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1/*2 * Copyright 2012 Ecole Normale Superieure3 *4 * Use of this software is governed by the MIT license5 *6 * Written by Sven Verdoolaege,7 * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France8 */9 10#include <isl/space.h>11 12#include <isl_multi_macro.h>13 14/* Given two MULTI(BASE)s A -> B and C -> D,15 * construct a MULTI(BASE) [A -> C] -> [B -> D].16 *17 * If "multi1" and/or "multi2" has an explicit domain, then18 * intersect the domain of the result with these explicit domains.19 */20__isl_give MULTI(BASE) *FN(MULTI(BASE),product)(21 __isl_take MULTI(BASE) *multi1, __isl_take MULTI(BASE) *multi2)22{23 int i;24 EL *el;25 isl_space *space;26 MULTI(BASE) *res;27 isl_size in1, in2, out1, out2;28 29 FN(MULTI(BASE),align_params_bin)(&multi1, &multi2);30 in1 = FN(MULTI(BASE),dim)(multi1, isl_dim_in);31 in2 = FN(MULTI(BASE),dim)(multi2, isl_dim_in);32 out1 = FN(MULTI(BASE),dim)(multi1, isl_dim_out);33 out2 = FN(MULTI(BASE),dim)(multi2, isl_dim_out);34 if (in1 < 0 || in2 < 0 || out1 < 0 || out2 < 0)35 goto error;36 space = isl_space_product(FN(MULTI(BASE),get_space)(multi1),37 FN(MULTI(BASE),get_space)(multi2));38 res = FN(MULTI(BASE),alloc)(isl_space_copy(space));39 space = isl_space_domain(space);40 41 for (i = 0; i < out1; ++i) {42 el = FN(FN(MULTI(BASE),get),BASE)(multi1, i);43 el = FN(EL,insert_dims)(el, isl_dim_in, in1, in2);44 el = FN(EL,reset_domain_space)(el, isl_space_copy(space));45 res = FN(FN(MULTI(BASE),set),BASE)(res, i, el);46 }47 48 for (i = 0; i < out2; ++i) {49 el = FN(FN(MULTI(BASE),get),BASE)(multi2, i);50 el = FN(EL,insert_dims)(el, isl_dim_in, 0, in1);51 el = FN(EL,reset_domain_space)(el, isl_space_copy(space));52 res = FN(FN(MULTI(BASE),set),BASE)(res, out1 + i, el);53 }54 55 if (FN(MULTI(BASE),has_explicit_domain)(multi1) ||56 FN(MULTI(BASE),has_explicit_domain)(multi2))57 res = FN(MULTI(BASE),intersect_explicit_domain_product)(res,58 multi1, multi2);59 60 isl_space_free(space);61 FN(MULTI(BASE),free)(multi1);62 FN(MULTI(BASE),free)(multi2);63 return res;64error:65 FN(MULTI(BASE),free)(multi1);66 FN(MULTI(BASE),free)(multi2);67 return NULL;68}69