return buffer;
}
+
+#if 0
+static char *decodeRegType(short type)
+{
+ switch(type) {
+ case REG_GPR: return "REG_GPR";
+ case REG_PTR: return "REG_PTR";
+ case REG_CND: return "REG_CNT";
+
+ default:
+ return "<unknown>";
+ }
+}
+#endif
+
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static char *
if(name)
dReg->name = Safe_strdup(name);
else {
- sprintf(buffer,"r0x%02X", dReg->rIdx);
+ if(xinst && pc_type == PO_GPR_TEMP) {
+ sprintf(buffer,"0x%02x", dReg->rIdx);
+ } else {
+ sprintf(buffer,"r0x%02x", dReg->rIdx);
+ }
+
if(type == REG_STK) {
*buffer = 's';
}
{
regs *dReg;
+//#define D(text) text
+#define D(text)
+
for (dReg = setFirstItem(dRegs) ; dReg ;
dReg = setNextItem(dRegs)) {
+ D(fprintf(stderr, "%s:%d testing reg w/rIdx = %d (%d f:%d)\t", __FUNCTION__, __LINE__, dReg->rIdx, idx, fixed));
if(idx == dReg->rIdx && (fixed == dReg->isFixed)) {
+ D(fprintf(stderr, "found!\n"));
return dReg;
- }
+ } else
+ D(fprintf(stderr, "not found!\n"));
}
return NULL;
// __FILE__, __LINE__, dReg->name, dReg, dReg->rIdx, dReg->isFree);
if(dReg->isFree) {
+// fprintf(stderr, "%s:%d free register found, rIdx = %d\n", __FILE__, __LINE__, dReg->rIdx);
+
return dReg;
}
}
{
regs * reg=NULL;
-#define MAX_P16_NREGS 6
+#define MAX_P16_NREGS 16
#if 0
if(dynrIdx > pic16_nRegs)
+ werror(W_POSSBUG2, __FILE__, __LINE__);
return NULL;
#endif
reg = regFindFree( pic16_dynAllocRegs );
if(reg) {
-// fprintf(stderr, "%s: [%s] found FREE register %s, rIdx: %d\n", __FILE__, (_inRegAllocator)?"ralloc":"", reg->name, reg->rIdx);
+// fprintf(stderr, "%s: [%s][cf:%p] found FREE register %s, rIdx: %d\n", __FILE__, (_inRegAllocator)?"ralloc":"", currFunc, reg->name, reg->rIdx);
}
if(!reg) {
reg = newReg(REG_GPR, PO_GPR_TEMP, dynrIdx++, NULL, 1, 0, NULL);
-// fprintf(stderr, "%s: [%s] allocating NEW register %s, rIdx: %d\n", __FILE__, (_inRegAllocator)?"ralloc":"", reg->name, reg->rIdx);
+// fprintf(stderr, "%s [%s][cf:%p] allocating NEW register %s, rIdx: %d\n", __FILE__,
+// (_inRegAllocator)?"ralloc":"", currFunc, reg->name, reg->rIdx);
#if 1
if(_inRegAllocator && (dynrIdx > MAX_P16_NREGS)) {
// return (NULL);
}
#endif
-
-// addSet(&pic16_dynAllocRegs, reg);
}
addSet(&pic16_dynAllocRegs, reg);
hTabAddItem(&dynAllocRegNames, regname2key(reg->name), reg);
- reg->isFree=0;
-
+// fprintf(stderr, "%s:%d added reg to pic16_dynAllocRegs = %p\n", __FUNCTION__, __LINE__, pic16_dynAllocRegs);
+
debugLog ("%s of type %s for register rIdx: %d (0x%x)\n", __FUNCTION__, debugLogRegType (type), dynrIdx-1, dynrIdx-1);
#if 0
__FILE__, __LINE__, __FUNCTION__, reg->name, reg->address, reg->rIdx, reg->isFree);
#endif
if(reg) {
+ reg->isFree=0;
reg->accessBank = 1; /* this is a temporary register alloc in accessBank */
reg->isLocal = 1; /* this is a local frame register */
// reg->wasUsed = 1;
while(reg) {
if(STRCASECMP(reg->name, name) == 0) {
-// fprintf(stderr, "%s:%d: FOUND name = %s\thash = %d\n", __FUNCTION__, __LINE__, reg->name, hkey);
+// fprintf(stderr, "%s:%d: FOUND name = %s\thash = %d\n", __FUNCTION__, __LINE__, reg->name, hkey);
return(reg);
}
hkey = regname2key(name);
-// fprintf(stderr, "%s:%d: name = %s\thash = %d\n", __FUNCTION__, __LINE__, name, hkey);
+ fprintf(stderr, "%s:%d: name = %s\thash = %d\n", __FUNCTION__, __LINE__, name, hkey);
reg = hTabFirstItemWK(dynAllocRegNames, hkey);
regs *dReg;
debugLog ("%s - requesting index = 0x%x\n", __FUNCTION__,idx);
-// fprintf(stderr, "%s - requesting index = 0x%x\n", __FUNCTION__, idx);
+// fprintf(stderr, "%s - requesting index = 0x%x (type = %d [%s])\n", __FUNCTION__, idx, type, decodeRegType(type));
switch (type) {
return dReg;
}
+ if( (dReg = regWithIdx ( pic16_dynInternalRegs, idx, fixed)) != NULL ) {
+ debugLog ("Found an Internal Register!\n");
+ return dReg;
+ }
+
break;
case REG_STK:
if( (dReg = regWithIdx ( pic16_dynStackRegs, idx, fixed)) != NULL ) {
