diff options
Diffstat (limited to 'gcc/tree-ssa-loop-prefetch.c')
| -rw-r--r-- | gcc/tree-ssa-loop-prefetch.c | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/gcc/tree-ssa-loop-prefetch.c b/gcc/tree-ssa-loop-prefetch.c index af89d70..2f10db1 100644 --- a/gcc/tree-ssa-loop-prefetch.c +++ b/gcc/tree-ssa-loop-prefetch.c @@ -992,32 +992,6 @@ prune_by_reuse (struct mem_ref_group *groups) static bool should_issue_prefetch_p (struct mem_ref *ref) { - /* Do we want to issue prefetches for non-constant strides? */ - if (!cst_and_fits_in_hwi (ref->group->step) && PREFETCH_DYNAMIC_STRIDES == 0) - { - if (dump_file && (dump_flags & TDF_DETAILS)) - fprintf (dump_file, - "Skipping non-constant step for reference %u:%u\n", - ref->group->uid, ref->uid); - return false; - } - - /* Some processors may have a hardware prefetcher that may conflict with - prefetch hints for a range of strides. Make sure we don't issue - prefetches for such cases if the stride is within this particular - range. */ - if (cst_and_fits_in_hwi (ref->group->step) - && absu_hwi (int_cst_value (ref->group->step)) < PREFETCH_MINIMUM_STRIDE) - { - if (dump_file && (dump_flags & TDF_DETAILS)) - fprintf (dump_file, - "Step for reference %u:%u (%d) is less than the mininum " - "required stride of %d\n", - ref->group->uid, ref->uid, int_cst_value (ref->group->step), - PREFETCH_MINIMUM_STRIDE); - return false; - } - /* For now do not issue prefetches for only first few of the iterations. */ if (ref->prefetch_before != PREFETCH_ALL) |