mirror of git://gcc.gnu.org/git/gcc.git
422 lines
13 KiB
C++
422 lines
13 KiB
C++
/*
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Copyright (c) 2014-2016 Intel Corporation. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cean_util.h"
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#include "offload_common.h"
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// 1. allocate element of CeanReadRanges type
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// 2. initialized it for reading consequently contiguous ranges
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// described by "ap" argument
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CeanReadRanges * init_read_ranges_arr_desc(const Arr_Desc *ap)
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{
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CeanReadRanges * res;
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// find the max contiguous range
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int64_t rank = ap->rank - 1;
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int64_t length = ap->dim[rank].size;
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for (; rank >= 0; rank--) {
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if (ap->dim[rank].stride == 1) {
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length *= (ap->dim[rank].upper - ap->dim[rank].lower + 1);
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if (rank > 0 && length != ap->dim[rank - 1].size) {
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break;
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}
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}
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else {
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break;
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}
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}
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res =(CeanReadRanges *)malloc(sizeof(CeanReadRanges) +
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(ap->rank - rank) * sizeof(CeanReadDim));
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if (res == NULL)
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LIBOFFLOAD_ERROR(c_malloc);
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res->arr_desc = const_cast<Arr_Desc*>(ap);
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res->current_number = 0;
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res->range_size = length;
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res->last_noncont_ind = rank;
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// calculate number of contiguous ranges inside noncontiguous dimensions
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int count = 1;
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bool prev_is_cont = true;
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int64_t offset = 0;
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for (; rank >= 0; rank--) {
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res->Dim[rank].count = count;
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res->Dim[rank].size = ap->dim[rank].stride * ap->dim[rank].size;
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count *= (prev_is_cont && ap->dim[rank].stride == 1? 1 :
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(ap->dim[rank].upper - ap->dim[rank].lower +
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ap->dim[rank].stride) / ap->dim[rank].stride);
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prev_is_cont = false;
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offset +=(ap->dim[rank].lower - ap->dim[rank].lindex) *
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ap->dim[rank].size;
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}
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res->range_max_number = count;
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res -> ptr = (void*)ap->base;
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res -> init_offset = offset;
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return res;
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}
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// check if ranges described by 1 argument could be transferred into ranges
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// described by 2-nd one
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bool cean_ranges_match(
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CeanReadRanges * read_rng1,
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CeanReadRanges * read_rng2
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)
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{
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return ( read_rng1 == NULL || read_rng2 == NULL ||
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(read_rng1->range_size % read_rng2->range_size == 0 ||
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read_rng2->range_size % read_rng1->range_size == 0));
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}
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// Set next offset and length and returns true for next range.
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// Returns false if the ranges are over.
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bool get_next_range(
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CeanReadRanges * read_rng,
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int64_t *offset
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)
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{
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if (++read_rng->current_number > read_rng->range_max_number) {
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read_rng->current_number = 0;
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return false;
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}
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int rank = 0;
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int num = read_rng->current_number - 1;
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int64_t cur_offset = 0;
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int num_loc;
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for (; rank <= read_rng->last_noncont_ind; rank++) {
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num_loc = num / read_rng->Dim[rank].count;
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cur_offset += num_loc * read_rng->Dim[rank].size;
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num = num % read_rng->Dim[rank].count;
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}
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*offset = cur_offset + read_rng->init_offset;
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return true;
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}
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bool is_arr_desc_contiguous(const Arr_Desc *ap)
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{
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int64_t rank = ap->rank - 1;
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int64_t length = ap->dim[rank].size;
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for (; rank >= 0; rank--) {
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if (ap->dim[rank].stride > 1 &&
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ap->dim[rank].upper - ap->dim[rank].lower != 0) {
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return false;
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}
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else if (length != ap->dim[rank].size) {
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for (; rank >= 0; rank--) {
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if (ap->dim[rank].upper - ap->dim[rank].lower != 0) {
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return false;
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}
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}
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return true;
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}
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length *= (ap->dim[rank].upper - ap->dim[rank].lower + 1);
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}
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return true;
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}
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int64_t cean_get_transf_size(CeanReadRanges * read_rng)
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{
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return(read_rng->range_max_number * read_rng->range_size);
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}
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static uint64_t last_left, last_right;
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typedef void (*fpp)(
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const char *spaces,
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uint64_t low,
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uint64_t high,
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int esize,
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bool print_values
