mirror of
https://github.com/cc65/cc65.git
synced 2024-12-24 11:31:31 +00:00
Don't generate short code for the tosxxx functions when X is zero or similar.
Let the optimizer do it. This reduces the number of possible patterns that must be detected by the optimizer. Add tosicmp0 as a shortcut function. git-svn-id: svn://svn.cc65.org/cc65/trunk@4006 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
parent
6a26b6e3b4
commit
0b7b9354dc
@ -6,8 +6,8 @@
|
||||
/* */
|
||||
/* */
|
||||
/* */
|
||||
/* (C) 1998-2004 Ullrich von Bassewitz */
|
||||
/* Römerstraße 52 */
|
||||
/* (C) 1998-2009 Ullrich von Bassewitz */
|
||||
/* Roemerstrasse 52 */
|
||||
/* D-70794 Filderstadt */
|
||||
/* EMail: uz@cc65.org */
|
||||
/* */
|
||||
@ -2267,58 +2267,33 @@ void g_cmp (unsigned flags, unsigned long val)
|
||||
|
||||
|
||||
|
||||
static void oper (unsigned flags, unsigned long val, char** subs)
|
||||
/* Encode a binary operation. subs is a pointer to four groups of three
|
||||
* strings:
|
||||
* 0-2 --> Operate on ints
|
||||
* 3-5 --> Operate on unsigneds
|
||||
* 6-8 --> Operate on longs
|
||||
* 9-11 --> Operate on unsigned longs
|
||||
*
|
||||
* The first subroutine names in each string group is used to encode an
|
||||
* operation with a zero constant, the second to encode an operation with
|
||||
* a 8 bit constant, and the third is used in all other cases.
|
||||
static void oper (unsigned Flags, unsigned long Val, const char** Subs)
|
||||
/* Encode a binary operation. subs is a pointer to four strings:
|
||||
* 0 --> Operate on ints
|
||||
* 1 --> Operate on unsigneds
|
||||
* 2 --> Operate on longs
|
||||
* 3 --> Operate on unsigned longs
|
||||
*/
|
||||
{
|
||||
unsigned offs;
|
||||
|
||||
/* Determine the offset into the array */
|
||||
offs = (flags & CF_UNSIGNED)? 3 : 0;
|
||||
switch (flags & CF_TYPE) {
|
||||
case CF_CHAR:
|
||||
case CF_INT:
|
||||
break;
|
||||
|
||||
case CF_LONG:
|
||||
offs += 6;
|
||||
break;
|
||||
|
||||
default:
|
||||
typeerror (flags);
|
||||
if (Flags & CF_UNSIGNED) {
|
||||
++Subs;
|
||||
}
|
||||
if ((Flags & CF_TYPE) == CF_LONG) {
|
||||
Subs += 2;
|
||||
}
|
||||
|
||||
/* Encode the operation */
|
||||
if (flags & CF_CONST) {
|
||||
/* Constant value given */
|
||||
if (val == 0 && subs [offs+0]) {
|
||||
/* Special case: constant with value zero */
|
||||
AddCodeLine ("jsr %s", subs [offs+0]);
|
||||
} else if (val < 0x100 && subs [offs+1]) {
|
||||
/* Special case: constant with high byte zero */
|
||||
ldaconst (val); /* Load low byte */
|
||||
AddCodeLine ("jsr %s", subs [offs+1]);
|
||||
} else {
|
||||
/* Others: arbitrary constant value */
|
||||
g_getimmed (flags, val, 0); /* Load value */
|
||||
AddCodeLine ("jsr %s", subs [offs+2]);
|
||||
}
|
||||
} else {
|
||||
/* Value not constant (is already in (e)ax) */
|
||||
AddCodeLine ("jsr %s", subs [offs+2]);
|
||||
/* Load the value if it is not already in the primary */
|
||||
if (Flags & CF_CONST) {
|
||||
/* Load value */
|
||||
g_getimmed (Flags, Val, 0);
|
||||
}
|
||||
|
||||
/* Output the operation */
|
||||
AddCodeLine ("jsr %s", *Subs);
|
||||
|
||||
/* The operation will pop it's argument */
|
||||
pop (flags);
|
||||
pop (Flags);
|
||||
}
