--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dmd2/arrayop.c	Tue Nov 11 01:38:48 2008 +0100
@@ -0,0 +1,494 @@
+
+// Copyright (c) 1999-2008 by Digital Mars
+// All Rights Reserved
+// written by Walter Bright
+// http://www.digitalmars.com
+// License for redistribution is by either the Artistic License
+// in artistic.txt, or the GNU General Public License in gnu.txt.
+// See the included readme.txt for details.
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#if _WIN32 || IN_GCC  || IN_LLVM
+#include "mem.h"
+#else
+#include "../root/mem.h"
+#endif
+
+#include "stringtable.h"
+
+#include "expression.h"
+#include "statement.h"
+#include "mtype.h"
+#include "declaration.h"
+#include "scope.h"
+#include "id.h"
+#include "module.h"
+#include "init.h"
+
+
+/***********************************
+ * Construct the array operation expression.
+ */
+
+Expression *BinExp::arrayOp(Scope *sc)
+{
+    Expressions *arguments = new Expressions();
+
+    /* The expression to generate an array operation for is mangled
+     * into a name to use as the array operation function name.
+     * Mangle in the operands and operators in RPN order, and type.
+     */
+    OutBuffer buf;
+    buf.writestring("_array");
+    buildArrayIdent(&buf, arguments);
+    buf.writeByte('_');
+
+    /* Append deco of array element type
+     */
+#if DMDV2
+    buf.writestring(type->toBasetype()->nextOf()->toBasetype()->mutableOf()->deco);
+#else
+    buf.writestring(type->toBasetype()->nextOf()->toBasetype()->deco);
+#endif
+
+    size_t namelen = buf.offset;
+    buf.writeByte(0);
+    char *name = (char *)buf.extractData();
+
+    /* Look up name in hash table
+     */
+    StringValue *sv = sc->module->arrayfuncs.update(name, namelen);
+    FuncDeclaration *fd = (FuncDeclaration *)sv->ptrvalue;
+    if (!fd)
+    {
+//     /* Some of the array op functions are written as library functions,
+//      * presumably to optimize them with special CPU vector instructions.
+//      * List those library functions here, in alpha order.
+//      */
+//     static const char *libArrayopFuncs[] =
+//     {
+//         "_arrayExpSliceAddass_a",
+//         "_arrayExpSliceAddass_d",       // T[]+=T
+//         "_arrayExpSliceAddass_f",       // T[]+=T
+//         "_arrayExpSliceAddass_g",
+//         "_arrayExpSliceAddass_h",
+//         "_arrayExpSliceAddass_i",
+//         "_arrayExpSliceAddass_k",
+//         "_arrayExpSliceAddass_s",
+//         "_arrayExpSliceAddass_t",
+//         "_arrayExpSliceAddass_u",
+//         "_arrayExpSliceAddass_w",
+// 
+//         "_arrayExpSliceDivass_d",       // T[]/=T
+//         "_arrayExpSliceDivass_f",       // T[]/=T
+// 
+//         "_arrayExpSliceMinSliceAssign_a",
+//         "_arrayExpSliceMinSliceAssign_d",   // T[]=T-T[]
+//         "_arrayExpSliceMinSliceAssign_f",   // T[]=T-T[]
+//         "_arrayExpSliceMinSliceAssign_g",
+//         "_arrayExpSliceMinSliceAssign_h",
+//         "_arrayExpSliceMinSliceAssign_i",
+//         "_arrayExpSliceMinSliceAssign_k",
+//         "_arrayExpSliceMinSliceAssign_s",
+//         "_arrayExpSliceMinSliceAssign_t",
