445cf5eb0d
libstdc++:
Add memory barriers to the double-checked locking used for static
initialization.
* libsupc++/guard.cc (__test_and_acquire): Define default.
(_GLIBCXX_GUARD_TEST_AND_ACQUIRE, __set_and_release)
(_GLIBCXX_GUARD_SET_AND_RELEASE): Likewise.
(recursion_push, recursion_pop): New abstraction functions.
(__cxa_guard_acquire): Use _GLIBCXX_GUARD_TEST_AND_ACQUIRE.
(__cxa_guard_release): Use _GLIBCXX_GUARD_SET_AND_RELEASE.
* config/cpu/generic/cxxabi_tweaks.h (_GLIBCXX_GUARD_TEST): Rename
from _GLIBCXX_GUARD_ACQUIRE and reverse sense.
(_GLIBCXX_GUARD_SET): Rename from _GLIBCXX_GUARD_RELEASE.
* config/cpu/arm/cxxabi_tweaks.h: Likewise.
* config/cpu/alpha/atomic_word.h (_GLIBCXX_READ_MEM_BARRIER)
(_GLIBCXX_WRITE_MEM_BARRIER): Define.
* config/cpu/powerpc/atomic_word.h: Likewise.
* config/cpu/sparc/atomic_word.h: Likewise.
* config/cpu/generic/atomic_word.h: Define them, commented out.
* include/bits/atomicity.h: Define defaults.
* config/cpu/ia64/atomic_word.h (__test_and_acquire)
(__set_and_release): New inlines.
(_GLIBCXX_GUARD_TEST_AND_ACQUIRE): Define.
(_GLIBCXX_GUARD_SET_AND_RELEASE): Define.
* libsupc++/guard.cc (acquire_1): Use __builtin_trap instead of
abort();
gcc:
* doc/tm.texi (TARGET_RELAXED_ORDERING): Document.
* target.h (struct gcc_target): Add relaxed_ordering field.
* target-def.h (TARGET_RELAXED_ORDERING): Define default.
(TARGET_INITIALIZER): Add it.
* config/alpha/alpha.c (TARGET_RELAXED_ORDERING): Define.
* config/ia64/ia64.c (TARGET_RELAXED_ORDERING): Define.
* config/rs6000/rs6000.c (TARGET_RELAXED_ORDERING): Define.
* config/sparc/sparc.c (TARGET_RELAXED_ORDERING): Define.
* cp/decl.c (expand_static_init): Don't use shortcut if
targetm.relaxed_ordering.
From-SVN: r92659
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|---|---|---|
| boehm-gc | ||
| config | ||
| contrib | ||
| fastjar | ||
| fixincludes | ||
| gcc | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libcpp | ||
| libffi | ||
| libgfortran | ||
| libiberty | ||
| libjava | ||
| libmudflap | ||
| libobjc | ||
| libstdc++-v3 | ||
| maintainer-scripts | ||
| zlib | ||
| .cvsignore | ||
| ABOUT-NLS | ||
| ChangeLog | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.in | ||
| COPYING | ||
| COPYING.LIB | ||
| depcomp | ||
| install-sh | ||
| libtool.m4 | ||
| ltcf-c.sh | ||
| ltcf-cxx.sh | ||
| ltcf-gcj.sh | ||
| ltconfig | ||
| ltmain.sh | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| README | ||
| README.SCO | ||
| symlink-tree | ||
| ylwrap | ||
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the file COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs.html for how to report bugs usefully.