|
||||
|
||||
|
||||
@ -2550,11 +2525,8 @@ void g_stackcheck (void)
|
||||
void g_add (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS + Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosadda0", "tosaddax",
|
||||
0, "tosadda0", "tosaddax",
|
||||
0, 0, "tosaddeax",
|
||||
0, 0, "tosaddeax",
|
||||
static const char* ops[12] = {
|
||||
"tosaddax", "tosaddax", "tosaddeax", "tosaddeax"
|
||||
};
|
||||
|
||||
if (flags & CF_CONST) {
|
||||
@ -2569,11 +2541,8 @@ void g_add (unsigned flags, unsigned long val)
|
||||
void g_sub (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS - Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tossuba0", "tossubax",
|
||||
0, "tossuba0", "tossubax",
|
||||
0, 0, "tossubeax",
|
||||
0, 0, "tossubeax",
|
||||
static const char* ops[12] = {
|
||||
"tossubax", "tossubax", "tossubeax", "tossubeax",
|
||||
};
|
||||
|
||||
if (flags & CF_CONST) {
|
||||
@ -2588,11 +2557,8 @@ void g_sub (unsigned flags, unsigned long val)
|
||||
void g_rsub (unsigned flags, unsigned long val)
|
||||
/* Primary = Primary - TOS */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosrsuba0", "tosrsubax",
|
||||
0, "tosrsuba0", "tosrsubax",
|
||||
0, 0, "tosrsubeax",
|
||||
0, 0, "tosrsubeax",
|
||||
static const char* ops[12] = {
|
||||
"tosrsubax", "tosrsubax", "tosrsubeax", "tosrsubeax",
|
||||
};
|
||||
oper (flags, val, ops);
|
||||
}
|
||||
@ -2602,11 +2568,8 @@ void g_rsub (unsigned flags, unsigned long val)
|
||||
void g_mul (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS * Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosmula0", "tosmulax",
|
||||
0, "tosumula0", "tosumulax",
|
||||
0, 0, "tosmuleax",
|
||||
0, 0, "tosumuleax",
|
||||
static const char* ops[12] = {
|
||||
"tosmulax", "tosumulax", "tosmuleax", "tosumuleax",
|
||||
};
|
||||
|
||||
int p2;
|
||||
@ -2712,11 +2675,8 @@ void g_mul (unsigned flags, unsigned long val)
|
||||
void g_div (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS / Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosdiva0", "tosdivax",
|
||||
0, "tosudiva0", "tosudivax",
|
||||
0, 0, "tosdiveax",
|
||||
0, 0, "tosudiveax",
|
||||
static const char* ops[12] = {
|
||||
"tosdivax", "tosudivax", "tosdiveax", "tosudiveax",
|
||||
};
|
||||
|
||||
/* Do strength reduction if the value is constant and a power of two */
|
||||
@ -2740,11 +2700,8 @@ void g_div (unsigned flags, unsigned long val)
|
||||
void g_mod (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS % Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosmoda0", "tosmodax",
|
||||
0, "tosumoda0", "tosumodax",
|
||||
0, 0, "tosmodeax",
|
||||
0, 0, "tosumodeax",
|
||||
static const char* ops[12] = {
|
||||
"tosmodax", "tosumodax", "tosmodeax", "tosumodeax",
|
||||
};
|
||||
int p2;
|
||||
|
||||
@ -2768,11 +2725,8 @@ void g_mod (unsigned flags, unsigned long val)
|
||||
void g_or (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS | Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosora0", "tosorax",
|
||||
0, "tosora0", "tosorax",
|
||||
0, 0, "tosoreax",
|
||||
0, 0, "tosoreax",
|
||||
static const char* ops[12] = {
|
||||
"tosorax", "tosorax", "tosoreax", "tosoreax",
|
||||
};
|
||||
|
||||
