int lineno;
int block;
int scopeLevel;
+int seqPoint;
symbol *returnLabel; /* function return label */
symbol *entryLabel; /* function entry label */
operand *geniCodeDerefPtr (operand *,int);
int isLvaluereq(int lvl);
void setOClass (sym_link * ptr, sym_link * spec);
+static operand *geniCodeCast (sym_link *, operand *, bool);
#define PRINTFUNC(x) void x (FILE *of, iCode *ic, char *s)
/* forward definition of ic print functions */
max = pow ((double)2.0, (double)bitsForType(ltype));
- if (SPEC_LONG(val->type)) {
- if (SPEC_USIGN(val->type)) {
+ if (IS_LONG(val->type)) {
+ if (IS_UNSIGNED(val->type)) {
v=SPEC_CVAL(val->type).v_ulong;
} else {
v=SPEC_CVAL(val->type).v_long;
}
} else {
- if (SPEC_USIGN(val->type)) {
+ if (IS_UNSIGNED(val->type)) {
v=SPEC_CVAL(val->type).v_uint;
} else {
v=SPEC_CVAL(val->type).v_int;
pedantic=2;
#endif
- if (SPEC_NOUN(ltype)==FLOAT) {
+ if (IS_FLOAT(ltype)) {
// anything will do
return;
}
- if (!SPEC_USIGN(val->type) && v<0) {
+ if (!IS_UNSIGNED(val->type) && v<0) {
negative=1;
- if (SPEC_USIGN(ltype) && (pedantic>1)) {
+ if (IS_UNSIGNED(ltype) && (pedantic>1)) {
warnings++;
}
v=-v;
}
// if very pedantic: "char c=200" is not allowed
- if (pedantic>1 && !SPEC_USIGN(ltype)) {
+ if (pedantic>1 && !IS_UNSIGNED(ltype)) {
max = max/2 + negative;
}
#if 0 // temporary disabled, leaving the warning as a reminder
if (warnings) {
SNPRINTF (message, sizeof(message), "for %s %s in %s",
- SPEC_USIGN(ltype) ? "unsigned" : "signed",
+ IS_UNSIGNED(ltype) ? "unsigned" : "signed",
nounName(ltype), msg);
werror (W_CONST_RANGE, message);
case VALUE:
opetype = getSpec (operandType (op));
- if (SPEC_NOUN (opetype) == V_FLOAT)
+ if (IS_FLOAT (opetype))
fprintf (file, "%g {", SPEC_CVAL (opetype).v_float);
else
fprintf (file, "0x%x {", (unsigned) floatFromVal (op->operand.valOperand));
ic = Safe_alloc ( sizeof (iCode));
+ ic->seqPoint = seqPoint;
ic->lineno = lineno;
ic->filename = filename;
ic->block = block;
ic = ic->next;
(*pcount)++;
}
-
+
ic->generated = 1;
/* make sure this is a builtin function call */
assert(IS_SYMOP(IC_LEFT(ic)));
!IS_SPEC (type))
{
/* long is handled here, because it can overflow with double */
- if (SPEC_LONG (type) ||
+ if (IS_LONG (type) ||
!IS_SPEC (type))
/* signed and unsigned mul are the same, as long as the precision
of the result isn't bigger than the precision of the operands. */
retval = operandFromValue (valCastLiteral (type,
(TYPE_UDWORD) operandLitValue (left) *
(TYPE_UDWORD) operandLitValue (right)));
- else if (SPEC_USIGN (type)) /* unsigned int */
+ else if (IS_UNSIGNED (type)) /* unsigned int */
{
/* unsigned int is handled here in order to detect overflow */
TYPE_UDWORD ul = (TYPE_UWORD) operandLitValue (left) *
}
else
- retval = operandFromValue (valCastLiteral (type,
- operandLitValue (left) /
- operandLitValue (right)));
+ {
+ if (IS_UNSIGNED (type))
+ {
+ SPEC_USIGN (let) = 1;
+ SPEC_USIGN (ret) = 1;
+ retval = operandFromValue (valCastLiteral (type,
+ (TYPE_UDWORD) operandLitValue (left) /
+ (TYPE_UDWORD) operandLitValue (right)));
+ }
+ else
+ {
+ retval = operandFromValue (valCastLiteral (type,
+ operandLitValue (left) /
+ operandLitValue (right)));
+ }
+ }
break;
case '%':
- if ((TYPE_UDWORD) operandLitValue (right) == 0) {
+ if ((TYPE_UDWORD) operandLitValue (right) == 0)
+ {
