many
+ false positives, but could be useful to pinpoint problems that
+ are not revealed at higher levels. */
+ HOST_WIDE_INT set1 = get_alias_set (TREE_TYPE (otype));
+ HOST_WIDE_INT set2 = get_alias_set (TREE_TYPE (type));
+ if (!COMPLETE_TYPE_P(type)
+ || !alias_sets_might_conflict_p (set1, set2))
+ {
+ warning (OPT_Wstrict_aliasing, "dereferencing type-punned "
+ "pointer might break strict-aliasing rules");
+ return true;
+ }
+ }
+
+ return false;
}
@@ -3108,6 +3140,85 @@ def_fn_type (builtin_type def, builtin_t
builtin_types[def] = t;
}
+/* Build builtin functions common to both C and C++ language
+ frontends. */
+
+static void
+c_define_builtins (tree va_list_ref_type_node, tree va_list_arg_type_node)
+{
+#define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
+ builtin_types[ENUM] = VALUE;
+#define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
+ def_fn_type (ENUM, RETURN, 0, 0);
+#define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
+ def_fn_type (ENUM, RETURN, 0, 1, ARG1);
+#define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
+ def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+ def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
+ def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+ ARG6) \
+ def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
+#define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+ ARG6, ARG7) \
+ def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
+#define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
+ def_fn_type (ENUM, RETURN, 1, 0);
+#define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
+ def_fn_type (ENUM, RETURN, 1, 1, ARG1);
+#define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
+ def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+ def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
+ def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_POINTER_TYPE(ENUM, TYPE) \
+ builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]);
+
+#include "builtin-types.def"
+
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_5
+#undef DEF_FUNCTION_TYPE_6
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
+#undef DEF_FUNCTION_TYPE_VAR_4
+#undef DEF_FUNCTION_TYPE_VAR_5
+#undef DEF_POINTER_TYPE
+ builtin_types[(int) BT_LAST] = NULL_TREE;
+
+ c_init_attributes ();
+
+#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P, \
+ NONANSI_P, ATTRS, IMPLICIT, COND) \
+ if (NAME && COND) \
+ def_builtin_1 (ENUM, NAME, CLASS, \
+ builtin_types[(int) TYPE], \
+ builtin_types[(int) LIBTYPE], \
+ BOTH_P, FALLBACK_P, NONANSI_P, \
+ built_in_attributes[(int) ATTRS], IMPLICIT);
+#include "builtins.def"
+#undef DEF_BUILTIN
+
+ build_common_builtin_nodes ();
+
+ targetm.init_builtins ();
+ if (flag_mudflap)
+ mudflap_init ();
+}
+
/* Build tree nodes and builtin functions common to both C and C++ language
frontends. */
@@ -3320,77 +3431,8 @@ c_common_nodes_and_builtins (void)
va_list_ref_type_node = build_reference_type (va_list_type_node);
}
-#define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
- builtin_types[ENUM] = VALUE;
-#define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
- def_fn_type (ENUM, RETURN, 0, 0);
-#define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
- def_fn_type (ENUM, RETURN, 0, 1, ARG1);
-#define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
- def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
-#define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
- def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
-#define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
- def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4);
-#define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
- def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
-#define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
- ARG6) \
- def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
-#define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
- ARG6, ARG7) \