/* If the right hand side is const, the lhs is not on stack but still
|
||||
@ -2841,11 +2795,8 @@ void g_or (unsigned flags, unsigned long val)
|
||||
void g_xor (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS ^ Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosxora0", "tosxorax",
|
||||
0, "tosxora0", "tosxorax",
|
||||
0, 0, "tosxoreax",
|
||||
0, 0, "tosxoreax",
|
||||
static const char* ops[12] = {
|
||||
"tosxorax", "tosxorax", "tosxoreax", "tosxoreax",
|
||||
};
|
||||
|
||||
|
||||
@ -2912,11 +2863,8 @@ void g_xor (unsigned flags, unsigned long val)
|
||||
void g_and (unsigned Flags, unsigned long Val)
|
||||
/* Primary = TOS & Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, "tosanda0", "tosandax",
|
||||
0, "tosanda0", "tosandax",
|
||||
0, 0, "tosandeax",
|
||||
0, 0, "tosandeax",
|
||||
static const char* ops[12] = {
|
||||
"tosandax", "tosandax", "tosandeax", "tosandeax",
|
||||
};
|
||||
|
||||
/* If the right hand side is const, the lhs is not on stack but still
|
||||
@ -3001,11 +2949,8 @@ void g_and (unsigned Flags, unsigned long Val)
|
||||
void g_asr (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS >> Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, 0, "tosasrax",
|
||||
0, 0, "tosshrax",
|
||||
0, 0, "tosasreax",
|
||||
0, 0, "tosshreax",
|
||||
static const char* ops[12] = {
|
||||
"tosasrax", "tosshrax", "tosasreax", "tosshreax",
|
||||
};
|
||||
|
||||
/* If the right hand side is const, the lhs is not on stack but still
|
||||
@ -3091,11 +3036,8 @@ void g_asr (unsigned flags, unsigned long val)
|
||||
void g_asl (unsigned flags, unsigned long val)
|
||||
/* Primary = TOS << Primary */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
0, 0, "tosaslax",
|
||||
0, 0, "tosshlax",
|
||||
0, 0, "tosasleax",
|
||||
0, 0, "tosshleax",
|
||||
static const char* ops[12] = {
|
||||
"tosaslax", "tosshlax", "tosasleax", "tosshleax",
|
||||
};
|
||||
|
||||
|
||||
@ -3450,11 +3392,8 @@ void g_dec (unsigned flags, unsigned long val)
|
||||
void g_eq (unsigned flags, unsigned long val)
|
||||
/* Test for equal */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
"toseq00", "toseqa0", "toseqax",
|
||||
"toseq00", "toseqa0", "toseqax",
|
||||
0, 0, "toseqeax",
|
||||
0, 0, "toseqeax",
|
||||
static const char* ops[12] = {
|
||||
"toseqax", "toseqax", "toseqeax", "toseqeax",
|
||||
};
|
||||
|
||||
unsigned L;
|
||||
@ -3507,11 +3446,8 @@ void g_eq (unsigned flags, unsigned long val)
|
||||
void g_ne (unsigned flags, unsigned long val)
|
||||
/* Test for not equal */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
"tosne00", "tosnea0", "tosneax",
|
||||
"tosne00", "tosnea0", "tosneax",
|
||||
0, 0, "tosneeax",
|
||||
0, 0, "tosneeax",
|
||||
static const char* ops[12] = {
|
||||
"tosneax", "tosneax", "tosneeax", "tosneeax",
|
||||
};
|
||||
|
||||
unsigned L;
|
||||
@ -3564,11 +3500,8 @@ void g_ne (unsigned flags, unsigned long val)
|
||||
void g_lt (unsigned flags, unsigned long val)
|
||||
/* Test for less than */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
"toslt00", "toslta0", "tosltax",
|
||||
"tosult00", "tosulta0", "tosultax",
|
||||
0, 0, "toslteax",
|
||||
0, 0, "tosulteax",
|
||||
static const char* ops[12] = {
