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/* ************************************************************************
* Copyright 2013 Advanced Micro Devices, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <kerngen.h>
#include <mempat.h>
int
kgenLoopUnroll(
struct KgenContext *ctx,
LoopCtl *loopCtl,
DataType dtype,
const LoopUnrollers *unrollers,
void *priv)
{
int ret = 0;
char tmp[1024];
unsigned long i, n;
unsigned int nfloats;
int vecLen;
if (!(dtype == TYPE_FLOAT ||
dtype == TYPE_DOUBLE ||
dtype == TYPE_COMPLEX_FLOAT ||
dtype == TYPE_COMPLEX_DOUBLE)) {
return -EINVAL;
}
if (unrollers->genSingle == NULL) {
return -EINVAL;
}
nfloats = dtypeSize(dtype) / sizeof(cl_float);
vecLen = (unrollers->getVecLen == NULL)? FLOAT4_VECLEN
: unrollers->getVecLen(ctx, priv);
if (loopCtl->ocName) {
if (loopCtl->obConst) {
sprintf(tmp, "for (%s = 0; %s < %lu; %s++)",
loopCtl->ocName, loopCtl->ocName,
loopCtl->outBound.val, loopCtl->ocName);
}
else {
sprintf(tmp, "for (%s = 0; %s < %s; %s++)",
loopCtl->ocName, loopCtl->ocName,
loopCtl->outBound.name, loopCtl->ocName);
}
kgenBeginBranch(ctx, tmp);
}
if (unrollers->preUnroll) {
ret = unrollers->preUnroll(ctx, priv);
}
if ((dtype != TYPE_COMPLEX_DOUBLE) && unrollers->genSingleVec) {
n = loopCtl->inBound * nfloats / vecLen;
for (i = 0; (i < n) && !ret; i++) {
ret = unrollers->genSingleVec(ctx, priv);
}
n = loopCtl->inBound % (vecLen / nfloats);
}
else {
n = loopCtl->inBound;
}
for (i = 0; (i < n) && !ret; i++) {
ret = unrollers->genSingle(ctx, priv);
}
if (unrollers->postUnroll && !ret) {
ret = unrollers->postUnroll(ctx, priv);
}
if (loopCtl->ocName && !ret) {
ret = kgenEndBranch(ctx, NULL);
}
return ret ? 0 : -EOVERFLOW;
}
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