- def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
-#define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
- def_fn_type (ENUM, RETURN, 1, 0);
-#define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
- def_fn_type (ENUM, RETURN, 1, 1, ARG1);
-#define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
- def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
-#define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
- def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
-#define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
- def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4);
-#define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
- def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
-#define DEF_POINTER_TYPE(ENUM, TYPE) \
- builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]);
-
-#include "builtin-types.def"
-
-#undef DEF_PRIMITIVE_TYPE
-#undef DEF_FUNCTION_TYPE_1
-#undef DEF_FUNCTION_TYPE_2
-#undef DEF_FUNCTION_TYPE_3
-#undef DEF_FUNCTION_TYPE_4
-#undef DEF_FUNCTION_TYPE_5
-#undef DEF_FUNCTION_TYPE_6
-#undef DEF_FUNCTION_TYPE_VAR_0
-#undef DEF_FUNCTION_TYPE_VAR_1
-#undef DEF_FUNCTION_TYPE_VAR_2
-#undef DEF_FUNCTION_TYPE_VAR_3
-#undef DEF_FUNCTION_TYPE_VAR_4
-#undef DEF_FUNCTION_TYPE_VAR_5
-#undef DEF_POINTER_TYPE
- builtin_types[(int) BT_LAST] = NULL_TREE;
-
- c_init_attributes ();
-
-#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P, \
- NONANSI_P, ATTRS, IMPLICIT, COND) \
- if (NAME && COND) \
- def_builtin_1 (ENUM, NAME, CLASS, \
- builtin_types[(int) TYPE], \
- builtin_types[(int) LIBTYPE], \
- BOTH_P, FALLBACK_P, NONANSI_P, \
- built_in_attributes[(int) ATTRS], IMPLICIT);
-#include "builtins.def"
-#undef DEF_BUILTIN
-
- build_common_builtin_nodes ();
-
- targetm.init_builtins ();
- if (flag_mudflap)
- mudflap_init ();
+ if (!flag_preprocess_only)
+ c_define_builtins (va_list_ref_type_node, va_list_arg_type_node);
main_identifier_node = get_identifier ("main");
Modified: head/contrib/gcc/c-common.h
==============================================================================
--- head/contrib/gcc/c-common.h Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/c-common.h Sat Nov 23 18:32:53 2013 (r258501)
@@ -654,7 +654,7 @@ extern void binary_op_error (enum tree_c
extern tree fix_string_type (tree);
struct varray_head_tag;
extern void constant_expression_warning (tree);
-extern void strict_aliasing_warning(tree, tree, tree);
+extern bool strict_aliasing_warning (tree, tree, tree);
extern void empty_body_warning (tree, tree);
extern tree convert_and_check (tree, tree);
extern void overflow_warning (tree);
Modified: head/contrib/gcc/c-opts.c
==============================================================================
--- head/contrib/gcc/c-opts.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/c-opts.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -396,7 +396,7 @@ c_common_handle_option (size_t scode, co
if (c_dialect_cxx ())
warn_sign_compare = value;
warn_switch = value;
- warn_strict_aliasing = value;
+ set_warn_strict_aliasing (value);
warn_strict_overflow = value;
warn_address = value;
@@ -606,6 +606,10 @@ c_common_handle_option (size_t scode, co
disable_builtin_function (arg);
break;
+ case OPT_fdirectives_only:
+ cpp_opts->directives_only = 1;
+ break;
+
case OPT_fdollars_in_identifiers:
cpp_opts->dollars_in_ident = value;
break;
@@ -1329,6 +1333,11 @@ sanitize_cpp_opts (void)
if (flag_dump_macros == 'M')
flag_no_output = 1;
+ /* By default, -fdirectives-only implies -dD. This allows subsequent phases
+ to perform proper macro expansion. */
+ if (cpp_opts->directives_only && !cpp_opts->preprocessed && !flag_dump_macros)
+ flag_dump_macros = 'D';
+
/* Disable -dD, -dN and -dI if normal output is suppressed. Allow
-dM since at least glibc relies on -M -dM to work. */
/* Also, flag_no_output implies flag_no_line_commands, always. */
@@ -1359,6 +1368,14 @@ sanitize_cpp_opts (void)
actually output the current directory? */