+//         "_arrayExpSliceMinSliceAssign_u",
+//         "_arrayExpSliceMinSliceAssign_w",
+// 
+//         "_arrayExpSliceMinass_a",
+//         "_arrayExpSliceMinass_d",       // T[]-=T
+//         "_arrayExpSliceMinass_f",       // T[]-=T
+//         "_arrayExpSliceMinass_g",
+//         "_arrayExpSliceMinass_h",
+//         "_arrayExpSliceMinass_i",
+//         "_arrayExpSliceMinass_k",
+//         "_arrayExpSliceMinass_s",
+//         "_arrayExpSliceMinass_t",
+//         "_arrayExpSliceMinass_u",
+//         "_arrayExpSliceMinass_w",
+// 
+//         "_arrayExpSliceMulass_d",       // T[]*=T
+//         "_arrayExpSliceMulass_f",       // T[]*=T
+//         "_arrayExpSliceMulass_i",
+//         "_arrayExpSliceMulass_k",
+//         "_arrayExpSliceMulass_s",
+//         "_arrayExpSliceMulass_t",
+//         "_arrayExpSliceMulass_u",
+//         "_arrayExpSliceMulass_w",
+// 
+//         "_arraySliceExpAddSliceAssign_a",
+//         "_arraySliceExpAddSliceAssign_d",   // T[]=T[]+T
+//         "_arraySliceExpAddSliceAssign_f",   // T[]=T[]+T
+//         "_arraySliceExpAddSliceAssign_g",
+//         "_arraySliceExpAddSliceAssign_h",
+//         "_arraySliceExpAddSliceAssign_i",
+//         "_arraySliceExpAddSliceAssign_k",
+//         "_arraySliceExpAddSliceAssign_s",
+//         "_arraySliceExpAddSliceAssign_t",
+//         "_arraySliceExpAddSliceAssign_u",
+//         "_arraySliceExpAddSliceAssign_w",
+// 
+//         "_arraySliceExpDivSliceAssign_d",   // T[]=T[]/T
+//         "_arraySliceExpDivSliceAssign_f",   // T[]=T[]/T
+// 
+//         "_arraySliceExpMinSliceAssign_a",
+//         "_arraySliceExpMinSliceAssign_d",   // T[]=T[]-T
+//         "_arraySliceExpMinSliceAssign_f",   // T[]=T[]-T
+//         "_arraySliceExpMinSliceAssign_g",
+//         "_arraySliceExpMinSliceAssign_h",
+//         "_arraySliceExpMinSliceAssign_i",
+//         "_arraySliceExpMinSliceAssign_k",
+//         "_arraySliceExpMinSliceAssign_s",
+//         "_arraySliceExpMinSliceAssign_t",
+//         "_arraySliceExpMinSliceAssign_u",
+//         "_arraySliceExpMinSliceAssign_w",
+// 
+//         "_arraySliceExpMulSliceAddass_d",   // T[] += T[]*T
+//         "_arraySliceExpMulSliceAddass_f",
+//         "_arraySliceExpMulSliceAddass_r",
+// 
+//         "_arraySliceExpMulSliceAssign_d",   // T[]=T[]*T
+//         "_arraySliceExpMulSliceAssign_f",   // T[]=T[]*T
+//         "_arraySliceExpMulSliceAssign_i",
+//         "_arraySliceExpMulSliceAssign_k",
+//         "_arraySliceExpMulSliceAssign_s",
+//         "_arraySliceExpMulSliceAssign_t",
+//         "_arraySliceExpMulSliceAssign_u",
+//         "_arraySliceExpMulSliceAssign_w",
+// 
+//         "_arraySliceExpMulSliceMinass_d",   // T[] -= T[]*T
+//         "_arraySliceExpMulSliceMinass_f",
+//         "_arraySliceExpMulSliceMinass_r",
+// 
+//         "_arraySliceSliceAddSliceAssign_a",
+//         "_arraySliceSliceAddSliceAssign_d", // T[]=T[]+T[]
+//         "_arraySliceSliceAddSliceAssign_f", // T[]=T[]+T[]
+//         "_arraySliceSliceAddSliceAssign_g",
+//         "_arraySliceSliceAddSliceAssign_h",
