http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43085
--- Comment #24 from Ulrich Weigand <uweigand at gcc dot gnu.org> 2011-05-02 14:06:52 UTC --- Author: uweigand Date: Mon May 2 14:06:48 2011 New Revision: 173252 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173252 Log: 2011-05-02 Ulrich Weigand <ulrich.weig...@linaro.org> PR middle-end/43085 Backport from mainline: 2010-04-29 Bernd Schmidt <ber...@codesourcery.com> From Dominique d'Humieres <domi...@lps.ens.fr> PR bootstrap/43858 * ifcvt.c (dead_or_predicable): Use df_simulate_find_defs to compute test_set. 2010-04-26 Bernd Schmidt <ber...@codesourcery.com> * df-problems.c (df_simulate_initialize_forwards): Set, don't clear, bits for artificial defs at the top of the block. * fwprop.c (single_def_use_enter_block): Don't call it. 2010-04-22 Bernd Schmidt <ber...@codesourcery.com> * ifcvt.c (dead_or_predicable): Use df_simulate_find_defs and df_simulate_find_noclobber_defs as appropriate. Keep track of an extra set merge_set_noclobber, and use it to relax the final test slightly. * df.h (df_simulate_find_noclobber_defs): Declare. * df-problems.c (df_simulate_find_defs): Don't ignore partial or conditional defs. (df_simulate_find_noclobber_defs): New function. Modified: branches/gcc-4_5-branch/gcc/ChangeLog branches/gcc-4_5-branch/gcc/df-problems.c branches/gcc-4_5-branch/gcc/df.h branches/gcc-4_5-branch/gcc/fwprop.c branches/gcc-4_5-branch/gcc/ifcvt.c