if (flag_working_directory == -1)
flag_working_directory = (debug_info_level != DINFO_LEVEL_NONE);
+
+ if (cpp_opts->directives_only)
+ {
+ if (warn_unused_macros)
+ error ("-fdirectives-only is incompatible with -Wunused_macros");
+ if (cpp_opts->traditional)
+ error ("-fdirectives-only is incompatible with -traditional");
+ }
}
/* Add include path with a prefix at the front of its name. */
@@ -1442,6 +1459,8 @@ finish_options (void)
}
}
}
+ else if (cpp_opts->directives_only)
+ cpp_init_special_builtins (parse_in);
include_cursor = 0;
push_command_line_include ();
Modified: head/contrib/gcc/c-ppoutput.c
==============================================================================
--- head/contrib/gcc/c-ppoutput.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/c-ppoutput.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -41,6 +41,8 @@ static struct
/* General output routines. */
static void scan_translation_unit (cpp_reader *);
+static void print_lines_directives_only (int, const void *, size_t);
+static void scan_translation_unit_directives_only (cpp_reader *);
static void scan_translation_unit_trad (cpp_reader *);
static void account_for_newlines (const unsigned char *, size_t);
static int dump_macro (cpp_reader *, cpp_hashnode *, void *);
@@ -75,6 +77,9 @@ preprocess_file (cpp_reader *pfile)
}
else if (cpp_get_options (pfile)->traditional)
scan_translation_unit_trad (pfile);
+ else if (cpp_get_options (pfile)->directives_only
+ && !cpp_get_options (pfile)->preprocessed)
+ scan_translation_unit_directives_only (pfile);
else
scan_translation_unit (pfile);
@@ -179,6 +184,26 @@ scan_translation_unit (cpp_reader *pfile
}
}
+static void
+print_lines_directives_only (int lines, const void *buf, size_t size)
+{
+ print.src_line += lines;
+ fwrite (buf, 1, size, print.outf);
+}
+
+/* Writes out the preprocessed file, handling spacing and paste
+ avoidance issues. */
+static void
+scan_translation_unit_directives_only (cpp_reader *pfile)
+{
+ struct _cpp_dir_only_callbacks cb;
+
+ cb.print_lines = print_lines_directives_only;
+ cb.maybe_print_line = maybe_print_line;
+
+ _cpp_preprocess_dir_only (pfile, &cb);
+}
+
/* Adjust print.src_line for newlines embedded in output. */
static void
account_for_newlines (const unsigned char *str, size_t len)
Modified: head/contrib/gcc/c-typeck.c
==============================================================================
--- head/contrib/gcc/c-typeck.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/c-typeck.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -1876,6 +1876,19 @@ build_indirect_ref (tree ptr, const char
if (TREE_CODE (type) == POINTER_TYPE)
{
+ if (TREE_CODE (pointer) == CONVERT_EXPR
+ || TREE_CODE (pointer) == NOP_EXPR
+ || TREE_CODE (pointer) == VIEW_CONVERT_EXPR)
+ {
+ /* If a warning is issued, mark it to avoid duplicates from
+ the backend. This only needs to be done at
+ warn_strict_aliasing > 2. */
+ if (warn_strict_aliasing > 2)
+ if (strict_aliasing_warning (TREE_TYPE (TREE_OPERAND (pointer, 0)),
+ type, TREE_OPERAND (pointer, 0)))
+ TREE_NO_WARNING (pointer) = 1;
+ }
+
if (TREE_CODE (pointer) == ADDR_EXPR
&& (TREE_TYPE (TREE_OPERAND (pointer, 0))
== TREE_TYPE (type)))
@@ -3562,7 +3575,8 @@ build_c_cast (tree type, tree expr)
warning (OPT_Wint_to_pointer_cast, "cast to pointer from integer "
"of different size");
- strict_aliasing_warning (otype, type, expr);
+ if (warn_strict_aliasing <= 2)
+ strict_aliasing_warning (otype, type, expr);
/* If pedantic, warn for conversions between function and object
pointer types, except for converting a null pointer constant
Modified: head/contrib/gcc/c.opt
==============================================================================
--- head/contrib/gcc/c.opt Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/c.opt Sat Nov 23 18:32:53 2013 (r258501)
@@ -494,6 +494,10 @@ fdefault-inline
C++ ObjC++
Inline member functions by default
+fdirectives-only
+C ObjC C++ ObjC++
+Preprocess directives only.