+//         "_arraySliceSliceAddSliceAssign_i",
+//         "_arraySliceSliceAddSliceAssign_k",
+//         "_arraySliceSliceAddSliceAssign_r", // T[]=T[]+T[]
+//         "_arraySliceSliceAddSliceAssign_s",
+//         "_arraySliceSliceAddSliceAssign_t",
+//         "_arraySliceSliceAddSliceAssign_u",
+//         "_arraySliceSliceAddSliceAssign_w",
+// 
+//         "_arraySliceSliceAddass_a",
+//         "_arraySliceSliceAddass_d",     // T[]+=T[]
+//         "_arraySliceSliceAddass_f",     // T[]+=T[]
+//         "_arraySliceSliceAddass_g",
+//         "_arraySliceSliceAddass_h",
+//         "_arraySliceSliceAddass_i",
+//         "_arraySliceSliceAddass_k",
+//         "_arraySliceSliceAddass_s",
+//         "_arraySliceSliceAddass_t",
+//         "_arraySliceSliceAddass_u",
+//         "_arraySliceSliceAddass_w",
+// 
+//         "_arraySliceSliceMinSliceAssign_a",
+//         "_arraySliceSliceMinSliceAssign_d", // T[]=T[]-T[]
+//         "_arraySliceSliceMinSliceAssign_f", // T[]=T[]-T[]
+//         "_arraySliceSliceMinSliceAssign_g",
+//         "_arraySliceSliceMinSliceAssign_h",
+//         "_arraySliceSliceMinSliceAssign_i",
+//         "_arraySliceSliceMinSliceAssign_k",
+//         "_arraySliceSliceMinSliceAssign_r", // T[]=T[]-T[]
+//         "_arraySliceSliceMinSliceAssign_s",
+//         "_arraySliceSliceMinSliceAssign_t",
+//         "_arraySliceSliceMinSliceAssign_u",
+//         "_arraySliceSliceMinSliceAssign_w",
+// 
+//         "_arraySliceSliceMinass_a",
+//         "_arraySliceSliceMinass_d",     // T[]-=T[]
+//         "_arraySliceSliceMinass_f",     // T[]-=T[]
+//         "_arraySliceSliceMinass_g",
+//         "_arraySliceSliceMinass_h",
+//         "_arraySliceSliceMinass_i",
+//         "_arraySliceSliceMinass_k",
+//         "_arraySliceSliceMinass_s",
+//         "_arraySliceSliceMinass_t",
+//         "_arraySliceSliceMinass_u",
+//         "_arraySliceSliceMinass_w",
+// 
+//         "_arraySliceSliceMulSliceAssign_d", // T[]=T[]*T[]
+//         "_arraySliceSliceMulSliceAssign_f", // T[]=T[]*T[]
+//         "_arraySliceSliceMulSliceAssign_i",
+//         "_arraySliceSliceMulSliceAssign_k",
+//         "_arraySliceSliceMulSliceAssign_s",
+//         "_arraySliceSliceMulSliceAssign_t",
+//         "_arraySliceSliceMulSliceAssign_u",
+//         "_arraySliceSliceMulSliceAssign_w",
+// 
+//         "_arraySliceSliceMulass_d",     // T[]*=T[]
+//         "_arraySliceSliceMulass_f",     // T[]*=T[]
+//         "_arraySliceSliceMulass_i",
+//         "_arraySliceSliceMulass_k",
+//         "_arraySliceSliceMulass_s",
+//         "_arraySliceSliceMulass_t",
+//         "_arraySliceSliceMulass_u",
+//         "_arraySliceSliceMulass_w",
+//     };
+// 
+//     int i = binary(name, libArrayopFuncs, sizeof(libArrayopFuncs) / sizeof(char *));
+//     if (i == -1)
+//     {
+// #ifdef DEBUG    // Make sure our array is alphabetized
+//         for (i = 0; i < sizeof(libArrayopFuncs) / sizeof(char *); i++)
+//         {
+//         if (strcmp(name, libArrayopFuncs[i]) == 0)
+//             assert(0);
+//         }
+// #endif
+
+        /* Not in library, so generate it.