|
||||
"tosltax", "tosultax", "toslteax", "tosulteax",
|
||||
};
|
||||
|
||||
/* If the right hand side is const, the lhs is not on stack but still
|
||||
@ -3675,11 +3608,8 @@ void g_lt (unsigned flags, unsigned long val)
|
||||
void g_le (unsigned flags, unsigned long val)
|
||||
/* Test for less than or equal to */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
"tosle00", "toslea0", "tosleax",
|
||||
"tosule00", "tosulea0", "tosuleax",
|
||||
0, 0, "tosleeax",
|
||||
0, 0, "tosuleeax",
|
||||
static const char* ops[12] = {
|
||||
"tosleax", "tosuleax", "tosleeax", "tosuleeax",
|
||||
};
|
||||
|
||||
|
||||
@ -3793,11 +3723,8 @@ void g_le (unsigned flags, unsigned long val)
|
||||
void g_gt (unsigned flags, unsigned long val)
|
||||
/* Test for greater than */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
"tosgt00", "tosgta0", "tosgtax",
|
||||
"tosugt00", "tosugta0", "tosugtax",
|
||||
0, 0, "tosgteax",
|
||||
0, 0, "tosugteax",
|
||||
static const char* ops[12] = {
|
||||
"tosgtax", "tosugtax", "tosgteax", "tosugteax",
|
||||
};
|
||||
|
||||
|
||||
@ -3927,11 +3854,8 @@ void g_gt (unsigned flags, unsigned long val)
|
||||
void g_ge (unsigned flags, unsigned long val)
|
||||
/* Test for greater than or equal to */
|
||||
{
|
||||
static char* ops [12] = {
|
||||
"tosge00", "tosgea0", "tosgeax",
|
||||
"tosuge00", "tosugea0", "tosugeax",
|
||||
0, 0, "tosgeeax",
|
||||
0, 0, "tosugeeax",
|
||||
static const char* ops[12] = {
|
||||
"tosgeax", "tosugeax", "tosgeeax", "tosugeeax",
|
||||
};
|
||||
|
||||
|
||||
|
||||
@ -6,8 +6,8 @@
|
||||
/* */
|
||||
/* */
|
||||
/* */
|
||||
/* (C) 2001-2006, Ullrich von Bassewitz */
|
||||
/* Römerstraße 52 */
|
||||
/* (C) 2001-2009, Ullrich von Bassewitz */
|
||||
/* Roemerstrasse 52 */
|
||||
/* D-70794 Filderstadt */
|
||||
/* EMail: uz@cc65.org */
|
||||
/* */
|
||||
@ -235,6 +235,7 @@ static const FuncInfo FuncInfoTable[] = {
|
||||
{ "tosgtax", REG_AX, REG_AXY | REG_SREG },
|
||||
{ "tosgteax", REG_EAX, REG_AXY | REG_PTR1 },
|
||||
{ "tosicmp", REG_AX, REG_AXY | REG_SREG },
|
||||
{ "tosicmp0", REG_A, REG_AXY | REG_SREG },
|
||||
{ "toslcmp", REG_EAX, REG_A | REG_Y | REG_PTR1 },
|
||||
{ "tosle00", REG_NONE, REG_AXY | REG_SREG },
|
||||
{ "toslea0", REG_A, REG_AXY | REG_SREG },
|
||||
|
||||
@ -6,8 +6,8 @@
|
||||
/* */
|
||||
/* */
|
||||
/* */
|
||||
/* (C) 2002-2005, Ullrich von Bassewitz */
|
||||
/* Römerstraße 52 */
|
||||
/* (C) 2002-2009, Ullrich von Bassewitz */
|
||||
/* Roemerstrasse 52 */
|
||||
/* D-70794 Filderstadt */
|
||||
/* EMail: uz@cc65.org */
|
||||
/* */
|
||||
@ -106,6 +106,7 @@ static const CallDesc CallTable [] = {
|
||||
{ "tosgeax", UNKNOWN_REGVAL, 0, UNKNOWN_REGVAL, F_NONE, "tosgea0" },
|
||||
{ "tosgtax", 0, 0, UNKNOWN_REGVAL, F_NONE, "tosgt00" },
|
||||
{ "tosgtax", UNKNOWN_REGVAL, 0, UNKNOWN_REGVAL, F_NONE, "tosgta0" },
|
||||
{ "tosicmp", UNKNOWN_REGVAL, 0, UNKNOWN_REGVAL, F_NONE, "tosicmp0" },
|
||||
{ "tosleax", 0, 0, UNKNOWN_REGVAL, F_NONE, "tosle00" },
|
||||
{ "tosleax", UNKNOWN_REGVAL, 0, UNKNOWN_REGVAL, F_NONE, "toslea0" },
|
||||
{ "tosltax", 0, 0, UNKNOWN_REGVAL, F_NONE, "toslt00" },
|
||||
|
||||
Loading…
Reference in New Issue
Block a user