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| 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 : | |||
| 38 : | jhr | 2024 | (* translate a type to its internal Diderot representation *) |
| 39 : | jhr | 1820 | fun toType ty = (case ty |
| 40 : | jhr | 1818 | of Ty.BoolTy => CL.T_Named "bool" |
| 41 : | jhr | 1820 | | Ty.StringTy => CL.T_Named "Diderot_string_t" |
| 42 : | | Ty.IntTy => CL.T_Named "Diderot_int_t" | ||
| 43 : | | Ty.TensorTy[] => CL.T_Named "Diderot_real_t" | ||
| 44 : | jhr | 1818 | | Ty.TensorTy[n] => CL.T_Named(N.vecTy n) |
| 45 : | | Ty.TensorTy[n, m] => CL.T_Named(N.matTy(n,m)) | ||
| 46 : | | Ty.TensorTy[n, m, l] => CL.T_Named(N.ten3Ty(n,m,l)) | ||
| 47 : | | Ty.SeqTy(Ty.IntTy, n) => CL.T_Named(N.ivecTy n) | ||
| 48 : | jhr | 1820 | | Ty.SeqTy(ty, n) => CL.T_Array(toType ty, SOME n) |
| 49 : | jhr | 1818 | (* do we make the following types externally visible? *) |
| 50 : | | Ty.DynSeqTy _ => CL.T_Ptr(CL.T_Named N.dynSeqTy) | ||
| 51 : | | Ty.AddrTy info => CL.T_Ptr(CL.T_Num(ImageInfo.sampleTy info)) | ||
| 52 : | | Ty.ImageTy info => CL.T_Ptr(CL.T_Named(N.imageTy(ImageInfo.dim info))) | ||
| 53 : | jhr | 1820 | | _ => raise Fail(concat["CTyTranslate.toType(", Ty.toString ty, ")"]) |
| 54 : | jhr | 1818 | (* end case *)) |
| 55 : | |||
| 56 : | jhr | 1820 | (* translate a TreeIL type to the C types used to represent it in the external API *) |
| 57 : | fun toCType ty = (case ty | ||
| 58 : | of Ty.BoolTy => CL.T_Named "bool" | ||
| 59 : | | Ty.StringTy => CL.charPtr | ||
| 60 : | | Ty.IntTy => !N.gIntTy | ||
| 61 : | | Ty.TensorTy[] => !N.gRealTy | ||
| 62 : | | Ty.TensorTy[n] => CL.T_Array(!N.gRealTy, SOME n) | ||
| 63 : | | Ty.TensorTy[n, m] => CL.T_Array(CL.T_Array(!N.gRealTy, SOME n), SOME m) | ||
| 64 : | | Ty.TensorTy[n, m, l] => CL.T_Array(CL.T_Array(CL.T_Array(!N.gRealTy, SOME n), SOME m), SOME l) | ||
| 65 : | | Ty.SeqTy(Ty.IntTy, n) => CL.T_Array(!N.gIntTy, SOME n) | ||
| 66 : | | Ty.SeqTy(ty, n) => CL.T_Array(toCType ty, SOME n) | ||
| 67 : | | Ty.DynSeqTy _ => CL.T_Ptr(CL.T_Named N.dynSeqTy) | ||
| 68 : | | Ty.AddrTy info => CL.T_Ptr(CL.T_Num(ImageInfo.sampleTy info)) | ||
| 69 : | | Ty.ImageTy info => CL.T_Ptr(CL.T_Named(N.imageTy(ImageInfo.dim info))) | ||
| 70 : | | _ => raise Fail(concat["CTyTranslate.toCType(", Ty.toString ty, ")"]) | ||
| 71 : | (* end case *)) | ||
| 72 : | |||
| 73 : | jhr | 1818 | fun subscript (e, i) = CL.mkSubscript(e, CL.mkInt(IntInf.fromInt i)) |
| 74 : | |||
| 75 : | jhr | 1820 | (* we might want to use memcpy in some cases |
| 76 : | fun copy (ty, dst, src) = let | ||
| 77 : | fun assign () = CL.mkAssign(dst, src) | ||
| 78 : | fun addrOf (CL.E_UnOp(CL.%*, x)) = x | ||
| 79 : | | addrOf x = CL.mkUnOp(CL.%&, x) | ||
| 80 : | fun memcpy () = CL.mkCall("memcpy", [addrOf dst, addrOf src, CL.mkSizeof(trType ty)]) | ||
| 81 : | in | ||
| 82 : | case ty | ||
| 83 : | of Ty.BoolTy => assign() | ||
| 84 : | | Ty.StringTy => CL.mkCall("strcpy", [addrOf dst, addrOf src]) | ||
| 85 : | | Ty.IntTy => assign() | ||
| 86 : | | Ty.TensorTy[] => assign() | ||
| 87 : | | Ty.TensorTy _ => memcpy() | ||
| 88 : | | Ty.SeqTy _ => memcpy() | ||
| 89 : | | Ty.DynSeqTy _ => raise Fail "dynamic sequence" | ||
| 90 : | | Ty.ImageTy _ => raise Fail "unexpected image copy" | ||
| 91 : | | _ => raise Fail(concat["bogus input type ", Ty.toString ty]) | ||
| 92 : | (* end case *) | ||
| 93 : | end | ||
| 94 : | *) | ||
| 95 : | |||
| 96 : | jhr | 1818 | (* generate code to copy values from their internal Diderot representation to the external |
| 97 : | jhr | 1820 | * C representation. |
| 98 : | jhr | 1818 | *) |
| 99 : | fun copyToC {ty, dst, src} = (case ty | ||