+         * Construct the function body:
+         *  foreach (i; 0 .. p.length)    for (size_t i = 0; i < p.length; i++)
+         *      loopbody;
+         *  return p;
+         */
+
+        Arguments *fparams = new Arguments();
+        Expression *loopbody = buildArrayLoop(fparams);
+        Argument *p = (Argument *)fparams->data[0 /*fparams->dim - 1*/];
+#if DMDV1
+        // for (size_t i = 0; i < p.length; i++)
+        Initializer *init = new ExpInitializer(0, new IntegerExp(0, 0, Type::tsize_t));
+        Dsymbol *d = new VarDeclaration(0, Type::tsize_t, Id::p, init);
+        Statement *s1 = new ForStatement(0,
+        new DeclarationStatement(0, d),
+        new CmpExp(TOKlt, 0, new IdentifierExp(0, Id::p), new ArrayLengthExp(0, new IdentifierExp(0, p->ident))),
+        new PostExp(TOKplusplus, 0, new IdentifierExp(0, Id::p)),
+        new ExpStatement(0, loopbody));
+#else
+        // foreach (i; 0 .. p.length)
+        Statement *s1 = new ForeachRangeStatement(0, TOKforeach,
+        new Argument(0, NULL, Id::p, NULL),
+        new IntegerExp(0, 0, Type::tint32),
+        new ArrayLengthExp(0, new IdentifierExp(0, p->ident)),
+        new ExpStatement(0, loopbody));
+#endif
+        Statement *s2 = new ReturnStatement(0, new IdentifierExp(0, p->ident));
+        //printf("s2: %s\n", s2->toChars());
+        Statement *fbody = new CompoundStatement(0, s1, s2);
+
+        /* Construct the function
+         */
+        TypeFunction *ftype = new TypeFunction(fparams, type, 0, LINKc);
+        //printf("ftype: %s\n", ftype->toChars());
+        fd = new FuncDeclaration(0, 0, Lexer::idPool(name), STCundefined, ftype);
+        fd->fbody = fbody;
+        fd->protection = PROTprotected;
+        fd->linkage = LINKd;
+
+        // special attention for array ops
+        fd->isArrayOp = true;
+
+        sc->module->members->push(fd);
+
+        sc = sc->push();
+        sc->parent = sc->module;
+        sc->stc = 0;
+        sc->linkage = LINKd;
+        fd->semantic(sc);
+        sc->pop();
+//     }
+//     else
+//     {   /* In library, refer to it.
+//          */
+//         // FIXME
+//         fd = FuncDeclaration::genCfunc(NULL, type, name);
+//     }
+    sv->ptrvalue = fd;  // cache symbol in hash table
+    }
+
+    /* Call the function fd(arguments)
+     */
+    Expression *ec = new VarExp(0, fd);
+    Expression *e = new CallExp(loc, ec, arguments);
+    e->type = type;
+    return e;
+}
+
+/******************************************
+ * Construct the identifier for the array operation function,
+ * and build the argument list to pass to it.
+ */
+
+void Expression::buildArrayIdent(OutBuffer *buf, Expressions *arguments)
+{
+    buf->writestring("Exp");
+    arguments->shift(this);
+}
+
+void SliceExp::buildArrayIdent(OutBuffer *buf, Expressions *arguments)
+{
+    buf->writestring("Slice");
+    arguments->shift(this);
+}
+
+void AssignExp::buildArrayIdent(OutBuffer *buf, Expressions *arguments)
+{
+    /* Evaluate assign expressions right to left
+     */
+    e2->buildArrayIdent(buf, arguments);
+    e1->buildArrayIdent(buf, arguments);
+    buf->writestring("Assign");
+}
+
+#define X(Str) \
+void Str##AssignExp::buildArrayIdent(OutBuffer *buf, Expressions *arguments) \
+{							\
+    /* Evaluate assign expressions right to left	\
+     */							\
+    e2->buildArrayIdent(buf, arguments);		\
+    e1->buildArrayIdent(buf, arguments);		\
+    buf->writestring(#Str);				\
+    buf->writestring("ass");				\
+}
+
+X(Add)
+X(Min)
+X(Mul)
+X(Div)
+X(Mod)
+X(Xor)
+X(And)
+X(Or)
+
+#undef X
+
+void NegExp::buildArrayIdent(OutBuffer *buf, Expressions *arguments)
+{
+    e1->buildArrayIdent(buf, arguments);
+    buf->writestring("Neg");
+}
+
+void ComExp::buildArrayIdent(OutBuffer *buf, Expressions *arguments)
+{
+    e1->buildArrayIdent(buf, arguments);
+    buf->writestring("Com");
+}
+
+#define X(Str) \
+void Str##Exp::buildArrayIdent(OutBuffer *buf, Expressions *arguments)	\
+{									\
+    /* Evaluate assign expressions left to right			\
+     */									\
+    e1->buildArrayIdent(buf, arguments);				\
+    e2->buildArrayIdent(buf, arguments);				\
+    buf->writestring(#Str);						\
+}
+
+X(Add)
+X(Min)
+X(Mul)
+X(Div)
+X(Mod)
+X(Xor)
+X(And)
+X(Or)
+
+#undef X
+
+/******************************************
+ * Construct the inner loop for the array operation function,
+ * and build the parameter list.
