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2a2e678407
r0-126134-g5d2a9da9a7f7c1 added support for circuiting and combing the ifs into using either AND or OR. But it only allowed the inner condition basic block having the conditional only. This changes to allow up to 2 defining statements as long as they are just integer to integer conversions for either the lhs or rhs of the conditional. This should allow to use ccmp on aarch64 and x86_64 (APX) slightly more than before. Boootstrapped and tested on x86_64-linux-gnu. PR tree-optimization/85605 gcc/ChangeLog: * tree-ssa-ifcombine.cc (can_combine_bbs_with_short_circuit): New function. (ifcombine_ifandif): Use can_combine_bbs_with_short_circuit instead of checking if iterator is one before the last statement. gcc/testsuite/ChangeLog: * g++.dg/tree-ssa/ifcombine-ccmp-1.C: New test. * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-7.c: New test. * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-8.c: New test. * gcc.dg/tree-ssa/ssa-ifcombine-ccmp-9.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.