mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-03-22 19:50:48 +08:00
f2a1b46987
PR middle-end/55079 * tree-ssa-loop-niter.c (number_of_iterations_exit): Update MAX field if NITER was folded to contant. (record_estimate): Sanity check. * tree-ssa-loop-ivcanon.c (remove_exits_and_undefined_stmts): New function. (remove_redundant_iv_test): New function. (loops_to_unloop, loops_to_unloop_nunroll): New static vars. (unloop_loops): Break out from ... (try_unroll_loop_completely): ... here; Pass in MAXITER; use remove_exits_and_undefined_stmts; do not unloop. (canonicalize_loop_induction_variables): Compute MAXITER; use remove_redundant_iv_test; remove loop_close_ssa_invalidated and irred_invalidated arguments. (canonicalize_induction_variables): Compute fresh bound estimates; unloop; walk from innermost. (tree_unroll_loops_completely): Likewise. * gcc.dg/tree-ssa/cunroll-10.c: New testcase. * gcc.dg/tree-ssa/cunroll-9.c: New testcase. From-SVN: r193098
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.