+ */
+
+Expression *Expression::buildArrayLoop(Arguments *fparams)
+{
+    Identifier *id = Identifier::generateId("c", fparams->dim);
+    Argument *param = new Argument(0, type, id, NULL);
+    fparams->shift(param);
+    Expression *e = new IdentifierExp(0, id);
+    return e;
+}
+
+Expression *SliceExp::buildArrayLoop(Arguments *fparams)
+{
+    Identifier *id = Identifier::generateId("p", fparams->dim);
+    Argument *param = new Argument(STCconst, type, id, NULL);
+    fparams->shift(param);
+    Expression *e = new IdentifierExp(0, id);
+    Expressions *arguments = new Expressions();
+    Expression *index = new IdentifierExp(0, Id::p);
+    arguments->push(index);
+    e = new ArrayExp(0, e, arguments);
+    return e;
+}
+
+Expression *AssignExp::buildArrayLoop(Arguments *fparams)
+{
+    /* Evaluate assign expressions right to left
+     */
+    Expression *ex2 = e2->buildArrayLoop(fparams);
+    Expression *ex1 = e1->buildArrayLoop(fparams);
+    Argument *param = (Argument *)fparams->data[0];
+    param->storageClass = 0;
+    Expression *e = new AssignExp(0, ex1, ex2);
+    return e;
+}
+
+#define X(Str) \
+Expression *Str##AssignExp::buildArrayLoop(Arguments *fparams)	\
+{								\
+    /* Evaluate assign expressions right to left		\
+     */								\
+    Expression *ex2 = e2->buildArrayLoop(fparams);		\
+    Expression *ex1 = e1->buildArrayLoop(fparams);		\
+    Argument *param = (Argument *)fparams->data[0];		\
+    param->storageClass = 0;					\
+    Expression *e = new Str##AssignExp(0, ex1, ex2);		\
+    return e;							\
+}
+
+X(Add)
+X(Min)
+X(Mul)
+X(Div)
+X(Mod)
+X(Xor)
+X(And)
+X(Or)
+
+#undef X
+
+Expression *NegExp::buildArrayLoop(Arguments *fparams)
+{
+    Expression *ex1 = e1->buildArrayLoop(fparams);
+    Expression *e = new NegExp(0, ex1);
+    return e;
+}
+
+Expression *ComExp::buildArrayLoop(Arguments *fparams)
+{
+    Expression *ex1 = e1->buildArrayLoop(fparams);
+    Expression *e = new ComExp(0, ex1);
+    return e;
+}
+
+#define X(Str) \
+Expression *Str##Exp::buildArrayLoop(Arguments *fparams)	\
+{								\
+    /* Evaluate assign expressions left to right		\
+     */								\
+    Expression *ex1 = e1->buildArrayLoop(fparams);		\
+    Expression *ex2 = e2->buildArrayLoop(fparams);		\
+    Expression *e = new Str##Exp(0, ex1, ex2);			\
+    return e;							\
+}
+
+X(Add)
+X(Min)
+X(Mul)
+X(Div)
+X(Mod)
+X(Xor)
+X(And)
+X(Or)
+
+#undef X
+
+