debugLog ("Dynamic Register not found\n");
-
+// return (NULL);
//fprintf(stderr,"%s %d - requested register: 0x%x\n",__FUNCTION__,__LINE__,idx);
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "regWithIdx not found");
+ "allocWithIdx not found");
exit (1);
}
case REG_GPR:
if((dReg = regFindFree(pic16_dynAllocRegs)) != NULL)
return dReg;
- return allocReg( REG_GPR ); //addSet(&pic16_dynAllocRegs,newReg(REG_GPR, PO_GPR_TEMP,dynrIdx++,NULL,1,0, NULL));
+// return (addSet(&pic16_dynAllocRegs,newReg(REG_GPR, PO_GPR_TEMP,dynrIdx++,NULL,1,0, NULL)));
+ return allocReg( REG_GPR );
case REG_STK:
case REG_GPR:
if((dReg = regFindFreeNext(pic16_dynAllocRegs, creg)) != NULL)
return dReg;
- return (addSet(&pic16_dynAllocRegs,newReg(REG_GPR, PO_GPR_TEMP,dynrIdx++,NULL,1,0, NULL)));
+// return (addSet(&pic16_dynAllocRegs,newReg(REG_GPR, PO_GPR_TEMP,dynrIdx++,NULL,1,0, NULL)));
+ return (allocReg( REG_GPR ) );
case REG_STK:
static DEFSETFUNC (markRegFree)
{
((regs *)item)->isFree = 1;
+// ((regs *)item)->wasUsed = 0;
return 0;
}
bitVect *uses;
iCode *dic, *sic;
+ return NULL;
+
debugLog ("%s\n", __FUNCTION__);
/* if returning a literal then do nothing */
if (!IS_SYMOP (op))
#if 0
- /* if this is an arithmetic operation
- * && result or left is not rematerializable (so it is a plain arithmetic op)
- * && and left is not used after this iCode */
+ /* try to optimize FSR0 usage when reading data memory pointers */
- if(getenv("OPTIMIZE_NEAR_POINTER_GET"))
-
- if (IS_ARITHMETIC_OP(ic)
- && !IS_OP_LITERAL (IC_LEFT (ic))
- && !OP_SYMBOL (IC_RESULT(ic))->rematiCode
- && !OP_SYMBOL (IC_LEFT(ic))->rematiCode
- && (OP_LIVETO (IC_LEFT(ic) ) <= ic->seq)
- ) {
- iCode *dic = ic->prev;
-
- /* search backwards to find assignment from a remat pointer */
- while(dic && dic->seq >= OP_LIVEFROM( IC_LEFT(ic) )) {
-
- /* is it a pointer_get? */
- if(POINTER_GET(dic)
- && IS_DATA_PTR(OP_SYM_TYPE (IC_LEFT (dic)))) {
- fprintf(stderr, "%s:%d `%s' is a data pointer (ic seq: %d)\n", __FILE__, __LINE__,
- OP_SYMBOL(IC_LEFT(dic))->rname, dic->seq);
-
- /* so we can replace ic->left with dic->left, & remove assignment */
- ReplaceOpWithCheaperOp( &IC_LEFT(ic), IC_LEFT(dic) );
-
- bitVectUnSetBit(OP_USES( IC_LEFT(ic) ), ic->key);
- bitVectUnSetBit(OP_DEFS( IC_RESULT(dic) ), dic->key );
-
-// dic->op = DUMMY_READ_VOLATILE;
-#if 1
- remiCodeFromeBBlock(ebp, dic);
- hTabDeleteItem(&iCodehTab, dic->key, dic, DELETE_ITEM, NULL);
-#endif
- break;
- }
- dic = dic->prev;
- }
+ if(getenv("OPTIMIZE_NEAR_POINTER_GET")) {
+ static int fsr0usage=0;
+ static iCode *usic;
+
+ if(POINTER_GET(ic) /* this is a memory read */
+ && ic->loop /* this is in a loop */
+ ) {
+ fprintf(stderr, "might optimize FSR0 usage\n");
+ }
}
#endif
printiCChain (ebbs[i]->sch, debugF);
}
}
+
+void dbg_dumpregusage(void);
+
/*-----------------------------------------------------------------*/
/* pic16_assignRegisters - assigns registers to each live range as need */
/*-----------------------------------------------------------------*/
_inRegAllocator = 1;
+ pic16_freeAllRegs();
+#if 0
+ dbg_dumpregusage();
+ /* clear whats left over from peephole parser */
+ pic16_dynAllocRegs= newSet(); //NULL;
+// pic16_dynStackRegs= newSet(); //NULL;
+// pic16_dynProcessorRegs=newSet(); //NULL;
+// pic16_dynDirectRegs=newSet(); //NULL;
+// pic16_dynDirectBitRegs=newSet(); //NULL;
+// pic16_dynInternalRegs=newSet(); //NULL;
+// pic16_dynAccessRegs=newSet(); //NULL;
+
+// dynDirectRegNames=NULL;
+ dynAllocRegNames=NULL;
+// dynProcRegNames=NULL;
+// dynAccessRegNames=NULL;
+#endif
+
setToNull ((void *) &_G.funcrUsed);
pic16_ptrRegReq = _G.stackExtend = _G.dataExtend = 0;
if (options.dump_rassgn)
dumpEbbsToFileExt (DUMP_RASSGN, ebbi);
+// dumpLR(ebbs, count);
+
/* now get back the chain */
ic = iCodeLabelOptimize (iCodeFromeBBlock (ebbs, count));
projects / fw / sdcc / blobdiff