GCC modified for the FreeChainXenon project
f1af8528d3
This fixes the overflow issues seen with analyzing BASE0 + STEP0 cmp BASE1 + STEP1 as BASE0 + STEP0 - STEP1 cmp BASE1 by following the logic we have when simplifying comparisons. 2022-01-24 Richard Biener <rguenther@suse.de> Jiufu Guo <guojiufu@linux.ibm.com> PR tree-optimization/100740 PR tree-optimization/101508 PR tree-optimization/101972 PR tree-optimization/102131 * tree-ssa-loop-niter.cc (number_of_iterations_cond): Properly constrain BASE0 + STEP0 cmp BASE1 + STEP1 to BASE0 + STEP0 - STEP1 cmp BASE1 transform. * gcc.dg/torture/pr100740.c: New testcase. * gcc.dg/torture/pr101508.c: Likewise. * gcc.dg/torture/pr101972.c: Likewise. * gcc.dg/torture/pr102131-1.c: Likewise. * gcc.dg/torture/pr102131-2.c: Likewise. * gcc.dg/torture/pr102131-3.c: Likewise. * gcc.dg/torture/pr102131-4.c: Likewise. |
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| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcody | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
| libitm | ||
| libobjc | ||
| liboffloadmic | ||
| libphobos | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ar-lib | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| multilib.am | ||
| README | ||
| symlink-tree | ||
| test-driver | ||
| ylwrap | ||
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