+
fdollars-in-identifiers
C ObjC C++ ObjC++
Permit '$' as an identifier character
Modified: head/contrib/gcc/common.opt
==============================================================================
--- head/contrib/gcc/common.opt Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/common.opt Sat Nov 23 18:32:53 2013 (r258501)
@@ -95,7 +95,11 @@ Warn when an inlined function cannot be
Wlarger-than-
Common RejectNegative Joined UInteger
--Wlarger-than-<number> Warn if an object is larger than <number> bytes
+-Wlarger-than-<number> Warn if an object is larger than <number> bytes
+
+Wframe-larger-than-
+Common RejectNegative Joined UInteger
+-Wframe-larger-than-<number> Warn if the frame size of a function is larger than <number> bytes
Wunsafe-loop-optimizations
Common Var(warn_unsafe_loop_optimizations)
@@ -537,6 +541,14 @@ finstrument-functions
Common Report Var(flag_instrument_function_entry_exit)
Instrument function entry and exit with profiling calls
+finstrument-functions-exclude-function-list=
+Common RejectNegative Joined
+-finstrument-functions-exclude-function-list=name,... Do not instrument listed functions
+
+finstrument-functions-exclude-file-list=
+Common RejectNegative Joined
+-finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files
+
fipa-cp
Common Report Var(flag_ipa_cp)
Perform Interprocedural constant propagation
Modified: head/contrib/gcc/coverage.c
==============================================================================
--- head/contrib/gcc/coverage.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/coverage.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -429,57 +429,75 @@ tree_coverage_counter_ref (unsigned coun
static unsigned
coverage_checksum_string (unsigned chksum, const char *string)
{
- int i;
char *dup = NULL;
+ char *ptr;
/* Look for everything that looks if it were produced by
get_file_function_name and zero out the second part
that may result from flag_random_seed. This is not critical
as the checksums are used only for sanity checking. */
- for (i = 0; string[i]; i++)
+#define GLOBAL_PREFIX "_GLOBAL__"
+#define TRAILING_N "N_"
+#define ISCAPXDIGIT(a) (((a) >= '0' && (a) <= '9') || ((a) >= 'A' && (a) <= 'F'))
+ if ((ptr = strstr (string, GLOBAL_PREFIX)))
{
- int offset = 0;
- if (!strncmp (string + i, "_GLOBAL__N_", 11))
- offset = 11;
- if (!strncmp (string + i, "_GLOBAL__", 9))
- offset = 9;
-
- /* C++ namespaces do have scheme:
- _GLOBAL__N_<filename>_<wrongmagicnumber>_<magicnumber>functionname
- since filename might contain extra underscores there seems
- to be no better chance then walk all possible offsets looking
- for magicnuber. */
- if (offset)
- {
- for (i = i + offset; string[i]; i++)
- if (string[i]=='_')
- {
- int y;
-
- for (y = 1; y < 9; y++)
- if (!(string[i + y] >= '0' && string[i + y] <= '9')
- && !(string[i + y] >= 'A' && string[i + y] <= 'F'))
- break;
- if (y != 9 || string[i + 9] != '_')
- continue;
- for (y = 10; y < 18; y++)
- if (!(string[i + y] >= '0' && string[i + y] <= '9')
- && !(string[i + y] >= 'A' && string[i + y] <= 'F'))
- break;
- if (y != 18)
- continue;
- if (!dup)
- string = dup = xstrdup (string);
- for (y = 10; y < 18; y++)
- dup[i + y] = '0';
- }
- break;
- }
+ /* Skip _GLOBAL__. */
+ ptr += strlen (GLOBAL_PREFIX);
+
+ /* Skip optional N_ (in case __GLOBAL_N__). */
+ if (!strncmp (ptr, TRAILING_N, strlen (TRAILING_N)))
+ ptr += strlen (TRAILING_N);
+ /* At this point, ptr should point after "_GLOBAL__N_" or "_GLOBAL__". */
+
+ while ((ptr = strchr (ptr, '_')) != NULL)
+ {
+ int y;
+ /* For every "_" in the rest of the string,
+ try the follwing pattern matching */
+
+ /* Skip over '_'. */
+ ptr++;
+#define NDIGITS (8)
+ /* Try matching the pattern:
+ <8-digit hex>_<8-digit hex>
+ The second number is randomly generated
+ so we want to mask it out before computing the checksum. */
+ for (y = 0; *ptr != 0 && y < NDIGITS; y++, ptr++)
+ if (!ISCAPXDIGIT (*ptr))
+ break;
+ if (y != NDIGITS || *ptr != '_')
+ continue;
+ /* Skip over '_' again. */
+ ptr++;
+ for (y = 0; *ptr != 0 && y < NDIGITS; y++, ptr++)
+ if (!ISCAPXDIGIT (*ptr))
+ break;
+
+ if (y == NDIGITS)
+ {
+ /* We have a match.
