Home My Page Projects Code Snippets Project Openings diderot
Summary Activity Tracker Tasks SCM

SCM Repository

[diderot] Annotation of /branches/lamont/src/compiler/c-util/c-ty-translate.sml
ViewVC logotype

Annotation of /branches/lamont/src/compiler/c-util/c-ty-translate.sml

Parent Directory Parent Directory | Revision Log Revision Log


Revision 2083 - (view) (download)

1 : jhr 1818 (* c-ty-translate.sml
2 :     *
3 :     * COPYRIGHT (c) 2012 The Diderot Project (http://diderot-language.cs.uchicago.edu)
4 :     * All rights reserved.
5 : jhr 1820 *
6 :     * Functions to support the translation between the external C API and the internal (host-side)
7 :     * Diderot representation.
8 : jhr 1818 *)
9 :    
10 : jhr 1820 signature TY_TRANSLATE =
11 :     sig
12 :    
13 :     (* translate a type to its internal Diderot represenation *)
14 :     val toType : TreeIL.Ty.ty -> CLang.ty
15 :    
16 :     (* translate a TreeIL type to the C types used to represent it in the external API *)
17 :     val toCType : TreeIL.Ty.ty -> CLang.ty
18 :    
19 :     (* generate code to copy values from their internal Diderot representation to the external
20 :     * C representation.
21 :     *)
22 :     val copyToC : {ty : TreeIL.Ty.ty, dst : CLang.exp, src : CLang.exp} -> CLang.stm list
23 :    
24 :     (* generate code to copy values from their external C representation to the internal
25 :     * Diderot representation.
26 :     *)
27 :     val copyFromC : {ty : TreeIL.Ty.ty, dst : CLang.exp, src : CLang.exp} -> CLang.stm list
28 :    
29 :     end
30 :    
31 : jhr 1818 structure CTyTranslate : TY_TRANSLATE =
32 :     struct
33 :    
34 :     structure Ty = TreeIL.Ty
35 :     structure CL = CLang
36 :     structure N = CNames
37 : lamonts 2083 structure RN = RuntimeNames
38 : jhr 1818
39 : jhr 2024 (* translate a type to its internal Diderot representation *)
40 : jhr 1820 fun toType ty = (case ty
41 : jhr 1818 of Ty.BoolTy => CL.T_Named "bool"
42 : jhr 1820 | Ty.StringTy => CL.T_Named "Diderot_string_t"
43 :     | Ty.IntTy => CL.T_Named "Diderot_int_t"
44 :     | Ty.TensorTy[] => CL.T_Named "Diderot_real_t"
45 : jhr 1818 | Ty.TensorTy[n] => CL.T_Named(N.vecTy n)
46 :     | Ty.TensorTy[n, m] => CL.T_Named(N.matTy(n,m))
47 :     | Ty.TensorTy[n, m, l] => CL.T_Named(N.ten3Ty(n,m,l))
48 :     | Ty.SeqTy(Ty.IntTy, n) => CL.T_Named(N.ivecTy n)
49 : jhr 1820 | Ty.SeqTy(ty, n) => CL.T_Array(toType ty, SOME n)
50 : lamonts 2083 | Ty.StrandSeqTy n => CL.T_Ptr(CL.T_Named (RN.strandTy (Atom.toString n)))
51 : jhr 1818 (* do we make the following types externally visible? *)
52 :     | Ty.DynSeqTy _ => CL.T_Ptr(CL.T_Named N.dynSeqTy)
53 :     | Ty.AddrTy info => CL.T_Ptr(CL.T_Num(ImageInfo.sampleTy info))
54 :     | Ty.ImageTy info => CL.T_Ptr(CL.T_Named(N.imageTy(ImageInfo.dim info)))
