------- Comment #10 from borntraeger at de dot ibm dot com 2010-05-31 08:58 ------- Created an attachment (id=20783) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20783&action=view) experimental patch to have separate values for min_insn_to_prefetch_ration
Changpeng, thank you for the feedback. Can you confirm that the regression was introduced by a prefetch with an unknown step or is there still a bug in the calculation of the "normal" prefetches (e.g. by applying the first patch that disables non-constant steps) Anyway, here is a patch that increases min_insn_to_prefetch_ratio for non-constant steps. Does that make a difference for tonto? Do you prefer other intial values? Thanks Christian -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44297