+ Duplicate the string and mask out
+ the second 8-digit number. */
+ dup = xstrdup (string);
+ ptr = dup + (ptr - string);
+ for(y = -NDIGITS - 1 ; y < 0; y++)
+ {
+ ptr[y] = '0';
+ }
+ ptr = dup;
+ break;
+ }
+ }
+ /* "ptr" should be NULL if we couldn't find the match
+ (strchr will return NULL if no match is found),
+ or it should point to dup which contains the string
+ with the random part masked. */
}
- chksum = crc32_string (chksum, string);
+ chksum = crc32_string (chksum, (ptr) ? ptr : string);
+
if (dup)
- free (dup);
+ free (dup);
return chksum;
}
Modified: head/contrib/gcc/cp/typeck.c
==============================================================================
--- head/contrib/gcc/cp/typeck.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/cp/typeck.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -2334,6 +2334,19 @@ build_indirect_ref (tree ptr, const char
types. */
tree t = canonical_type_variant (TREE_TYPE (type));
+ if (TREE_CODE (ptr) == CONVERT_EXPR
+ || TREE_CODE (ptr) == NOP_EXPR
+ || TREE_CODE (ptr) == VIEW_CONVERT_EXPR)
+ {
+ /* If a warning is issued, mark it to avoid duplicates from
+ the backend. This only needs to be done at
+ warn_strict_aliasing > 2. */
+ if (warn_strict_aliasing > 2)
+ if (strict_aliasing_warning (TREE_TYPE (TREE_OPERAND (ptr, 0)),
+ type, TREE_OPERAND (ptr, 0)))
+ TREE_NO_WARNING (ptr) = 1;
+ }
+
if (VOID_TYPE_P (t))
{
/* A pointer to incomplete type (other than cv void) can be
@@ -5256,7 +5269,8 @@ build_reinterpret_cast_1 (tree type, tre
/* We need to strip nops here, because the frontend likes to
create (int *)&a for array-to-pointer decay, instead of &a[0]. */
STRIP_NOPS (sexpr);
- strict_aliasing_warning (intype, type, sexpr);
+ if (warn_strict_aliasing <= 2)
+ strict_aliasing_warning (intype, type, sexpr);
return fold_if_not_in_template (build_nop (type, expr));
}
Modified: head/contrib/gcc/doc/cppopts.texi
==============================================================================
--- head/contrib/gcc/doc/cppopts.texi Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/doc/cppopts.texi Sat Nov 23 18:32:53 2013 (r258501)
@@ -506,6 +506,22 @@ Search @var{dir} only for header files r
@xref{Search Path}.
@end ifset
+ at item -fdirectives-only
+ at opindex fdirectives-only
+This option provides a simplified preprocessor to improve the
+performance of distributed build systems such as distcc. It's
+behavior depends on a number of other flags.
+
+If the @option{-E} option is enabled, it suppresses things like macro
+expansion, trigraph conversion, and escaped newline splicing
+outside of directives. All directives are processed normally, except that
+macro definitions are output similar to the @option{-dD} option.
+
+If the @option{-fpreprocessed} option is enabled, it suppresses
+predefinition of most builtin and command line macros. This
+prevents duplicate definition of macros output with the @option{-E}
+option.
+
@item -fdollars-in-identifiers
@opindex fdollars-in-identifiers
@anchor{fdollars-in-identifiers}
Modified: head/contrib/gcc/doc/invoke.texi
==============================================================================
--- head/contrib/gcc/doc/invoke.texi Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/doc/invoke.texi Sat Nov 23 18:32:53 2013 (r258501)
@@ -214,7 +214,8 @@ in the following sections.
-Wimport -Wno-import -Winit-self -Winline @gol
-Wno-int-to-pointer-cast @gol
-Wno-invalid-offsetof -Winvalid-pch @gol
--Wlarger-than- at var{len} -Wunsafe-loop-optimizations -Wlong-long @gol
+-Wlarger-than- at var{len} -Wframe-larger-than- at var{len} @gol
+-Wunsafe-loop-optimizations -Wlong-long @gol
-Wmain -Wmissing-braces -Wmissing-field-initializers @gol
-Wmissing-format-attribute -Wmissing-include-dirs @gol
-Wmissing-noreturn @gol
@@ -758,6 +759,8 @@ See S/390 and zSeries Options.
-fnon-call-exceptions -funwind-tables @gol
-fasynchronous-unwind-tables @gol
-finhibit-size-directive -finstrument-functions @gol
+-finstrument-functions-exclude-function-list=@var{sym}, at var{sym}, at dots{} @gol
+-finstrument-functions-exclude-file-list=@var{file}, at var{file}, at dots{} @gol
-fno-common -fno-ident @gol
-fpcc-struct-return -fpic -fPIC -fpie -fPIE @gol
-fno-jump-tables @gol
@@ -2505,14 +2508,40 @@ It warns about code which might break th
compiler is using for optimization. The warning does not catch all
cases, but does attempt to catch the more common pitfalls. It is
included in @option{-Wall}.
+It is equivalent to -Wstrict-aliasing=3
- at item -Wstrict-aliasing=2
- at opindex Wstrict-aliasing=2
+ at item -Wstrict-aliasing=n
+ at opindex Wstrict-aliasing=n
This option is only active when @option{-fstrict-aliasing} is active.
