2012-02-06 Jakub Jelinek ja...@redhat.com
PR rtl-optimization/52060
* combine.c (try_combine): Add i0src_copy and i0src_copy2 variables,
copy i1src to i1src_copy whenever added_sets_2 i1_feeds_i2_n already
before i1dest - i1src substitution in newpat, copy i0src to
Hi!
combine_simplify_rtx and its helpers (called from subst) apparently modify
the given RTL in-place, there are many SUBST () calls all around those
functions. On the attached testcase in particular on arm when
newpat = subst (newpat, i1dest, i1src, 0, 0, 0); is called, force_to_mode
modifies