55 : jhr 1820 | _ => raise Fail(concat["CTyTranslate.toType(", Ty.toString ty, ")"])
56 : jhr 1818 (* end case *))
57 :    
58 : jhr 1820 (* translate a TreeIL type to the C types used to represent it in the external API *)
59 :     fun toCType ty = (case ty
60 :     of Ty.BoolTy => CL.T_Named "bool"
61 :     | Ty.StringTy => CL.charPtr
62 :     | Ty.IntTy => !N.gIntTy
63 : lamonts 2083 | Ty.StrandSeqTy n => CL.T_Ptr(CL.T_Named (RN.strandTy (Atom.toString n)))
64 : jhr 1820 | Ty.TensorTy[] => !N.gRealTy
65 :     | Ty.TensorTy[n] => CL.T_Array(!N.gRealTy, SOME n)
66 :     | Ty.TensorTy[n, m] => CL.T_Array(CL.T_Array(!N.gRealTy, SOME n), SOME m)
67 :     | Ty.TensorTy[n, m, l] => CL.T_Array(CL.T_Array(CL.T_Array(!N.gRealTy, SOME n), SOME m), SOME l)
68 :     | Ty.SeqTy(Ty.IntTy, n) => CL.T_Array(!N.gIntTy, SOME n)
69 :     | Ty.SeqTy(ty, n) => CL.T_Array(toCType ty, SOME n)
70 :     | Ty.DynSeqTy _ => CL.T_Ptr(CL.T_Named N.dynSeqTy)
71 :     | Ty.AddrTy info => CL.T_Ptr(CL.T_Num(ImageInfo.sampleTy info))
72 :     | Ty.ImageTy info => CL.T_Ptr(CL.T_Named(N.imageTy(ImageInfo.dim info)))
73 :     | _ => raise Fail(concat["CTyTranslate.toCType(", Ty.toString ty, ")"])
74 :     (* end case *))
75 :    
76 : jhr 1818 fun subscript (e, i) = CL.mkSubscript(e, CL.mkInt(IntInf.fromInt i))
77 :    
78 : jhr 1820 (* we might want to use memcpy in some cases
79 :     fun copy (ty, dst, src) = let
80 :     fun assign () = CL.mkAssign(dst, src)
81 :     fun addrOf (CL.E_UnOp(CL.%*, x)) = x
82 :     | addrOf x = CL.mkUnOp(CL.%&, x)
83 :     fun memcpy () = CL.mkCall("memcpy", [addrOf dst, addrOf src, CL.mkSizeof(trType ty)])
84 :     in
85 :     case ty
86 :     of Ty.BoolTy => assign()
87 :     | Ty.StringTy => CL.mkCall("strcpy", [addrOf dst, addrOf src])
88 :     | Ty.IntTy => assign()
89 :     | Ty.TensorTy[] => assign()
90 :     | Ty.TensorTy _ => memcpy()
91 :     | Ty.SeqTy _ => memcpy()
92 :     | Ty.DynSeqTy _ => raise Fail "dynamic sequence"
93 :     | Ty.ImageTy _ => raise Fail "unexpected image copy"
94 :     | _ => raise Fail(concat["bogus input type ", Ty.toString ty])
95 :     (* end case *)
96 :     end
97 :     *)
98 :    
99 : jhr 1818 (* generate code to copy values from their internal Diderot representation to the external
100 : jhr 1820 * C representation.
101 : jhr 1818 *)
102 :     fun copyToC {ty, dst, src} = (case ty
103 : jhr 1820 of Ty.BoolTy => [CL.mkAssign(dst, src)]
104 :     | Ty.StringTy => [CL.mkAssign(dst, src)]
105 :     | Ty.IntTy => [CL.mkAssign(dst, src)]
106 :     | Ty.TensorTy[] => [CL.mkAssign(dst, src)]
107 : jhr 1858 | Ty.TensorTy[n] => let
108 :     val src' = CL.mkCast(CL.T_Named(N.unionTy n), src)
109 :     in
110 :     List.tabulate (n,
111 :     fn i => CL.mkAssign(
112 :     subscript (CL.mkUnOp(CL.%&, dst), i),