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);
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static void generate_one_range(
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const char *spaces,
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uint64_t lrange,
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uint64_t rrange,
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fpp fp,
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int esize,
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bool print_values
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)
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{
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OFFLOAD_TRACE(3,
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"%s generate_one_range(lrange=%p, rrange=%p, esize=%d)\n",
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spaces, (void*)lrange, (void*)rrange, esize);
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if (last_left == -1) {
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// First range
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last_left = lrange;
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}
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else {
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if (lrange == last_right+1) {
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// Extend previous range, don't print
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}
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else {
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(*fp)(spaces, last_left, last_right, esize, print_values);
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last_left = lrange;
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}
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}
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last_right = rrange;
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}
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static bool element_is_contiguous(
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uint64_t rank,
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const struct Dim_Desc *ddp
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)
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{
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if (rank == 1) {
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return (ddp[0].lower == ddp[0].upper || ddp[0].stride == 1);
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}
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else {
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return ((ddp[0].size == (ddp[1].upper-ddp[1].lower+1)*ddp[1].size) &&
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element_is_contiguous(rank-1, ddp++));
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}
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}
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static void generate_mem_ranges_one_rank(
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const char *spaces,
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uint64_t base,
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uint64_t rank,
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const struct Dim_Desc *ddp,
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fpp fp,
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int esize,
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bool print_values
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)
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{
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uint64_t lindex = ddp->lindex;
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uint64_t lower = ddp->lower;
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uint64_t upper = ddp->upper;
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uint64_t stride = ddp->stride;
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uint64_t size = ddp->size;
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OFFLOAD_TRACE(3,
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"%s "
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"generate_mem_ranges_one_rank(base=%p, rank=%lld, lindex=%lld, "
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"lower=%lld, upper=%lld, stride=%lld, size=%lld, esize=%d)\n",
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spaces, (void*)base, rank, lindex, lower, upper, stride, size, esize);
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if (element_is_contiguous(rank, ddp)) {
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uint64_t lrange, rrange;
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lrange = base + (lower-lindex)*size;
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rrange = lrange + (upper-lower+1)*size - 1;
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generate_one_range(spaces, lrange, rrange, fp, esize, print_values);
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}
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else {
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if (rank == 1) {
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for (int i=lower-lindex; i<=upper-lindex; i+=stride) {
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uint64_t lrange, rrange;
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lrange = base + i*size;
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rrange = lrange + size - 1;
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generate_one_range(spaces, lrange, rrange,
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fp, esize, print_values);
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}
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}
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else {
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for (int i=lower-lindex; i<=upper-lindex; i+=stride) {
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generate_mem_ranges_one_rank(
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spaces, base+i*size, rank-1, ddp+1,
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fp, esize, print_values);
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}
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}
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}
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}
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static void generate_mem_ranges(
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const char *spaces,
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const Arr_Desc *adp,
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bool deref,
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fpp fp,
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bool print_values
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)
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{
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uint64_t esize;
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OFFLOAD_TRACE(3,
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"%s "
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"generate_mem_ranges(adp=%p, deref=%d, fp)\n",
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spaces, adp, deref);
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last_left = -1;
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last_right = -2;
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// Element size is derived from last dimension
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esize = adp->dim[adp->rank-1].size;
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generate_mem_ranges_one_rank(
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// For c_cean_var the base addr is the address of the data
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// For c_cean_var_ptr the base addr is dereferenced to get to the data
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spaces, deref ? *((uint64_t*)(adp->base)) : adp->base,
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adp->rank, &adp->dim[0], fp, esize, print_values);
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(*fp)(spaces, last_left, last_right, esize, print_values);
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}
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// returns offset and length of the data to be transferred
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void __arr_data_offset_and_length(
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const Arr_Desc *adp,
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int64_t &offset,
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int64_t &length
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)
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{
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int64_t rank = adp->rank - 1;
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int64_t size = adp->dim[rank].size;
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int64_t r_off = 0; // offset from right boundary
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// find the rightmost dimension which takes just part of its
