int noLineno = 0;
int noAlloc = 0;
symbol *currFunc;
-ast *createIval (ast *, sym_link *, initList *, ast *);
-ast *createIvalCharPtr (ast *, sym_link *, ast *);
+static ast *createIval (ast *, sym_link *, initList *, ast *);
+static ast *createIvalCharPtr (ast *, sym_link *, ast *);
ast *optimizeRRCRLC (ast *);
ast *optimizeGetHbit (ast *);
ast *backPatchLabels (ast *, symbol *, symbol *);
/*-----------------------------------------------------------------*/
-/* newAst - creates a fresh node for an expression tree */
+/* newAst - creates a fresh node for an expression tree */
/*-----------------------------------------------------------------*/
-#if 0
-ast *
-newAst (int type, void *op)
-{
- ast *ex;
- static int oldLineno = 0;
-
- ex = Safe_alloc ( sizeof (ast));
-
- ex->type = type;
- ex->lineno = (noLineno ? oldLineno : yylineno);
- ex->filename = currFname;
- ex->level = NestLevel;
- ex->block = currBlockno;
- ex->initMode = inInitMode;
-
- /* depending on the type */
- switch (type)
- {
- case EX_VALUE:
- ex->opval.val = (value *) op;
- break;
- case EX_OP:
- ex->opval.op = (long) op;
- break;
- case EX_LINK:
- ex->opval.lnk = (sym_link *) op;
- break;
- case EX_STMNT:
- ex->opval.stmnt = (unsigned) op;
- }
-
- return ex;
-}
-#endif
-
static ast *
newAst_ (unsigned type)
{
return 0;
}
-#if 0
-/* this functions seems to be superfluous?! kmh */
-
-/*-----------------------------------------------------------------*/
-/* resolveFromTable - will return the symbal table value */
-/*-----------------------------------------------------------------*/
-value *
-resolveFromTable (value * val)
-{
- symbol *csym;
-
- if (!val->sym)
- return val;
-
- csym = findSymWithLevel (SymbolTab, val->sym);
-
- /* if found in the symbol table & they r not the same */
- if (csym && val->sym != csym &&
- csym->level == val->sym->level &&
- csym->_isparm &&
- !csym->ismyparm)
- {
-
- val->sym = csym;
- val->type = csym->type;
- val->etype = csym->etype;
- }
-
- return val;
-}
-#endif
-
/*-----------------------------------------------------------------*/
/* funcOfType :- function of type with name */
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
/* reverseParms - will reverse a parameter tree */
/*-----------------------------------------------------------------*/
-void
+static void
reverseParms (ast * ptree)
{
ast *ttree;
if (IS_PTR(ftype) && !IS_GENPTR(ftype))
{
newType = newAst_LINK (copyLinkChain(ftype));
- DCL_TYPE (newType->opval.lnk) = GPOINTER;
+ DCL_TYPE (newType->opval.lnk) = port->unqualified_pointer;
}
if (IS_AGGREGATE (ftype))
{
newType = newAst_LINK (copyLinkChain (ftype));
- DCL_TYPE (newType->opval.lnk) = GPOINTER;
+ DCL_TYPE (newType->opval.lnk) = port->unqualified_pointer;
}
if (newType)
{
/*-----------------------------------------------------------------*/
/* createIvalType - generates ival for basic types */
/*-----------------------------------------------------------------*/
-ast *
+static ast *
createIvalType (ast * sym, sym_link * type, initList * ilist)
{
ast *iExpr;
/*-----------------------------------------------------------------*/
/* createIvalStruct - generates initial value for structures */
/*-----------------------------------------------------------------*/
-ast *
+static ast *
createIvalStruct (ast * sym, sym_link * type, initList * ilist)
{
ast *rast = NULL;
/*-----------------------------------------------------------------*/
/* createIvalArray - generates code for array initialization */
/*-----------------------------------------------------------------*/
-ast *
+static ast *
createIvalArray (ast * sym, sym_link * type, initList * ilist)
{
ast *rast = NULL;
/*-----------------------------------------------------------------*/
/* createIvalCharPtr - generates initial values for char pointers */
/*-----------------------------------------------------------------*/
-ast *
+static ast *
createIvalCharPtr (ast * sym, sym_link * type, ast * iexpr)
{
