mirror of git://gcc.gnu.org/git/gcc.git
9e04a43012
Range bounds adjustments based on a bitmask were lazily set. This lead to some inconsitencies which were causing problems. Improve the bounds, and do it every time the bitmask is adjusted. PR tree-optimization/121468 PR tree-optimization/121206 PR tree-optimization/122200 gcc/ * value-range.cc (irange_bitmask::range_from_mask): New. (irange::snap): Add explicit overflow flag. (irange::snap_subranges): Use overflow flag. (irange::set_range_from_bitmask): Use range_from_mask. (test_irange_snap_bounds): Adjust for improved ranges. * value-range.h (irange::range_from_mask): Add prototype. (irange::snap): Adjust prototype. gcc/testsuite/ * gcc.dg/pr121468.c: New. * gcc.dg/pr122200.c: New. |
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| INSTALL | ||
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
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| include | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
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| ABOUT-NLS | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
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| ChangeLog | ||
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| MAINTAINERS | ||
| Makefile.def | ||
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| README | ||
| SECURITY.txt | ||
| ar-lib | ||
| compile | ||
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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.