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// range. We define it if the size of left rank is not equal
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// the range's length between upper and lower boungaries
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while (rank > 0) {
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size *= (adp->dim[rank].upper - adp->dim[rank].lower + 1);
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if (size != adp->dim[rank - 1].size) {
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break;
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}
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rank--;
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}
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offset = (adp->dim[rank].lower - adp->dim[rank].lindex) *
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adp->dim[rank].size;
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// find gaps both from the left - offset and from the right - r_off
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for (rank--; rank >= 0; rank--) {
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offset += (adp->dim[rank].lower - adp->dim[rank].lindex) *
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adp->dim[rank].size;
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r_off += adp->dim[rank].size -
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(adp->dim[rank + 1].upper - adp->dim[rank + 1].lindex + 1) *
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adp->dim[rank + 1].size;
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}
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length = (adp->dim[0].upper - adp->dim[0].lindex + 1) *
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adp->dim[0].size - offset - r_off;
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}
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#if OFFLOAD_DEBUG > 0
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static void print_range(
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const char *spaces,
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uint64_t low,
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uint64_t high,
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int esize,
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bool print_values
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)
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{
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char buffer[1024];
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char number[32];
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OFFLOAD_TRACE(3, "%s print_range(low=%p, high=%p, esize=%d)\n",
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spaces, (void*)low, (void*)high, esize);
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if (console_enabled < 4 || !print_values) {
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return;
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}
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OFFLOAD_TRACE(4, "%s values:\n", spaces);
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int count = 0;
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buffer[0] = '\0';
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while (low <= high)
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{
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switch (esize)
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{
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case 1:
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sprintf(number, "%d ", *((char *)low));
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low += 1;
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break;
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case 2:
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sprintf(number, "%d ", *((short *)low));
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low += 2;
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break;
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case 4:
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sprintf(number, "%d ", *((int *)low));
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low += 4;
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break;
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default:
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sprintf(number, "0x%016x ", *((uint64_t *)low));
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low += 8;
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break;
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}
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strcat(buffer, number);
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count++;
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if (count == 10) {
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OFFLOAD_TRACE(4, "%s %s\n", spaces, buffer);
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count = 0;
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buffer[0] = '\0';
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}
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}
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if (count != 0) {
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OFFLOAD_TRACE(4, "%s %s\n", spaces, buffer);
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}
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}
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void __arr_desc_dump(
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const char *spaces,
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const char *name,
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const Arr_Desc *adp,
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bool deref,
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bool print_values
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)
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{
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OFFLOAD_TRACE(2, "%s%s CEAN expression %p\n", spaces, name, adp);
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if (adp != 0) {
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OFFLOAD_TRACE(2, "%s base=%llx, rank=%lld\n",
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spaces, adp->base, adp->rank);
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for (int i = 0; i < adp->rank; i++) {
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OFFLOAD_TRACE(2,
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"%s dimension %d: size=%lld, lindex=%lld, "
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"lower=%lld, upper=%lld, stride=%lld\n",
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spaces, i, adp->dim[i].size, adp->dim[i].lindex,
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adp->dim[i].lower, adp->dim[i].upper,
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adp->dim[i].stride);
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}
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// For c_cean_var the base addr is the address of the data
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// For c_cean_var_ptr the base addr is dereferenced to get to the data
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generate_mem_ranges(spaces, adp, deref, &print_range, print_values);
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}
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}
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void noncont_struct_dump(
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const char *spaces,
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const char *name,
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struct NonContigDesc *desc_p)
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{
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OFFLOAD_TRACE(2, "%s%s NonCont Struct expression %p\n",
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spaces, name, desc_p->base);
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if (desc_p) {
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OFFLOAD_TRACE(2, "%s%s base=%p\n", spaces, name, desc_p->base);
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for (int i = 0; i < desc_p->interval_cnt; i++) {
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OFFLOAD_TRACE(2,"%s dimension %d: lower=%lld, size=%lld\n",
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spaces, i, desc_p->interval[i].lower, desc_p->interval[i].size);
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}
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}
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}
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int64_t get_noncont_struct_size(struct NonContigDesc *desc_p)
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{
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int index = desc_p->interval_cnt - 1;
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return(desc_p->interval[index].lower + desc_p->interval[index].size);
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}
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#endif // OFFLOAD_DEBUG
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