| 100 : | jhr | 1820 | of Ty.BoolTy => [CL.mkAssign(dst, src)] |
| 101 : | | Ty.StringTy => [CL.mkAssign(dst, src)] | ||
| 102 : | | Ty.IntTy => [CL.mkAssign(dst, src)] | ||
| 103 : | | Ty.TensorTy[] => [CL.mkAssign(dst, src)] | ||
| 104 : | jhr | 1858 | | Ty.TensorTy[n] => let |
| 105 : | val src' = CL.mkCast(CL.T_Named(N.unionTy n), src) | ||
| 106 : | in | ||
| 107 : | List.tabulate (n, | ||
| 108 : | fn i => CL.mkAssign( | ||
| 109 : | subscript (CL.mkUnOp(CL.%&, dst), i), | ||
| 110 : | subscript (CL.mkSelect(src', "r"), i))) | ||
| 111 : | end | ||
| 112 : | jhr | 1820 | | Ty.TensorTy[n, m] => List.concat(List.tabulate(n, |
| 113 : | jhr | 1818 | fn i => List.tabulate (m, |
| 114 : | fn j => CL.mkAssign( | ||
| 115 : | subscript (dst, i*m + j), | ||
| 116 : | jhr | 1820 | subscript(CL.mkSelect(subscript (src, i), "r"), j))))) |
| 117 : | | Ty.TensorTy[n, m, l] => List.concat(List.tabulate(n, | ||
| 118 : | fn i => List.concat(List.tabulate (m, | ||
| 119 : | jhr | 1818 | fn j => List.tabulate (l, |
| 120 : | fn k => CL.mkAssign( | ||
| 121 : | subscript(dst, i*m*l + j*l + k), | ||
| 122 : | jhr | 1820 | subscript(CL.mkSelect(subscript(subscript(src, i), j), "r"), j))))))) |
| 123 : | jhr | 1818 | | Ty.SeqTy(Ty.IntTy, n) => List.tabulate (n, |
| 124 : | fn i => CL.mkAssign( | ||
| 125 : | subscript (dst, i), | ||
| 126 : | subscript (CL.mkSelect(src, "i"), i))) | ||
| 127 : | jhr | 1820 | (* do we make the following types externally visible? |
| 128 : | jhr | 1818 | | Ty.SeqTy(ty, n) => |
| 129 : | | Ty.DynSeqTy _ => | ||
| 130 : | | Ty.AddrTy info => | ||
| 131 : | | Ty.ImageTy info => | ||
| 132 : | jhr | 1820 | *) |
| 133 : | jhr | 1818 | | _ => raise Fail(concat["CTyTranslate.copyToC(", Ty.toString ty, ")"]) |
| 134 : | (* end case *)) | ||
| 135 : | |||
| 136 : | (* generate code to copy values from their external C representation to the internal | ||
| 137 : | jhr | 1820 | * Diderot representation. |
| 138 : | jhr | 1818 | *) |
| 139 : | fun copyFromC {ty, dst, src} = (case ty | ||
| 140 : | jhr | 1820 | of Ty.BoolTy => [CL.mkAssign(dst, src)] |
| 141 : | | Ty.StringTy => [CL.mkAssign(dst, src)] | ||
| 142 : | | Ty.IntTy => [CL.mkAssign(dst, src)] | ||
| 143 : | jhr | 1857 | | Ty.TensorTy[] => [CL.mkAssign(dst, src)] |
| 144 : | jhr | 1820 | | Ty.TensorTy[n] => [CL.mkAssign( |
| 145 : | jhr | 1858 | dst, |
| 146 : | jhr | 1820 | CL.mkApply(N.mkVec n, List.tabulate(n, fn i => subscript(src, i))))] |
| 147 : | jhr | 1818 | | Ty.TensorTy[n, m] => List.tabulate(n, |
| 148 : | fn i => CL.mkAssign( | ||
| 149 : | CL.mkSelect(subscript(dst, i), "v"), | ||
| 150 : | CL.mkApply(N.mkVec n, List.tabulate(n, fn j => subscript(src, i*m + j))))) | ||
| 151 : | jhr | 1820 | | Ty.TensorTy[n, m, l] => List.concat(List.tabulate(n, |
| 152 : | jhr | 1818 | fn i => List.tabulate (m, |
| 153 : | jhr | 1820 | fn j => CL.mkAssign( |
| 154 : | jhr | 1818 | CL.mkSelect(subscript(subscript(dst, i), j), "v"), |
| 155 : | CL.mkApply(N.mkVec n, | ||
| 156 : | jhr | 1820 | List.tabulate(n, fn k => subscript(src, i*m*l + j*l + k))))))) |
| 157 : | | Ty.SeqTy(Ty.IntTy, n) => [ | ||
| 158 : | CL.mkAssign( | ||
| 159 : | CL.mkSelect(dst, "v"), | ||
| 160 : | CL.mkApply(N.mkIVec n, List.tabulate(n, fn i => subscript(src, i)))) | ||
| 161 : | ] | ||
| 162 : | (* do we make the following types externally visible? | ||
| 163 : | jhr | 1818 | | Ty.SeqTy(ty, n) => |
| 164 : | | Ty.DynSeqTy _ => | ||
| 165 : | | Ty.AddrTy info => | ||
| 166 : | | Ty.ImageTy info => | ||
| 167 : | jhr | 1820 | *) |
| 168 : | jhr | 1818 | | _ => raise Fail(concat["CTyTranslate.copyToC(", Ty.toString ty, ")"]) |
| 169 : | (* end case *)) | ||
| 170 : | |||
| 171 : | end |
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