------- Comment #9 from rakdver at gcc dot gnu dot org 2006-01-06 20:23 ------- Subject: Bug 18527
Author: rakdver Date: Fri Jan 6 20:22:56 2006 New Revision: 109427 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=109427 Log: PR tree-optimization/18527 * tree-ssa-loop-niter.c (number_of_iterations_cond, number_of_iterations_special, number_of_iterations_exit): Move base and step of an iv to a single structure. Add no_overflow flag, and use it in # of iterations analysis. * tree-scalar-evolution.c (analyze_scalar_evolution_in_loop): Add folded_casts argument. (simple_iv): Pass base and step in a structure. Set no_overflow flag. (scev_const_prop): Add argument to analyze_scalar_evolution_in_loop. Evaluate expensiveness of computing # of iterations instead of the final expression. * tree-scalar-evolution.h (affine_iv): New structure. (simple_iv): Declaration changed. * tree-chrec.c (chrec_apply): Handle chrecs containing symbols. * tree-ssa-loop-ivopts.c (determine_biv_step, find_givs_in_stmt_scev, find_givs_in_stmt): Changed due to simple_iv change. * gcc.dg/tree-ssa/loop-15.c: New test. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/loop-15.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-chrec.c trunk/gcc/tree-scalar-evolution.c trunk/gcc/tree-scalar-evolution.h trunk/gcc/tree-ssa-loop-ivopts.c trunk/gcc/tree-ssa-loop-niter.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18527
