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Re: [patch 4/4 v4] Allow loop prefetch code to speculatively prefetch non constant steps
On Wed, May 19, 2010 at 5:40 PM, Andreas Krebbel
<krebbel@linux.vnet.ibm.com> wrote:
> On 05/07/2010 10:04 PM, Christian Borntraeger wrote:
>>
>> 2010-05-07 ?Christian Borntraeger<borntraeger@de.ibm.com>
>>
>> ? ? ? ? * tree-ssa-loop-prefetch.c (mem_ref_group): Change step to tree.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (ar_data): Change step to tree.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (dump_mem_ref): Adopt debug code to
>> ? ? ? ? handle a tree as step. ?This also checks for a constant int vs.
>> ? ? ? ? non-constant but loop-invariant steps.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (find_or_create_group): Change the sort
>> ? ? ? ? algorithm to only consider steps that are constant ints.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (idx_analyze_ref): Adopt code to handle
>> ? ? ? ? a tree instead of a HOST_WIDE_INT for step.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (gather_memory_references_ref): Handle
>> ? ? ? ? tree instead of int and be prepared to see a NULL_TREE.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (prune_ref_by_self_reuse): Do not prune
>> ? ? ? ? prefetches if the step cannot be calculated at compile time.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (prune_ref_by_group_reuse): Do not
>> prune
>> ? ? ? ? prefetches if the step cannot be calculated at compile time.
>> ? ? ? ? * tree-ssa-loop-prefetch.c (issue_prefetch_ref): Issue prefetches
>> ? ? ? ? for non-constant but loop-invariant steps.
>
> Applied to mainline. Thanks!
>
This caused:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44203
--
H.J.