werror (E_DIVIDE_BY_ZERO);
retval = right;
- }
+ }
else
{
- if (SPEC_USIGN(let) || SPEC_USIGN(ret))
- /* one of the operands is unsigned */
+ if (IS_UNSIGNED (type))
retval = operandFromLit ((TYPE_UDWORD) operandLitValue (left) %
(TYPE_UDWORD) operandLitValue (right));
else
- /* both operands are signed */
retval = operandFromLit ((TYPE_DWORD) operandLitValue (left) %
(TYPE_DWORD) operandLitValue (right));
}
case RIGHT_OP:
/* The number of right shifts is always unsigned. Signed doesn't make
sense here. Shifting by a negative number is impossible. */
- if (SPEC_USIGN(let))
+ if (IS_UNSIGNED(let))
/* unsigned: logic shift right */
retval = operandFromLit ((TYPE_UDWORD) operandLitValue (left) >>
(TYPE_UDWORD) operandLitValue (right));
TYPE_UDWORD l, r;
l = (TYPE_UDWORD) operandLitValue (left);
- if (SPEC_NOUN(OP_VALUE(left)->type) == V_CHAR)
+ if (IS_CHAR(OP_VALUE(left)->type))
l &= 0xff;
- else if (!SPEC_LONG (OP_VALUE(left)->type))
+ else if (!IS_LONG (OP_VALUE(left)->type))
l &= 0xffff;
r = (TYPE_UDWORD) operandLitValue (right);
- if (SPEC_NOUN(OP_VALUE(right)->type) == V_CHAR)
+ if (IS_CHAR(OP_VALUE(right)->type))
r &= 0xff;
- else if (!SPEC_LONG (OP_VALUE(right)->type))
+ else if (!IS_LONG (OP_VALUE(right)->type))
r &= 0xffff;
retval = operandFromLit (l == r);
}
nop->isLiteral = op->isLiteral;
nop->usesDefs = op->usesDefs;
nop->isParm = op->isParm;
-
+
switch (nop->type)
{
case SYMBOL:
/*-----------------------------------------------------------------*/
/* perform "usual binary conversions" */
/*-----------------------------------------------------------------*/
-sym_link *
-usualBinaryConversions (operand ** op1, operand ** op2)
+static sym_link *
+usualBinaryConversions (operand ** op1, operand ** op2,
+ bool promoteCharToInt, bool isMul)
{
sym_link *ctype;
sym_link *rtype = operandType (*op2);
sym_link *ltype = operandType (*op1);
-
- ctype = computeType (ltype, rtype);
+
+ ctype = computeType (ltype, rtype, promoteCharToInt);
+
+ /* special for multiplication:
+ This if for 'mul a,b', which takes two chars and returns an int */
+ if ( isMul
+ /* && promoteCharToInt superfluous, already handled by computeType() */
+ && IS_CHAR (getSpec (ltype))
+ && IS_CHAR (getSpec (rtype))
+ && !(IS_UNSIGNED (getSpec (rtype)) ^ IS_UNSIGNED (getSpec (ltype)))
+ && IS_INT (getSpec (ctype)))
+ return ctype;
*op1 = geniCodeCast (ctype, *op1, TRUE);
*op2 = geniCodeCast (ctype, *op2, TRUE);
-
+
return ctype;
}
/*-----------------------------------------------------------------*/
/* geniCodeCast - changes the value from one type to another */
/*-----------------------------------------------------------------*/
-operand *
+static operand *
geniCodeCast (sym_link * type, operand * op, bool implicit)
{
iCode *ic;
/* if this is a literal then just change the type & return */
if (IS_LITERAL (opetype) && op->type == VALUE && !IS_PTR (type) && !IS_PTR (optype))
- return operandFromValue (valCastLiteral (type,
- operandLitValue (op)));
+ {
+ return operandFromValue (valCastLiteral (type,
+ operandLitValue (op)));
+ }
/* if casting to/from pointers, do some checking */
if (IS_PTR(type)) { // to a pointer
if (!IS_PTR(optype) && !IS_FUNC(optype) && !IS_AGGREGATE(optype)) { // from a non pointer
- if (IS_INTEGRAL(optype)) {
- // maybe this is NULL, than it's ok.
