Commit Graph

13 Commits

Author SHA1 Message Date
pfg
9c8bbe6849 gcc: Add support for Apple's Block extension
Block objects [1] are a C-level syntactic and runtime feature. They
are similar to standard C functions, but in addition to executable
code they may also contain variable bindings to automatic (stack)
or managed (heap) memory. A block can therefore maintain a set of
state (data) that it can use to impact behavior when executed.

This port is based on Apple's GCC 5646 with some bugfixes from
Apple GCC 5666.3. It has some small differences with the support
in clang, which remains the recommended compiler.

Perhaps the most notable difference is that in GCC that __block
is not actually a keyword, but a macro. There will be workaround
for this issue in a near future. Other issues can be consulted in
the clang documentation [2]

For better compatiblity with Apple's GCC and llvm-gcc some related
fixes and features from Apple have been included. Support for the
non-standard nested functions in GCC is now off by default.

No effort was made to update the ObjC support since FreeBSD doesn't
carry ObjC in the base system, but some of the code crept in and
was more difficult to remove than to adjust.

Reference:
[1]
https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Blocks/Articles/00_Introduction.html
[2]
http://clang.llvm.org/compatibility.html#block-variable-initialization

Obtained from:	Apple GCC 4.2
MFC after:	3 weeks
2014-01-05 00:43:28 +00:00
pfg
2993b5a095 gcc: Implement -Wmost for compatibility with clang.
This is equivalent to -Wall -Wno-parentheses.

Obtained from:	Apple GCC 4.2 - 5531
MFC after:	1 week
2013-12-26 18:09:16 +00:00
pfg
a90205432c gcc: add Apple compatible -Wnewline-eof
GCC 4.2 and previous have always warned about
"No newline at end of file".

Upstream GCC removed the warning completely but
Apple made it an optional warning. Adopt it for
compatibility with older GCC and clang.

While here, add comment to complement r258712.

Obtained from:	Apple Inc. (Apple GCC 4.2 - 5531)
MFC after:	1 week
2013-12-18 14:53:36 +00:00
pfg
af1fa864ed gcc: new fvisibility-ms-compat option
Obtained from:	gcc 4.3 (rev. 126088; GPLv2)
MFC after:	3 weeks
2013-12-08 03:02:44 +00:00
pfg
267b1cd42f gcc: Add -flax-vector-conversions
Obtained from:	gcc 4.3 (rev. 120572, 120688; GPLv2)
2013-12-05 21:22:51 +00:00
pfg
7aeb11f1db 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@google.com>

gcc/coverage.c:
  Patch coverage_checksum_string for PR 25351.
  Seongbae Park <spark@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@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
2013-11-23 18:32:53 +00:00
pfg
40ac8caa60 gcc: add femit-struct-debug support to reduce Reduce dwarf debug size
Obtained from:	gcc 4.3 (rev. 123909; GPLv2)
MFC after:	3 weeks
2013-11-16 01:16:24 +00:00
pfg
43666eab78 gcc: Add a new option -Wvla to warn variable length array.
Obtained from:	gcc 4.3 (rev. 122851; GPLv2)
MFC after:	3 weeks
2013-11-16 01:03:56 +00:00
uqs
0c741bc1ee - Fix typo in check_for_nested_with_variably_modified present
- Implement -Wvariable-decl.
- Port -Wtrampolines support from gcc3.
(all three also via OpenBSD)

PR:		gnu/127136, gnu/157019
Submitted by:	Henning Petersen, Pedro Giffuni
MFC after:	6 weeks
2011-07-01 20:45:55 +00:00
kan
cadd557b2c FreeBSD uses unchanged versions of this files. 2007-05-19 02:12:21 +00:00
kan
17d0aa6eb2 Merge conflicts for GCC 3.4.4. 2005-06-03 04:02:20 +00:00
kan
206c50d393 Allow GCC to recognize -fformat-extensions flag. 2004-07-29 02:04:58 +00:00
kan
5e00ec74d8 Gcc 3.4.2 20040728. 2004-07-28 03:11:36 +00:00