ast *rast = NULL;
/*-----------------------------------------------------------------*/
/* createIvalPtr - generates initial value for pointers */
/*-----------------------------------------------------------------*/
-ast *
+static ast *
createIvalPtr (ast * sym, sym_link * type, initList * ilist)
{
ast *rast;
/*-----------------------------------------------------------------*/
/* createIval - generates code for initial value */
/*-----------------------------------------------------------------*/
-ast *
+static ast *
createIval (ast * sym, sym_link * type, initList * ilist, ast * wid)
{
ast *rast = NULL;
/*-----------------------------------------------------------------*/
/* initAggregates - initialises aggregate variables with initv */
/*-----------------------------------------------------------------*/
-
-/* this has to go */ void printIval (symbol *, sym_link *, initList *, FILE *);
-
ast * initAggregates (symbol * sym, initList * ival, ast * wid) {
- ast *ast;
- symbol *newSym;
-
- if (getenv("TRY_THE_NEW_INITIALIZER")) {
-
- if (!TARGET_IS_MCS51 || !(options.model==MODEL_LARGE)) {
- fprintf (stderr, "Can't \"TRY_THE_NEW_INITIALIZER\" unless "
- "with -mmcs51 and --model-large\n");
- exit(404);
- }
-
- if (SPEC_OCLS(sym->etype)==xdata &&
- getSize(sym->type) > 16) { // else it isn't worth it: do it the old way
-
- // copy this symbol
- newSym=copySymbol (sym);
- SPEC_OCLS(newSym->etype)=code;
- sprintf (newSym->name, "%s_init__", sym->name);
- sprintf (newSym->rname,"%s_init__", sym->rname);
- addSym (SymbolTab, newSym, newSym->name, 0, 0, 1);
-
- // emit it in the static segment
- addSet(&statsg->syms, newSym);
-
- // now memcpy() the entire array from cseg
- ast=newNode (ARRAYINIT, // ASSIGN_AGGREGATE
- newAst_VALUE (symbolVal (sym)),
- newAst_VALUE (symbolVal (newSym)));
- return decorateType(resolveSymbols(ast));
- }
- }
-
return createIval (newAst_VALUE (symbolVal (sym)), sym->type, ival, wid);
}
/* gatherAutoInit - creates assignment expressions for initial */
/* values */
/*-----------------------------------------------------------------*/
-ast *
+static ast *
gatherAutoInit (symbol * autoChain)
{
ast *init = NULL;
{
symbol *newSym;
- // this can only be a constant
- if (!inInitMode && !IS_LITERAL(sym->ival->init.node->etype)) {
- werror (E_CONST_EXPECTED);
- }
-
/* insert the symbol into the symbol table */
/* with level = 0 & name = rname */
newSym = copySymbol (sym);
}
-//#define DEMAND_INTEGER_PROMOTION
-
-#ifdef DEMAND_INTEGER_PROMOTION
-
-/*-----------------------------------------------------------------*/
-/* walk a tree looking for the leaves. Add a typecast to the given */
-/* type to each value leaf node. */
-/*-----------------------------------------------------------------*/
-void
-pushTypeCastToLeaves (sym_link * type, ast * node, ast ** parentPtr)
-{
- if (!node || IS_CALLOP(node))
- {
- /* WTF? We should never get here. */
- return;
- }
-
- if (!node->left && !node->right)
- {
- /* We're at a leaf; if it's a value, apply the typecast */
- if (node->type == EX_VALUE && IS_INTEGRAL (TTYPE (node)))
- {
- *parentPtr = decorateType (newNode (CAST,
- newAst_LINK (copyLinkChain (type)),
- node));
- }
- }
- else
- {
- if (node->left)
- {
- pushTypeCastToLeaves (type, node->left, &(node->left));
- }
- if (node->right)
- {
- pushTypeCastToLeaves (type, node->right, &(node->right));
- }
- }
-}
-
-#endif
-
/*-----------------------------------------------------------------*/
/* decorateType - compute type for this tree also does type cheking */
/* this is done bottom up, since type have to flow upwards */
switch (tree->opval.op)
{
- /*------------------------------------------------------------------*/
- /*----------------------------*/
- /* array node */
- /*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
+ /* array node */
+ /*----------------------------*/
case '[':
/* determine which is the array & which the index */
(tree->right->type == EX_VALUE ?