It warns about code which might break the strict aliasing rules that the
-compiler is using for optimization. This warning catches more cases than
- at option{-Wstrict-aliasing}, but it will also give a warning for some ambiguous
-cases that are safe.
+compiler is using for optimization.
+Higher levels correspond to higher accuracy (fewer false positives).
+Higher levels also correspond to more effort, similar to the way -O works.
+ at option{-Wstrict-aliasing} is equivalent to @option{-Wstrict-aliasing=n},
+with n=3.
+
+Level 1: Most aggressive, quick, least accurate.
+Possibly useful when higher levels
+do not warn but -fstrict-aliasing still breaks the code, as it has very few
+false negatives. However, it has many false positives.
+Warns for all pointer conversions between possibly incompatible types,
+even if never dereferenced. Runs in the frontend only.
+
+Level 2: Aggressive, quick, not too precise.
+May still have many false positives (not as many as level 1 though),
+and few false negatives (but possibly more than level 1).
+Unlike level 1, it only warns when an address is taken. Warns about
+incomplete types. Runs in the frontend only.
+
+Level 3 (default for @option{-Wstrict-aliasing}):
+Should have very few false positives and few false
+negatives. Slightly slower than levels 1 or 2 when optimization is enabled.
+Takes care of the common punn+dereference pattern in the frontend:
+ at code{*(int*)&some_float}.
+If optimization is enabled, it also runs in the backend, where it deals
+with multiple statement cases using flow-sensitive points-to information.
+Only warns when the converted pointer is dereferenced.
+Does not warn about incomplete types.
@item -Wstrict-overflow
@item -Wstrict-overflow=@var{n}
@@ -2828,6 +2857,10 @@ global variable or whenever a built-in f
@opindex Wlarger-than
Warn whenever an object of larger than @var{len} bytes is defined.
+ at item -Wframe-larger-than- at var{len}
+ at opindex Wframe-larger-than
+Warn whenever the frame size of a function is larger than @var{len} bytes.
+
@item -Wunsafe-loop-optimizations
@opindex Wunsafe-loop-optimizations
Warn if the loop cannot be optimized because the compiler could not
@@ -13355,6 +13388,37 @@ interrupt routines, and any functions fr
cannot safely be called (perhaps signal handlers, if the profiling
routines generate output or allocate memory).
+ at item -finstrument-functions-exclude-file-list=@var{file}, at var{file}, at dots{}
+ at opindex finstrument-functions-exclude-file-list
+
+Set the list of functions that are excluded from instrumentation (see
+the description of @code{-finstrument-functions}). If the file that
+contains a function definition matches with one of @var{file}, then
+that function is not instrumented. The match is done on substrings:
+if the @var{file} parameter is a substring of the file name, it is
+considered to be a match.
+
+For example,
+ at code{-finstrument-functions-exclude-file-list=/bits/stl,include/sys}
+will exclude any inline function defined in files whose pathnames
+contain @code{/bits/stl} or @code{include/sys}.
+
+If, for some reason, you want to include letter @code{','} in one of
+ at var{sym}, write @code{'\,'}. For example,
+ at code{-finstrument-functions-exclude-file-list='\,\,tmp'}
+(note the single quote surrounding the option).
+
+ at item -finstrument-functions-exclude-function-list=@var{sym}, at var{sym}, at dots{}
+ at opindex finstrument-functions-exclude-function-list
+
+This is similar to @code{-finstrument-functions-exclude-file-list},
+but this option sets the list of function names to be excluded from
+instrumentation. The function name to be matched is its user-visible
+name, such as @code{vector<int> blah(const vector<int> &)}, not the
+internal mangled name (e.g., @code{_Z4blahRSt6vectorIiSaIiEE}). The
+match is done on substrings: if the @var{sym} parameter is a substring
+of the function name, it is considered to be a match.
+
@item -fstack-check
@opindex fstack-check
Generate code to verify that you do not go beyond the boundary of the
@@ -13932,3 +13996,4 @@ exist, because otherwise they won't get
@xref{Protoize Caveats}, for more information on how to use
@code{protoize} successfully.
