db34470d17
Dwarakanath Rajagopal <dwarak.rajagopal@amd.com>
* tree-ssa-loop-prefetch.c
(gather_memory_references): Introduced a counter for the number of
memory references.
(anything_to_prefetch_p): Introduced a counter for the number of
prefetches.
(is_loop_prefetching_profitable): New function with a cost model
for prefetching.
(loop_prefetch_arrays): Use the new cost model to determine if
prefetching is profitable.
* params.def (MIN_INSN_TO_PREFETCH_RATIO,
PREFETCH_MIN_INSN_TO_MEM_RATIO): New parameters.
* params.h (MIN_INSN_TO_PREFETCH_RATIO,
PREFETCH_MIN_INSN_TO_MEM_RATIO): New parameters.
* doc/invoke.texi (MIN_INSN_TO_PREFETCH_RATIO,
PREFETCH_MIN_INSN_TO_MEM_RATIO): New parameters.
Co-Authored-By: Dwarakanath Rajagopal <dwarak.rajagopal@amd.com>
From-SVN: r148277
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| config | ||
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