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[diderot] Annotation of /branches/pure-cfg/src/compiler/translate/translate-basis.sml
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Annotation of /branches/pure-cfg/src/compiler/translate/translate-basis.sml

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1 : jhr 180 (* translate-basis.sml
2 :     *
3 : jhr 435 * COPYRIGHT (c) 2010 The Diderot Project (http://diderot-language.cs.uchicago.edu)
4 : jhr 180 * All rights reserved.
5 :     *
6 :     * Translation for basis operations in Simple AST to HighIL code
7 :     *)
8 :    
9 :     structure TranslateBasis : sig
10 :    
11 : jhr 189 (* translate(lhs, f, mvs, args) translates the application of f (specialized
12 :     * to the instantiated meta variables mvs) to a list of SSA assignments in
13 :     * reverse order.
14 :     *)
15 : jhr 180 val translate : (HighIL.var * Var.var * Types.meta_var list * HighIL.var list)
16 : jhr 188 -> HighIL.assign list
17 : jhr 180
18 :     end = struct
19 :    
20 : jhr 194 structure BV = BasisVars
21 : jhr 180 structure IL = HighIL
22 : jhr 392 structure DstTy = HighILTypes
23 : jhr 180 structure Op = HighOps
24 : jhr 183 structure Ty = Types
25 :     structure TU = TypeUtil
26 :     structure MV = MetaVar
27 : jhr 194 structure VTbl = Var.Tbl
28 : jhr 180
29 : jhr 197 fun pruneDim d = (case TU.pruneDim d
30 :     of (Ty.DimConst n) => n
31 :     | d => raise Fail("unresolved dimension " ^ TU.dimToString d)
32 :     (* end case *))
33 :    
34 : jhr 407 fun pruneShape sv = (case TU.pruneShape(MV.toShape sv)
35 : jhr 426 of Ty.Shape dd => DstTy.tensorTy(List.map pruneDim dd)
36 : jhr 183 | shp => raise Fail("unresolved shape " ^ TU.shapeToString shp)
37 :     (* end case *))
38 :    
39 : jhr 426 fun dimVarToTensor dv = DstTy.tensorTy[pruneDim(MV.toDim dv)]
40 : jhr 683 fun dimVarToMatrix dv = let
41 :     val d = pruneDim(MV.toDim dv)
42 :     in
43 :     DstTy.tensorTy[d, d] (* square matrix type *)
44 :     end
45 : jhr 407 fun shapeVarToTensor sv = pruneShape sv
46 : jhr 197
47 : jhr 407 fun assign (y, rator, xs) = [(y, IL.OP(rator, xs))]
48 :    
49 : jhr 695 fun basisFn name (y, [], xs) = [(y, IL.APPLY(name, xs))]
50 :    
51 : jhr 407 fun simpleOp rator (y, [], xs) = assign (y, rator, xs)
52 :    
53 :     fun tensorOp rator (y, [sv], xs) = assign (y, rator(shapeVarToTensor sv), xs)
54 :    
55 :     fun vectorOp rator (y, [dv], xs) = assign (y, rator(dimVarToTensor dv), xs)
56 :    
57 : jhr 517 fun kernel h (y, [], []) = assign(y, Op.Kernel(h, 0), [])
58 : jhr 197
59 : jhr 184 (* build a table that maps Basis variables to their translation functions *)
60 : jhr 197 val tbl : ((IL.var * Ty.meta_var list * IL.var list) -> IL.assign list) VTbl.hash_table = let
61 : jhr 194 val tbl = VTbl.mkTable (128, Fail "Translate table")
62 : jhr 180 in
63 : jhr 194 List.app (VTbl.insert tbl) [
64 : jhr 392 (BV.add_ii, simpleOp(Op.Add DstTy.IntTy)),
65 : jhr 194 (BV.add_tt, tensorOp Op.Add),
66 : jhr 392 (BV.sub_ii, simpleOp(Op.Sub DstTy.IntTy)),
67 : jhr 194 (BV.sub_tt, tensorOp Op.Sub),
68 : jhr 392 (BV.mul_ii, simpleOp(Op.Mul DstTy.IntTy)),
69 : jhr 426 (BV.mul_rr, simpleOp(Op.Mul(DstTy.realTy))),
70 : jhr 194 (BV.mul_rt, tensorOp Op.Scale),
71 :     (BV.mul_tr, fn (y, sv, [t, r]) => tensorOp Op.Scale (y, sv, [r, t])),
72 : jhr 392 (BV.div_ii, simpleOp(Op.Div DstTy.IntTy)),
73 : jhr 426 (BV.div_rr, simpleOp(Op.Div(DstTy.realTy))),
74 : jhr 194 (BV.div_tr, tensorOp Op.InvScale),