+ if (IS_INTEGRAL(optype)) {
+ // maybe this is NULL, than it's ok.
if (!(IS_LITERAL(optype) && (SPEC_CVAL(optype).v_ulong ==0))) {
if (port->s.gptr_size > port->s.fptr_size && IS_GENPTR(type)) {
// no way to set the storage
errors++;
}
}
- } else {
+ } else {
// shouldn't do that with float, array or structure unless to void
- if (!IS_VOID(getSpec(type)) &&
+ if (!IS_VOID(getSpec(type)) &&
!(IS_CODEPTR(type) && IS_FUNC(type->next) && IS_FUNC(optype))) {
werror(E_INCOMPAT_TYPES);
errors++;
if (port->s.gptr_size > port->s.fptr_size /*!TARGET_IS_Z80 && !TARGET_IS_GBZ80*/) {
// if not a pointer to a function
if (!(IS_CODEPTR(type) && IS_FUNC(type->next) && IS_FUNC(optype))) {
- if (implicit) { // if not to generic, they have to match
+ if (implicit) { // if not to generic, they have to match
if ((!IS_GENPTR(type) && (DCL_TYPE(optype) != DCL_TYPE(type)))) {
werror(E_INCOMPAT_PTYPES);
errors++;
((IS_SPEC (type) && IS_SPEC (optype)) ||
(!IS_SPEC (type) && !IS_SPEC (optype))))
{
-
ic = newiCode ('=', NULL, op);
IC_RESULT (ic) = newiTempOperand (type, 0);
SPIL_LOC (IC_RESULT (ic)) =
- (IS_TRUE_SYMOP (op) ? OP_SYMBOL (op) : NULL);
+ (IS_TRUE_SYMOP (op) ? OP_SYMBOL (op) : NULL);
IC_RESULT (ic)->isaddr = 0;
}
else
/*-----------------------------------------------------------------*/
/* geniCodeLabel - will create a Label */
/*-----------------------------------------------------------------*/
-void
+void
geniCodeLabel (symbol * label)
{
iCode *ic;
/*-----------------------------------------------------------------*/
/* geniCodeGoto - will create a Goto */
/*-----------------------------------------------------------------*/
-void
+void
geniCodeGoto (symbol * label)
{
iCode *ic;
/* geniCodeMultiply - gen intermediate code for multiplication */
/*-----------------------------------------------------------------*/
operand *
-geniCodeMultiply (operand * left, operand * right,int resultIsInt)
+geniCodeMultiply (operand * left, operand * right, int resultIsInt)
{
iCode *ic;
int p2 = 0;
right->operand.valOperand));
if (IS_LITERAL(retype)) {
- p2 = powof2 ((unsigned long) floatFromVal (right->operand.valOperand));
+ p2 = powof2 ((TYPE_UDWORD) floatFromVal (right->operand.valOperand));
}
- resType = usualBinaryConversions (&left, &right);
+ resType = usualBinaryConversions (&left, &right, resultIsInt, TRUE);
#if 1
rtype = operandType (right);
retype = getSpec (rtype);
ltype = operandType (left);
letype = getSpec (ltype);
#endif
- if (resultIsInt)
- {
- SPEC_NOUN(getSpec(resType))=V_INT;
- }
/* if the right is a literal & power of 2 */
/* then make it a left shift */
sym_link *ltype = operandType (left);
sym_link *letype = getSpec (ltype);
- resType = usualBinaryConversions (&left, &right);
+ resType = usualBinaryConversions (&left, &right, TRUE, FALSE);
/* if the right is a literal & power of 2
and left is unsigned then make it a
right shift */
if (IS_LITERAL (retype) &&
!IS_FLOAT (letype) &&
- SPEC_USIGN(letype) &&
- (p2 = powof2 ((unsigned long)
+ IS_UNSIGNED(letype) &&
+ (p2 = powof2 ((TYPE_UDWORD)
floatFromVal (right->operand.valOperand)))) {
ic = newiCode (RIGHT_OP, left, operandFromLit (p2)); /* right shift */
}
return operandFromValue (valMod (left->operand.valOperand,
right->operand.valOperand));
- resType = usualBinaryConversions (&left, &right);
+ resType = usualBinaryConversions (&left, &right, TRUE, FALSE);
/* now they are the same size */
ic = newiCode ('%', left, right);
}
else
{ /* make them the same size */
- resType = usualBinaryConversions (&left, &right);
+ resType = usualBinaryConversions (&left, &right, FALSE, FALSE);
}
ic = newiCode ('-', left, right);
sym_link *resType;
operand *size;
int isarray = 0;
+ bool indexUnsigned;
LRTYPE;
/* if the right side is LITERAL zero */
/* return the left side */
- if (IS_LITERAL (retype) && right->isLiteral && !floatFromVal (valFromType (retype)))
+ if (IS_LITERAL (retype) && right->isLiteral && !floatFromVal (valFromType (rtype)))
return left;
/* if left is literal zero return right */
- if (IS_LITERAL (letype) && left->isLiteral && !floatFromVal (valFromType (letype)))
+ if (IS_LITERAL (letype) && left->isLiteral && !floatFromVal (valFromType (ltype)))
return right;
/* if left is a pointer then size */
{
isarray = left->isaddr;
// there is no need to multiply with 1
- if (getSize(ltype->next)!=1) {
- size = operandFromLit (getSize (ltype->next));
- right = geniCodeMultiply (right, size, (getArraySizePtr(left) >= INTSIZE));
- }
+ if (getSize (ltype->next) != 1)
+ {
+ size = operandFromLit (getSize (ltype->next));
+ indexUnsigned = IS_UNSIGNED (getSpec (operandType (right)));
+ right = geniCodeMultiply (right, size, (getArraySizePtr(left) >= INTSIZE));
+ /* Even if right is a 'unsigned char',
+ the result will be a 'signed int' due to the promotion rules.
