mirror of git://gcc.gnu.org/git/gcc.git
3b78393b39
This flag is set in a single context, namely semantic analysis of record
type definitions, to avoid generating spurious range checks from it, and
a large testing campaign showed that, in practice, it makes a difference
in a single case, namely an access-to-constrained-array component with a
default expression, for example:
type Acc_String is access all String (1 .. 100);
type Rec (D : Positive) is record
A : Acc_String := new String (1 .. D);
end record;
Now there is another mechanism implemented in Process_Range_Expr_In_Decl to
avoid generating spurious range checks, which does not work in this specific
case but can be made to work with a small tweak to Denotes_Discriminant.
gcc/ada/ChangeLog:
* checks.adb (Range_Checks_Suppressed): Remove test on the
Kill_Range_Checks flag.
* einfo.ads (Kill_Range_Checks): Delete.
* gen_il-fields.ads (Opt_Field_Enum): Remove Kill_Range_Checks.
* gen_il-gen-gen_entities.adb (Entity_Kind): Likewise.
* sem_ch3.adb (Record_Type_Declaration): Do not set the
Kill_Range_Checks flag.
* sem_util.adb (Denotes_Discriminant): In a default expression,
also return True for a discriminal.
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| .github | ||
| INSTALL | ||
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgm2 | ||
| libgo | ||
| libgomp | ||
| libgrust | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .b4-config | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| README | ||
| SECURITY.txt | ||
| ar-lib | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| symlink-tree | ||
| test-driver | ||
| ylwrap | ||
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.