97602450b0
prune_runtime_alias_test_list swapped dr_as between two dr_with_seg_len pairs before finally deciding whether to merge them. Bailing out later would therefore leave the pairs in an incorrect state. IMO a better fix would be to split this out into a subroutine that produces a temporary dr_with_seg_len on success, rather than changing an existing one in-place. It would then be easy to merge both the dr_as and dr_bs if we wanted to, rather than requiring one of them to be equal. But here I tried to do something that could be backported if necessary. 2019-11-16 Richard Sandiford <richard.sandiford@arm.com> gcc/ * tree-data-ref.c (prune_runtime_alias_test_list): Delay swapping the dr_as based on init values until we've decided whether to merge them. From-SVN: r278349
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.