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Bin Cheng 16ac9369b0 backport: re PR tree-optimization/81388 (Incorrect code generation with -O1) 
Backport from 2017-07-20 trunk r250384.

	PR tree-optimization/81388
	Revert r238585:
	2016-07-21  Bin Cheng  <bin.cheng@arm.com>

	* tree-ssa-loop-niter.c (number_of_iterations_lt_to_ne): Clean up
	by removing computation of may_be_zero.

	gcc/testsuite
	PR tree-optimization/81388
	* gcc.dg/tree-ssa/pr81388-1.c: New test.
	* gcc.dg/tree-ssa/pr81388-2.c: New test.

From-SVN: r250497
 		2017-07-25 08:56:26 +00:00
INSTALL README: Do not mention CVS. 2014-10-12 15:05:28 +00:00
config Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
contrib Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
fixincludes Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
gcc backport: re PR tree-optimization/81388 (Incorrect code generation with -O1) 2017-07-25 08:56:26 +00:00
gnattools Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
gotools Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
include Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
intl Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libada re PR ada/80921 (cross compiling fails to build Ada shared libraries) 2017-06-01 10:51:50 +00:00
libatomic Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libbacktrace Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libcc1 Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libcilkrts os-unix-sysdep.c (__cilkrts_getticks): Adjust preprocessor test for SPARC/Linux. 2017-06-23 17:34:21 +00:00
libcpp Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libdecnumber Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libffi Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libgcc backport: float128-ifunc.c: Don't include auxv.h. 2017-07-20 09:31:57 -05:00
libgfortran backport: re PR fortran/53029 (missed optimization in internal read (without implied-do-loop)) 2017-06-28 04:14:32 +00:00
libgo re PR go/81393 (Bootstrap failure on s390x-linux while building libgo against recent glibc) 2017-07-20 22:03:26 +00:00
libgomp re PR c++/81130 (ICE OpenMP shared clause in gimplify_var_or_parm_decl, at gimplify.c:2584) 2017-06-22 00:19:38 +02:00
libhsail-rt Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libiberty Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libitm Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libmpx Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libobjc Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
liboffloadmic Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libquadmath re PR libquadmath/65757 (gfortran gives incorrect result for anint with real*16 argument) 2017-07-20 10:29:45 +02:00
libsanitizer backport: re PR sanitizer/81066 (sanitizer_stoptheworld_linux_libcdep.cc:276:22: error: aggregate ‘sigaltstack handler_stack’ has incomplete type and cannot be defined) 2017-07-17 21:41:08 +02:00
libssp Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
libstdc++-v3 PR libstdc++/80316 make promise::set_value throw no_state error 2017-07-11 12:52:14 +01:00
libvtv Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
lto-plugin Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
maintainer-scripts gcc_release (XZ): Default to xz --best. 2017-05-23 23:14:37 +00:00
zlib Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
.dir-locals.el * .dir-locals.el: Add. 2013-10-16 18:25:31 +00:00
.gitattributes add basic .gitattributes files to notice whitespace issues 2016-04-23 02:37:43 +00:00
.gitignore .gitignore: Ignore in-tree prerequisites. 2016-09-09 17:20:55 -04:00
ABOUT-NLS
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COPYING
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COPYING.LIB
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COPYING.RUNTIME
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COPYING3
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COPYING3.LIB
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ChangeLog Update ChangeLog and version files for release 2017-05-02 12:42:24 +00:00
ChangeLog.jit Merger of dmalcolm/jit branch from git 2014-11-11 21:55:52 +00:00
ChangeLog.tree-ssa
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MAINTAINERS Add RISC-V Maintainers 2017-03-20 16:11:32 +00:00
Makefile.def re PR bootstrap/77661 (--enable-maintainer-mode causes in-tree-build of MPC to fail) 2017-04-19 18:49:29 +00:00
Makefile.in re PR bootstrap/77661 (--enable-maintainer-mode causes in-tree-build of MPC to fail) 2017-04-19 18:49:29 +00:00
Makefile.tpl Restore Graphite fuse-*.c testing 2017-02-15 15:43:42 +01:00
README
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compile Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
config-ml.in config-ml.in: Remove references to GCJ. 2016-11-15 16:34:02 +00:00
config.guess * config.guess: Import latest from upstream. 2017-03-18 18:22:06 +00:00
config.rpath
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config.sub * config.sub: Import latest version. 2016-12-29 22:04:53 +11:00
configure configure.ac: Enable LTO by default on darwin >= 9. 2017-03-22 17:51:18 +00:00
configure.ac configure.ac: Enable LTO by default on darwin >= 9. 2017-03-22 17:51:18 +00:00
depcomp Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
install-sh Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
libtool-ldflags re PR sanitizer/56781 (boostrap-asan failure: fixincl fails to link (missing -lasan)) 2014-04-17 14:23:28 +02:00
libtool.m4 * libtool.m4 (export_symbols_cmds) [AIX]: Add global TLS "L" symbols. 2015-11-26 08:20:59 -05:00
ltgcc.m4
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ltmain.sh Ensure libgcc_s unwinder is always used on 64-bit Solaris 10+/x86 (PR target/59788) 2014-02-04 09:31:38 +00:00
ltoptions.m4
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ltsugar.m4
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ltversion.m4
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lt~obsolete.m4
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missing Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
mkdep
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mkinstalldirs Update from upstream Automake files. 2014-11-16 14:07:13 +00:00
move-if-change Update move-if-change from gnulib 2014-11-16 16:12:44 +00:00
symlink-tree
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ylwrap Update from upstream Automake files. 2014-11-16 14:07:13 +00:00

README 

This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
names start with 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/ for how to report bugs usefully.

Copyright years on GCC source files may be listed using range
notation, e.g., 1987-2012, indicating that every year in the range,
inclusive, is a copyrightable year that could otherwise be listed
individually.