http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53265
--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-03-14 09:13:45 UTC --- Author: jakub Date: Thu Mar 14 09:13:36 2013 New Revision: 196650 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196650 Log: PR tree-optimization/53265 * common.opt (Waggressive-loop-optimizations): New option. * tree-ssa-loop-niter.c: Include tree-pass.h. (do_warn_aggressive_loop_optimizations): New function. (record_estimate): Call it. Don't add !is_exit bounds to loop->bounds if number_of_latch_executions returned constant. (estimate_numbers_of_iterations_loop): Call number_of_latch_executions early. If number_of_latch_executions returned constant, set nb_iterations_upper_bound back to it. * cfgloop.h (struct loop): Add warned_aggressive_loop_optimizations field. * Makefile.in (tree-ssa-loop-niter.o): Depend on $(TREE_PASS_H). * doc/invoke.texi (-Wno-aggressive-loop-optimizations): Document. * gcc.dg/pr53265.c: New test. * gcc.dg/torture/pr49518.c: Add -Wno-aggressive-loop-optimizations to dg-options. * g++.dg/opt/longbranch2.C (EBCOTLut): Double sizes of a2 and a3 arrays. * gcc.dg/tree-ssa/cunroll-10.c (main): Rename to foo. Add argument n, use it as high bound instead of 4. * unwind-dw2.c (execute_cfa_program): Avoid -Waggressive-array-optimizations warnings for DW_CFA_GNU_window_save on targets with DWARF_FRAME_REGISTERS < 32. * testsuite/libmudflap.c/fail37-frag.c: Add optimization barrier. Added: trunk/gcc/testsuite/gcc.dg/pr53265.c Modified: trunk/gcc/ChangeLog trunk/gcc/Makefile.in trunk/gcc/cfgloop.h trunk/gcc/common.opt trunk/gcc/doc/invoke.texi trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/g++.dg/opt/longbranch2.C trunk/gcc/testsuite/gcc.dg/torture/pr49518.c trunk/gcc/testsuite/gcc.dg/tree-ssa/cunroll-10.c trunk/gcc/tree-ssa-loop-niter.c trunk/libgcc/ChangeLog trunk/libgcc/unwind-dw2.c trunk/libmudflap/ChangeLog trunk/libmudflap/testsuite/libmudflap.c/fail37-frag.c
