forked from OSchip/llvm-project
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
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* Copyright 2010 INRIA Saclay
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*
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* Use of this software is governed by the MIT license
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*
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* Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France,
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* Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod,
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* 91893 Orsay, France
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*/
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#include <isl_union_macro.h>
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/* Evaluate "u" in the void point "pnt".
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* In particular, return the value NaN.
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*/
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static __isl_give isl_val *FN(UNION,eval_void)(__isl_take UNION *u,
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__isl_take isl_point *pnt)
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{
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isl_ctx *ctx;
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ctx = isl_point_get_ctx(pnt);
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FN(UNION,free)(u);
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isl_point_free(pnt);
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return isl_val_nan(ctx);
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}
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/* Is the domain space of "entry" equal to "space"?
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*/
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static isl_bool FN(UNION,has_domain_space)(const void *entry, const void *val)
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{
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PART *part = (PART *)entry;
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isl_space *space = (isl_space *) val;
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if (isl_space_is_params(space))
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return isl_space_is_set(part->dim);
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return isl_space_tuple_is_equal(part->dim, isl_dim_in,
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space, isl_dim_set);
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}
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__isl_give isl_val *FN(UNION,eval)(__isl_take UNION *u,
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__isl_take isl_point *pnt)
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{
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uint32_t hash;
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struct isl_hash_table_entry *entry;
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isl_bool is_void;
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isl_space *space;
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isl_val *v;
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if (!u || !pnt)
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goto error;
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is_void = isl_point_is_void(pnt);
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if (is_void < 0)
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goto error;
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if (is_void)
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return FN(UNION,eval_void)(u, pnt);
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space = isl_space_copy(pnt->dim);
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if (!space)
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goto error;
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hash = isl_space_get_hash(space);
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entry = isl_hash_table_find(u->space->ctx, &u->table,
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hash, &FN(UNION,has_domain_space),
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space, 0);
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isl_space_free(space);
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if (!entry)
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goto error;
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if (entry == isl_hash_table_entry_none) {
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v = isl_val_zero(isl_point_get_ctx(pnt));
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isl_point_free(pnt);
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} else {
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v = FN(PART,eval)(FN(PART,copy)(entry->data), pnt);
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}
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FN(UNION,free)(u);
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return v;
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error:
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FN(UNION,free)(u);
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isl_point_free(pnt);
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return NULL;
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}
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