| 1 | /* |
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| 2 | * Copyright 2013 Ecole Normale Superieure |
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| 3 | * |
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| 4 | * Use of this software is governed by the MIT license |
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| 5 | * |
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| 6 | * Written by Sven Verdoolaege, |
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| 7 | * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France |
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| 8 | */ |
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| 9 | |
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| 10 | #include <isl/space.h> |
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| 11 | |
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| 12 | #include <isl_multi_macro.h> |
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| 13 | |
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| 14 | /* Move the "n" dimensions of "src_type" starting at "src_pos" of "multi" |
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| 15 | * to dimensions of "dst_type" at "dst_pos". |
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| 16 | * |
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| 17 | * We only support moving input dimensions to parameters and vice versa. |
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| 18 | */ |
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| 19 | __isl_give MULTI(BASE) *FN(MULTI(BASE),move_dims)(__isl_take MULTI(BASE) *multi, |
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| 20 | enum isl_dim_type dst_type, unsigned dst_pos, |
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| 21 | enum isl_dim_type src_type, unsigned src_pos, unsigned n) |
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| 22 | { |
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| 23 | isl_space *space; |
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| 24 | isl_size size; |
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| 25 | int i; |
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| 26 | |
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| 27 | size = FN(MULTI(BASE),size)(multi); |
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| 28 | if (size < 0) |
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| 29 | return FN(MULTI(BASE),free)(multi); |
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| 30 | |
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| 31 | if (n == 0 && |
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| 32 | !isl_space_is_named_or_nested(space: multi->space, type: src_type) && |
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| 33 | !isl_space_is_named_or_nested(space: multi->space, type: dst_type)) |
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| 34 | return multi; |
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| 35 | |
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| 36 | if (dst_type == isl_dim_out || src_type == isl_dim_out) |
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| 37 | isl_die(FN(MULTI(BASE),get_ctx)(multi), isl_error_invalid, |
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| 38 | "cannot move output/set dimension" , |
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| 39 | return FN(MULTI(BASE),free)(multi)); |
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| 40 | if (dst_type == isl_dim_div || src_type == isl_dim_div) |
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| 41 | isl_die(FN(MULTI(BASE),get_ctx)(multi), isl_error_invalid, |
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| 42 | "cannot move divs" , |
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| 43 | return FN(MULTI(BASE),free)(multi)); |
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| 44 | if (FN(MULTI(BASE),check_range)(obj: multi, type: src_type, first: src_pos, n) < 0) |
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| 45 | return FN(MULTI(BASE),free)(multi); |
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| 46 | if (dst_type == src_type) |
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| 47 | isl_die(FN(MULTI(BASE),get_ctx)(multi), isl_error_unsupported, |
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| 48 | "moving dims within the same type not supported" , |
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| 49 | return FN(MULTI(BASE),free)(multi)); |
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| 50 | |
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| 51 | space = FN(MULTI(BASE),take_space)(multi); |
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| 52 | space = isl_space_move_dims(space, dst_type, dst_pos, |
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| 53 | src_type, src_pos, n); |
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| 54 | multi = FN(MULTI(BASE),restore_space)(multi, space); |
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| 55 | |
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| 56 | if (FN(MULTI(BASE),has_explicit_domain)(multi)) |
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| 57 | multi = FN(MULTI(BASE),move_explicit_domain_dims)(multi, |
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| 58 | dst_type, dst_pos, src_type, src_pos, n); |
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| 59 | |
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| 60 | for (i = 0; i < size; ++i) { |
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| 61 | EL *el; |
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| 62 | |
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| 63 | el = FN(MULTI(BASE),take_at)(multi, pos: i); |
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| 64 | el = FN(EL,move_dims)(aff: el, dst_type, dst_pos, |
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| 65 | src_type, src_pos, n); |
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| 66 | multi = FN(MULTI(BASE),restore_at)(multi, pos: i, el); |
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| 67 | } |
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| 68 | |
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| 69 | return multi; |
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| 70 | } |
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| 71 | |
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