113 :     subscript (CL.mkSelect(src', "r"), i)))
114 :     end
115 : jhr 1820 | Ty.TensorTy[n, m] => List.concat(List.tabulate(n,
116 : jhr 1818 fn i => List.tabulate (m,
117 :     fn j => CL.mkAssign(
118 :     subscript (dst, i*m + j),
119 : jhr 1820 subscript(CL.mkSelect(subscript (src, i), "r"), j)))))
120 :     | Ty.TensorTy[n, m, l] => List.concat(List.tabulate(n,
121 :     fn i => List.concat(List.tabulate (m,
122 : jhr 1818 fn j => List.tabulate (l,
123 :     fn k => CL.mkAssign(
124 :     subscript(dst, i*m*l + j*l + k),
125 : jhr 1820 subscript(CL.mkSelect(subscript(subscript(src, i), j), "r"), j)))))))
126 : jhr 1818 | Ty.SeqTy(Ty.IntTy, n) => List.tabulate (n,
127 :     fn i => CL.mkAssign(
128 :     subscript (dst, i),
129 :     subscript (CL.mkSelect(src, "i"), i)))
130 : jhr 1820 (* do we make the following types externally visible?
131 : jhr 1818 | Ty.SeqTy(ty, n) =>
132 :     | Ty.DynSeqTy _ =>
133 :     | Ty.AddrTy info =>
134 :     | Ty.ImageTy info =>
135 : jhr 1820 *)
136 : jhr 1818 | _ => raise Fail(concat["CTyTranslate.copyToC(", Ty.toString ty, ")"])
137 :     (* end case *))
138 :    
139 :     (* generate code to copy values from their external C representation to the internal
140 : jhr 1820 * Diderot representation.
141 : jhr 1818 *)
142 :     fun copyFromC {ty, dst, src} = (case ty
143 : jhr 1820 of Ty.BoolTy => [CL.mkAssign(dst, src)]
144 :     | Ty.StringTy => [CL.mkAssign(dst, src)]
145 :     | Ty.IntTy => [CL.mkAssign(dst, src)]
146 : jhr 1857 | Ty.TensorTy[] => [CL.mkAssign(dst, src)]
147 : jhr 1820 | Ty.TensorTy[n] => [CL.mkAssign(
148 : jhr 1858 dst,
149 : jhr 1820 CL.mkApply(N.mkVec n, List.tabulate(n, fn i => subscript(src, i))))]
150 : jhr 1818 | Ty.TensorTy[n, m] => List.tabulate(n,
151 :     fn i => CL.mkAssign(
152 :     CL.mkSelect(subscript(dst, i), "v"),
153 :     CL.mkApply(N.mkVec n, List.tabulate(n, fn j => subscript(src, i*m + j)))))
154 : jhr 1820 | Ty.TensorTy[n, m, l] => List.concat(List.tabulate(n,
155 : jhr 1818 fn i => List.tabulate (m,
156 : jhr 1820 fn j => CL.mkAssign(
157 : jhr 1818 CL.mkSelect(subscript(subscript(dst, i), j), "v"),
158 :     CL.mkApply(N.mkVec n,
159 : jhr 1820 List.tabulate(n, fn k => subscript(src, i*m*l + j*l + k)))))))
160 :     | Ty.SeqTy(Ty.IntTy, n) => [
161 :     CL.mkAssign(
162 :     CL.mkSelect(dst, "v"),
163 :     CL.mkApply(N.mkIVec n, List.tabulate(n, fn i => subscript(src, i))))
164 :     ]
165 :     (* do we make the following types externally visible?
166 : jhr 1818 | Ty.SeqTy(ty, n) =>
167 :     | Ty.DynSeqTy _ =>
168 :     | Ty.AddrTy info =>
169 :     | Ty.ImageTy info =>
170 : jhr 1820 *)
171 : jhr 1818 | _ => raise Fail(concat["CTyTranslate.copyToC(", Ty.toString ty, ")"])
172 :     (* end case *))
173 :    
174 :     end

root@smlnj-gforge.cs.uchicago.edu
ViewVC Help
Powered by ViewVC 1.0.0