75 : jhr 392 (BV.lt_ii, simpleOp(Op.LT DstTy.IntTy)),
76 : jhr 426 (BV.lt_rr, simpleOp(Op.LT(DstTy.realTy))),
77 : jhr 392 (BV.lte_ii, simpleOp(Op.LTE DstTy.IntTy)),
78 : jhr 426 (BV.lte_rr, simpleOp(Op.LTE(DstTy.realTy))),
79 : jhr 392 (BV.gte_ii, simpleOp(Op.GTE DstTy.IntTy)),
80 : jhr 426 (BV.gte_rr, simpleOp(Op.GTE(DstTy.realTy))),
81 : jhr 392 (BV.gt_ii, simpleOp(Op.GT DstTy.IntTy)),
82 : jhr 426 (BV.gt_rr, simpleOp(Op.GT(DstTy.realTy))),
83 : jhr 392 (BV.equ_bb, simpleOp(Op.EQ DstTy.BoolTy)),
84 :     (BV.equ_ii, simpleOp(Op.EQ DstTy.IntTy)),
85 :     (BV.equ_ss, simpleOp(Op.EQ DstTy.StringTy)),
86 : jhr 426 (BV.equ_rr, simpleOp(Op.EQ(DstTy.realTy))),
87 : jhr 392 (BV.neq_bb, simpleOp(Op.NEQ DstTy.BoolTy)),
88 :     (BV.neq_ii, simpleOp(Op.NEQ DstTy.IntTy)),
89 :     (BV.neq_ss, simpleOp(Op.NEQ DstTy.StringTy)),
90 : jhr 426 (BV.neq_rr, simpleOp(Op.NEQ(DstTy.realTy))),
91 : jhr 392 (BV.neg_i, simpleOp(Op.Neg DstTy.IntTy)),
92 : jhr 194 (BV.neg_t, tensorOp Op.Neg),
93 : jhr 197 (BV.neg_f, fn (y, _, xs) => assign(y, Op.NegField, xs)),
94 : jhr 407 (BV.op_at, fn (y, [_, dv, sv], xs) =>
95 :     assign(y, Op.Probe(shapeVarToTensor sv, dimVarToTensor dv), xs)),
96 : jhr 517 (BV.op_convolve, fn (y, [_, dv, _], xs) =>
97 :     assign(y, Op.Field(pruneDim(MV.toDim dv)), xs)),
98 : jhr 197 (BV.op_D, fn (y, _, xs) => assign(y, Op.DiffField, xs)),
99 : jhr 719 (BV.op_norm, fn (y, [dv], xs) => (case pruneDim(MV.toDim dv)
100 :     of 1 => assign(y, Op.Abs DstTy.realTy, xs)
101 :     | n => assign(y, Op.Norm(DstTy.tensorTy[n]), xs)
102 :     (* end case *))),
103 : jhr 194 (BV.op_not, simpleOp Op.Not),
104 : jhr 695 (BV.fn_atan2, basisFn ILBasis.atan2),
105 : jhr 197 (BV.fn_CL, fn (y, _, xs) => assign(y, Op.CL, xs)),
106 : jhr 517 (BV.fn_convolve, fn (y, [_, dv, _], [h, img]) =>
107 :     assign(y, Op.Field(pruneDim(MV.toDim dv)), [img, h])),
108 : jhr 695 (BV.fn_cos, basisFn ILBasis.cos),
109 : jhr 685 (BV.fn_cross, simpleOp Op.Cross),
110 : jhr 197 (BV.fn_dot, vectorOp Op.Dot),
111 : jhr 683 (BV.fn_evals, fn _ => raise Fail "evals not implemented yet"), (* FIXME *)
112 :     (BV.fn_evecs, fn _ => raise Fail "evecs not implemented yet"), (* FIXME *)
113 : jhr 407 (BV.fn_inside, fn (y, [_, dv, _], xs) =>
114 : jhr 548 assign(y, Op.Inside(pruneDim(MV.toDim dv)), xs)),
115 : jhr 263 (BV.fn_max, simpleOp Op.Max),
116 :     (BV.fn_min, simpleOp Op.Min),
117 : jhr 197 (BV.fn_modulate, vectorOp Op.Mul),
118 : jhr 719 (BV.fn_normalize, tensorOp Op.Normalize),
119 : jhr 683 (BV.fn_outer, fn _ => raise Fail "outer not implemented yet"), (* FIXME *)
120 : jhr 695 (BV.fn_pow, basisFn ILBasis.pow),
121 : jhr 197 (BV.fn_principleEvec, vectorOp Op.PrincipleEvec),
122 : jhr 695 (BV.fn_sin, basisFn ILBasis.sin),
123 :     (BV.fn_tan, basisFn ILBasis.tan),
124 : jhr 683 (BV.fn_trace, fn (y, [dv], xs) => assign(y, Op.Trace(dimVarToMatrix dv), xs)),
125 : jhr 197 (BV.kn_bspln3, kernel Kernel.bspln3),
126 :     (BV.kn_bspln5, kernel Kernel.bspln5),
127 :     (BV.kn_ctmr, kernel Kernel.ctmr),
128 :     (BV.kn_tent, kernel Kernel.tent),
129 : jhr 406 (BV.i2r, simpleOp Op.IntToReal)
130 : jhr 180 ];
131 :     tbl
132 :     end
133 :    
134 : jhr 194 fun translate (y, f, mvs, xs) = (case VTbl.find tbl f
135 : jhr 197 of SOME transFn => transFn(y, mvs, xs)
136 : jhr 407 | NONE => raise Fail("TranslateBasis.translate: unknown basis function " ^ Var.uniqueNameOf f)
137 : jhr 180 (* end case *))
138 :    
139 :     end

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