tree->right->opval.val : NULL));
TETYPE (tree) = getSpec (TTYPE (tree));
+
+ /* adjust the storage class */
+ switch (DCL_TYPE(tree->left->ftype)) {
+ case POINTER:
+ break;
+ case FPOINTER:
+ SPEC_SCLS(TETYPE(tree)) = S_XDATA;
+ break;
+ case CPOINTER:
+ SPEC_SCLS(TETYPE(tree)) = S_CODE;
+ break;
+ case GPOINTER:
+ break;
+ case PPOINTER:
+ SPEC_SCLS(TETYPE(tree)) = S_XSTACK;
+ break;
+ case IPOINTER:
+ SPEC_SCLS(TETYPE(tree)) = S_IDATA;
+ break;
+ case EEPPOINTER:
+ SPEC_SCLS(TETYPE(tree)) = S_EEPROM;
+ break;
+ case UPOINTER:
+ case ARRAY:
+ case FUNCTION:
+ }
+
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* ++/-- operation */
-/*----------------------------*/
+ /*----------------------------*/
case INC_OP: /* incerement operator unary so left only */
case DEC_OP:
{
return tree;
}
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* bitwise and */
-/*----------------------------*/
+ /*----------------------------*/
case '&': /* can be unary */
/* if right is NULL then unary operation */
if (tree->right) /* not an unary operation */
return tree;
}
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* address of */
-/*----------------------------*/
+ /*----------------------------*/
p = newLink ();
p->class = DECLARATOR;
/* if bit field then error */
TLVAL (tree) = 1;
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* bitwise or */
-/*----------------------------*/
+ /*----------------------------*/
case '|':
/* if the rewrite succeeds then don't go any furthur */
{
if (wtree != tree)
return decorateType (wtree);
}
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* bitwise xor */
-/*----------------------------*/
+ /*----------------------------*/
case '^':
if (!IS_INTEGRAL (LTYPE (tree)) || !IS_INTEGRAL (RTYPE (tree)))
{
computeType (LTYPE (tree),
RTYPE (tree)));
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* division */
-/*----------------------------*/
+ /*----------------------------*/
case '/':
if (!IS_ARITHMETIC (LTYPE (tree)) || !IS_ARITHMETIC (RTYPE (tree)))
{
RTYPE (tree)));
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* modulus */
-/*----------------------------*/
+ /*----------------------------*/
case '%':
if (!IS_INTEGRAL (LTYPE (tree)) || !IS_INTEGRAL (RTYPE (tree)))
{
RTYPE (tree)));
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
-/* address dereference */
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
+ /* address dereference */
+ /*----------------------------*/
case '*': /* can be unary : if right is null then unary operation */
if (!tree->right)
{
return tree;
}
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* multiplication */
-/*----------------------------*/
+ /*----------------------------*/
if (!IS_ARITHMETIC (LTYPE (tree)) || !IS_ARITHMETIC (RTYPE (tree)))
{
werror (E_INVALID_OP, "multiplication");
}
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* unary '+' operator */
-/*----------------------------*/
+ /*----------------------------*/
case '+':
/* if unary plus */
if (!tree->right)
return tree;
}
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* addition */
-/*----------------------------*/
+ /*----------------------------*/
/* this is not a unary operation */
/* if both pointers then problem */
RTYPE (tree)));
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* unary '-' */
-/*----------------------------*/
+ /*----------------------------*/
case '-': /* can be unary */
/* if right is null then unary */
if (!tree->right)
return tree;
}
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* subtraction */
-/*----------------------------*/
+ /*----------------------------*/
if (!(IS_PTR (LTYPE (tree)) ||
IS_ARRAY (LTYPE (tree)) ||
LRVAL (tree) = RRVAL (tree) = 1;
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* compliment */
-/*----------------------------*/
+ /*----------------------------*/
case '~':
/* can be only integral type */
if (!IS_INTEGRAL (LTYPE (tree)))
COPYTYPE (TTYPE (tree), TETYPE (tree), LTYPE (tree));
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* not */
-/*----------------------------*/
+ /*----------------------------*/
case '!':
/* can be pointer */
if (!IS_ARITHMETIC (LTYPE (tree)) &&
TTYPE (tree) = TETYPE (tree) = newCharLink ();
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* shift */
-/*----------------------------*/
+ /*----------------------------*/
case RRC:
case RLC:
TTYPE (tree) = LTYPE (tree);
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* logical &&, || */
-/*----------------------------*/
+ /*----------------------------*/
case AND_OP:
case OR_OP:
/* each must me arithmetic type or be a pointer */
TTYPE (tree) = TETYPE (tree) = newCharLink ();
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* comparison operators */
-/*----------------------------*/
+ /*----------------------------*/
case '>':
case '<':
case LE_OP:
goto errorTreeReturn;
}
}
+ /* if unsigned value < 0 then always false */
+ /* if (unsigned value) > 0 then (unsigned value) */
+ if (SPEC_USIGN(LETYPE(tree)) && IS_LITERAL(RTYPE(tree)) &&
