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/*
* Copyright 2012 Ecole Normale Superieure
*
* Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege,
* Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France
*/
#include <isl/ctx.h>
#include <isl/space.h>
#include <isl_multi_macro.h>
/* Given two multi expressions, "multi1"
*
* [A1 A2] -> [B1 B2]
*
* where A2 starts at position "in_pos" and B2 starts at position "out_pos",
* and "multi2"
*
* [C] -> [D]
*
* return the multi expression
*
* [A1 C A2] -> [B1 D B2]
*
* We first insert input dimensions to obtain
*
* [A1 C A2] -> [B1 B2]
*
* and
*
* [A1 C A2] -> [D]
*
* and then apply range_splice.
*/
__isl_give MULTI(BASE) *FN(MULTI(BASE),splice)(
__isl_take MULTI(BASE) *multi1, unsigned in_pos, unsigned out_pos,
__isl_take MULTI(BASE) *multi2)
{
isl_size n_in1;
isl_size n_in2;
n_in1 = FN(MULTI(BASE),dim)(multi1, isl_dim_in);
n_in2 = FN(MULTI(BASE),dim)(multi2, isl_dim_in);
if (n_in1 < 0 || n_in2 < 0)
goto error;
if (FN(MULTI(BASE),check_range)(multi1, isl_dim_in, in_pos, 0) < 0)
goto error;
multi1 = FN(MULTI(BASE),insert_dims)(multi1, isl_dim_in, in_pos, n_in2);
multi2 = FN(MULTI(BASE),insert_dims)(multi2, isl_dim_in, n_in2,
n_in1 - in_pos);
multi2 = FN(MULTI(BASE),insert_dims)(multi2, isl_dim_in, 0, in_pos);
return FN(MULTI(BASE),range_splice)(multi1, out_pos, multi2);
error:
FN(MULTI(BASE),free)(multi1);
FN(MULTI(BASE),free)(multi2);
return NULL;
}
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