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6e84a41622
After adding vn_valueize to the handle the `a | b ==/!= 0` case of insert_predicates_for_cond, it would go into an infinite loop as the Value number for either a or b could be the same as what it is for the whole expression. This avoids that recursion so there is no infinite loop here. Bootstrapped and tested on x86_64-linux. PR tree-optimization/117496 gcc/ChangeLog: * tree-ssa-sccvn.cc (insert_predicates_for_cond): If the valueization for the new lhs is the same as the old one, don't recurse. gcc/testsuite/ChangeLog: * gcc.dg/torture/pr117496-1.c: New test. Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com> |
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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.