Skip to content
Snippets Groups Projects
user avatar
Andrew Pinski authored
This changes gimple_bitwise_inverted_equal_p to use a 2 different match patterns
to try to match bit_not wrapped with a possible nop_convert and a comparison
also wrapped with a possible nop_convert. This is to avoid being recursive.

OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions.

gcc/ChangeLog:

	PR tree-optimization/110874
	* gimple-match-head.cc (gimple_bit_not_with_nop): New declaration.
	(gimple_maybe_cmp): Likewise.
	(gimple_bitwise_inverted_equal_p): Rewrite to use gimple_bit_not_with_nop
	and gimple_maybe_cmp instead of being recursive.
	* match.pd (bit_not_with_nop): New match pattern.
	(maybe_cmp): Likewise.

gcc/testsuite/ChangeLog:

	PR tree-optimization/110874
	* gcc.c-torture/compile/pr110874-a.c: New test.
91c963ea
History
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.