+
Modified: head/contrib/gcc/final.c
==============================================================================
--- head/contrib/gcc/final.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/final.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -1425,6 +1425,15 @@ final_start_function (rtx first ATTRIBUT
TREE_ASM_WRITTEN (DECL_INITIAL (current_function_decl)) = 1;
}
+ if (warn_frame_larger_than
+ && get_frame_size () > frame_larger_than_size)
+ {
+ /* Issue a warning */
+ warning (OPT_Wframe_larger_than_,
+ "the frame size of %wd bytes is larger than %wd bytes",
+ get_frame_size (), frame_larger_than_size);
+ }
+
/* First output the function prologue: code to set up the stack frame. */
targetm.asm_out.function_prologue (file, get_frame_size ());
@@ -4083,4 +4092,3 @@ struct tree_opt_pass pass_clean_state =
0, /* todo_flags_finish */
0 /* letter */
};
-
Modified: head/contrib/gcc/flags.h
==============================================================================
--- head/contrib/gcc/flags.h Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/flags.h Sat Nov 23 18:32:53 2013 (r258501)
@@ -122,6 +122,15 @@ extern bool extra_warnings;
extern void set_Wunused (int setting);
+/* Used to set the level of -Wstrict-aliasing, when no level is specified.
+ The external way to set the default level is to use
+ -Wstrict-aliasing=level.
+ ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
+ and 0 otherwise. After calling this function, wstrict_aliasing will be
+ set to the default value of -Wstrict_aliasing=level. */
+
+extern void set_warn_strict_aliasing (int onoff);
+
/* Nonzero means warn about any objects definitions whose size is larger
than N bytes. Also want about function definitions whose returned
values are larger than N bytes. The value N is in `larger_than_size'. */
@@ -129,6 +138,12 @@ extern void set_Wunused (int setting);
extern bool warn_larger_than;
extern HOST_WIDE_INT larger_than_size;
+/* Nonzero means warn about any function whose frame size is larger
+ than N bytes. */
+
+extern bool warn_frame_larger_than;
+extern HOST_WIDE_INT frame_larger_than_size;
+
/* Nonzero means warn about constructs which might not be strict
aliasing safe. */
@@ -287,6 +302,10 @@ extern const char *flag_random_seed;
#define abi_version_at_least(N) \
(flag_abi_version == 0 || flag_abi_version >= (N))
+/* Return whether the function should be excluded from
+ instrumentation. */
+extern bool flag_instrument_functions_exclude_p (tree fndecl);
+
/* True if the given mode has a NaN representation and the treatment of
NaN operands is important. Certain optimizations, such as folding
x * 0 into 0, are not correct for NaN operands, and are normally
Modified: head/contrib/gcc/gimplify.c
==============================================================================
--- head/contrib/gcc/gimplify.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/gimplify.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -6397,7 +6397,8 @@ gimplify_function_tree (tree fndecl)
catch the exit hook. */
/* ??? Add some way to ignore exceptions for this TFE. */
if (flag_instrument_function_entry_exit
- && ! DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (fndecl))
+ && !DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (fndecl)
+ && !flag_instrument_functions_exclude_p (fndecl))
{
tree tf, x, bind;
Modified: head/contrib/gcc/opts.c
==============================================================================
--- head/contrib/gcc/opts.c Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/opts.c Sat Nov 23 18:32:53 2013 (r258501)
@@ -59,6 +59,11 @@ bool extra_warnings;
bool warn_larger_than;
HOST_WIDE_INT larger_than_size;
+/* True to warn about any function whose frame size is larger
+ * than N bytes. */
+bool warn_frame_larger_than;
+HOST_WIDE_INT frame_larger_than_size;
+
/* Nonzero means warn about constructs which might not be
strict-aliasing safe. */
int warn_strict_aliasing;
@@ -358,6 +363,15 @@ static bool flag_unroll_loops_set, flag_
static bool flag_value_profile_transformations_set;
static bool flag_peel_loops_set, flag_branch_probabilities_set;
+/* Functions excluded from profiling. */
+
+typedef char *char_p; /* For DEF_VEC_P. */