+ ((int) floatFromVal (valFromType (RETYPE (tree)))) == 0) {
+ if (tree->opval.op == '<') {
+ return tree->right;
+ }
+ if (tree->opval.op == '>') {
+ return tree->left;
+ }
+ }
/* if they are both literal then */
/* rewrite the tree */
if (IS_LITERAL (RTYPE (tree)) &&
TTYPE (tree) = TETYPE (tree) = newCharLink ();
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* sizeof */
-/*----------------------------*/
+ /*----------------------------*/
case SIZEOF: /* evaluate wihout code generation */
/* change the type to a integer */
tree->type = EX_VALUE;
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* assignment operators */
-/*----------------------------*/
+ /*----------------------------*/
case MUL_ASSIGN:
case DIV_ASSIGN:
/* for these it must be both must be integral */
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* -= operator */
-/*----------------------------*/
+ /*----------------------------*/
case SUB_ASSIGN:
if (!(IS_PTR (LTYPE (tree)) ||
IS_ARITHMETIC (LTYPE (tree))))
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* += operator */
-/*----------------------------*/
+ /*----------------------------*/
case ADD_ASSIGN:
/* this is not a unary operation */
/* if both pointers then problem */
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* straight assignemnt */
-/*----------------------------*/
+ /*----------------------------*/
case '=':
/* cannot be an aggregate */
if (IS_AGGREGATE (LTYPE (tree)))
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* comma operator */
-/*----------------------------*/
+ /*----------------------------*/
case ',':
TETYPE (tree) = getSpec (TTYPE (tree) = RTYPE (tree));
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* function call */
-/*----------------------------*/
+ /*----------------------------*/
case CALL:
parmNumber = 1;
TETYPE (tree) = getSpec (TTYPE (tree) = LTYPE (tree)->next);
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* return statement */
-/*----------------------------*/
+ /*----------------------------*/
case RETURN:
if (!tree->right)
goto voidcheck;
TTYPE (tree) = TETYPE (tree) = NULL;
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* switch statement */
-/*----------------------------*/
+ /*----------------------------*/
case SWITCH:
/* the switch value must be an integer */
if (!IS_INTEGRAL (LTYPE (tree)))
TTYPE (tree) = TETYPE (tree) = NULL;
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* ifx Statement */
-/*----------------------------*/
+ /*----------------------------*/
case IFX:
tree->left = backPatchLabels (tree->left,
tree->trueLabel,
TTYPE (tree) = TETYPE (tree) = NULL;
return tree;
-/*------------------------------------------------------------------*/
-/*----------------------------*/
+ /*------------------------------------------------------------------*/
+ /*----------------------------*/
/* for Statement */
-/*----------------------------*/
+ /*----------------------------*/
case FOR:
decorateType (resolveSymbols (AST_FOR (tree, initExpr)));
vright = (root->right->type == EX_VALUE ?
root->right->opval.val : NULL);
- //#define EXPERIMENTAL
-#ifdef EXPERIMENTAL
- /* if left is unsigned and right is literal */
- if (vleft && vright &&
- IS_UNSIGNED(vleft->etype) &&
- IS_LITERAL(vright->etype)) {
- double dval=floatFromVal(vright);
- int op=root->opval.op;
-
- fprintf (stderr,"op: '");
- switch (op) {
- case LE_OP: fprintf (stderr, "<= '"); break;
- case EQ_OP: fprintf (stderr, "== '"); break;
- case GE_OP: fprintf (stderr, ">= '"); break;
- default: fprintf (stderr, "%c '", op); break;
- }
- fprintf (stderr, "%f\n", dval);
-
- switch (op)
- {
- case EQ_OP:
- case LE_OP:
- case '<':
- if (dval<0 || (op=='<' && dval==0)) {
- // unsigned is never < 0
- werror (W_IF_NEVER_TRUE);
- optExpr = newAst_VALUE (constVal("0"));
- return decorateType (optExpr);
- }
- if (dval==0) {
- if (op==LE_OP) {
- // change this into a cheaper EQ_OP
- fprintf (stderr, "warning *** changed '<=' to '==' because of unsigned\n");
- root->opval.op=EQ_OP;
- return root;
- }
- }
- break;
- case GE_OP:
- case '>':
- if (dval>0 || (op==GE_OP && dval==0)) {
- // unsigned is never < 0
- werror (W_IF_ALWAYS_TRUE);
- optExpr = newAst_VALUE (constVal("1"));
- return decorateType (optExpr);
- }
- if (dval==0) {
- if (op=='>') {
- // change this into a cheaper reversed EQ_OP
- fprintf (stderr, "warning *** changed '>' to '!=' because of unsigned\n");
- root->opval.op=EQ_OP;
- }
- }
- }
- }
-#endif
-
/* if left is a BITVAR in BITSPACE */
/* and right is a LITERAL then opt- */
/* imize else do nothing */
name->lastLine = yylineno;
currFunc = name;
-#if 0 // jwk: this is now done in addDecl()
- processFuncArgs (currFunc);
-#endif
-
/* set the stack pointer */
/* PENDING: check this for the mcs51 */
stackPtr = -port->stack.direction * port->stack.call_overhead;
/* we are done freeup memory & cleanup */
noLineno--;
- labelKey = 1;
+ if (port->reset_labelKey) labelKey = 1;
name->key = 0;
FUNC_HASBODY(name->type) = 1;
addSet (&operKeyReset, name);
projects / fw / sdcc / blobdiff