+ It doesn't make sense when accessing arrays, so let's fix it here: */
+ if (indexUnsigned)
+ SPEC_USIGN (getSpec (operandType (right))) = 1;
+ }
resType = copyLinkChain (ltype);
}
else
{ // make them the same size
- resType = usualBinaryConversions (&left, &right);
+ resType = usualBinaryConversions (&left, &right, FALSE, FALSE);
}
/* if they are both literals then we know */
if (IS_LITERAL (letype) && IS_LITERAL (retype)
&& left->isLiteral && right->isLiteral)
- return operandFromValue (valPlus (valFromType (letype),
- valFromType (retype)));
+ return operandFromValue (valPlus (valFromType (ltype),
+ valFromType (rtype)));
ic = newiCode ('+', left, right);
{
iCode *ic;
sym_link *ltype = operandType (left);
-
+ bool indexUnsigned;
+
if (IS_PTR (ltype))
{
if (IS_PTR (ltype->next) && left->isaddr)
{
left = geniCodeRValue (left, FALSE);
}
-
+
return geniCodeDerefPtr (geniCodeAdd (left, right, lvl), lvl);
}
-
+ indexUnsigned = IS_UNSIGNED (getSpec (operandType (right)));
right = geniCodeMultiply (right,
operandFromLit (getSize (ltype->next)), (getArraySizePtr(left) >= INTSIZE));
-
+ /* Even if right is a 'unsigned char', the result will be a 'signed int' due to the promotion rules.
+ It doesn't make sense when accessing arrays, so let's fix it here: */
+ if (indexUnsigned)
+ SPEC_USIGN (getSpec (operandType (right))) = 1;
/* we can check for limits here */
if (isOperandLiteral (right) &&
IS_ARRAY (ltype) &&
}
/*-----------------------------------------------------------------*/
-/* geniCodeStruct - generates intermediate code for structres */
+/* geniCodeStruct - generates intermediate code for structures */
/*-----------------------------------------------------------------*/
operand *
geniCodeStruct (operand * left, operand * right, bool islval)
}
}
- ctype = usualBinaryConversions (&left, &right);
+ ctype = usualBinaryConversions (&left, &right, FALSE, FALSE);
ic = newiCode (op, left, right);
IC_RESULT (ic) = newiTempOperand (newCharLink (), 1);
if (!IS_FUNC(OP_SYMBOL(left)->type) &&
!IS_CODEPTR(OP_SYMBOL(left)->type)) {
werror (E_FUNCTION_EXPECTED);
- return NULL;
+ return operandFromValue(valueFromLit(0));
}
/* take care of parameters with side-effecting
sym_link *cetype = getSpec (operandType (cond));
/* no need to check the lower bound if
the condition is unsigned & minimum value is zero */
- if (!(min == 0 && SPEC_USIGN (cetype)))
+ if (!(min == 0 && IS_UNSIGNED (cetype)))
{
boundary = geniCodeLogic (cond, operandFromLit (min), '<');
ic = newiCodeCondition (boundary, falseLabel, NULL);
block = tree->block;
if (tree->level)
scopeLevel = tree->level;
+ if (tree->seqPoint)
+ seqPoint = tree->seqPoint;
if (tree->type == EX_VALUE)
return operandFromValue (tree->opval.val);
projects / fw / sdcc / blobdiff