+DEF_VEC_P(char_p);
+DEF_VEC_ALLOC_P(char_p,heap);
+
+static VEC(char_p,heap) *flag_instrument_functions_exclude_functions;
+static VEC(char_p,heap) *flag_instrument_functions_exclude_files;
+
/* Input file names. */
const char **in_fnames;
unsigned num_in_fnames;
@@ -604,6 +618,87 @@ add_input_filename (const char *filename
in_fnames[num_in_fnames - 1] = filename;
}
+/* Add functions or file names to a vector of names to exclude from
+ instrumentation. */
+
+static void
+add_instrument_functions_exclude_list (VEC(char_p,heap) **pvec,
+ const char* arg)
+{
+ char *tmp;
+ char *r;
+ char *w;
+ char *token_start;
+
+ /* We never free this string. */
+ tmp = xstrdup (arg);
+
+ r = tmp;
+ w = tmp;
+ token_start = tmp;
+
+ while (*r != '\0')
+ {
+ if (*r == ',')
+ {
+ *w++ = '\0';
+ ++r;
+ VEC_safe_push (char_p, heap, *pvec, token_start);
+ token_start = w;
+ }
+ if (*r == '\\' && r[1] == ',')
+ {
+ *w++ = ',';
+ r += 2;
+ }
+ else
+ *w++ = *r++;
+ }
+ if (*token_start != '\0')
+ VEC_safe_push (char_p, heap, *pvec, token_start);
+}
+
+/* Return whether we should exclude FNDECL from instrumentation. */
+
+bool
+flag_instrument_functions_exclude_p (tree fndecl)
+{
+ if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0)
+ {
+ const char *name;
+ int i;
+ char *s;
+
+ name = lang_hooks.decl_printable_name (fndecl, 0);
+ for (i = 0;
+ VEC_iterate (char_p, flag_instrument_functions_exclude_functions,
+ i, s);
+ ++i)
+ {
+ if (strstr (name, s) != NULL)
+ return true;
+ }
+ }
+
+ if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0)
+ {
+ const char *name;
+ int i;
+ char *s;
+
+ name = DECL_SOURCE_FILE (fndecl);
+ for (i = 0;
+ VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s);
+ ++i)
+ {
+ if (strstr (name, s) != NULL)
+ return true;
+ }
+ }
+
+ return false;
+}
+
/* Decode and handle the vector of command line options. LANG_MASK
contains has a single bit set representing the current
language. */
@@ -979,7 +1074,15 @@ common_handle_option (size_t scode, cons
warn_larger_than = value != -1;
break;
+ case OPT_Wframe_larger_than_:
+ frame_larger_than_size = value;
+ warn_frame_larger_than = value != -1;
+ break;
+
case OPT_Wstrict_aliasing:
+ set_warn_strict_aliasing (value);
+ break;
+
case OPT_Wstrict_aliasing_:
warn_strict_aliasing = value;
break;
@@ -1086,6 +1189,16 @@ common_handle_option (size_t scode, cons
set_param_value ("max-inline-insns-auto", value / 2);
break;
+ case OPT_finstrument_functions_exclude_function_list_:
+ add_instrument_functions_exclude_list
+ (&flag_instrument_functions_exclude_functions, arg);
+ break;
+
+ case OPT_finstrument_functions_exclude_file_list_:
+ add_instrument_functions_exclude_list
+ (&flag_instrument_functions_exclude_files, arg);
+ break;
+
case OPT_fmessage_length_:
pp_set_line_maximum_length (global_dc->printer, value);
break;
@@ -1348,6 +1461,20 @@ set_Wunused (int setting)
warn_unused_value = setting;
}
+/* Used to set the level of strict aliasing warnings,
+ when no level is specified (i.e., when -Wstrict-aliasing, and not
+ -Wstrict-aliasing=level was given).
+ ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
+ and 0 otherwise. After calling this function, wstrict_aliasing will be
+ set to the default value of -Wstrict_aliasing=level, currently 3. */
+void
+set_warn_strict_aliasing (int onoff)
+{
+ gcc_assert (onoff == 0 || onoff == 1);
+ if (onoff != 0)
+ warn_strict_aliasing = 3;
+}
+
/* The following routines are useful in setting all the flags that
-ffast-math and -fno-fast-math imply. */
void
Modified: head/contrib/gcc/tree-flow.h
==============================================================================
--- head/contrib/gcc/tree-flow.h Sat Nov 23 17:20:24 2013 (r258500)
+++ head/contrib/gcc/tree-flow.h Sat Nov 23 18:32:53 2013 (r258501)
@@ -694,6 +694,8 @@ static inline bool overlap_subvar (unsig
definition, a function with this prototype is called. */
typedef bool (*walk_use_def_chains_fn) (tree, tree, void *);
+/* In tree-ssa-alias-warnings.c */
+extern void strict_aliasing_warning_backend (void);
/* In tree-ssa.c */
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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