-------------------------------------------------------------------------*/
/*
- pcoderegs.c
+pcoderegs.c
The purpose of the code in this file is to optimize the register usage.
int register_optimization=1;
/*-----------------------------------------------------------------*
- * void AddRegToFlow(regs *reg, pCodeFlow *pcfl)
- *-----------------------------------------------------------------*/
+* void AddRegToFlow(regs *reg, pCodeFlow *pcfl)
+*-----------------------------------------------------------------*/
/*
void AddRegToFlow(regs *reg, pCodeFlow *pcfl)
{
- if(!reg || ! pcfl || !isPCFL(pcflow))
- return;
-
- if(!pcfl->registers)
- pcfl->registers = newSet();
+ if(!reg || ! pcfl || !isPCFL(pcflow))
+ return;
+ if(!pcfl->registers)
+ pcfl->registers = newSet();
+
}
*/
/*-----------------------------------------------------------------*
- *
- *-----------------------------------------------------------------*/
+*
+*-----------------------------------------------------------------*/
void dbg_regusage(set *fregs)
{
- regs *reg;
- pCode *pcfl;
- pCode *pc;
-
-
- for (reg = setFirstItem(fregs) ; reg ;
- reg = setNextItem(fregs)) {
-
- if(elementsInSet(reg->reglives.usedpCodes)) {
-
- fprintf (stderr, "%s addr=0x%03x rIdx=0x%03x",
- reg->name,
- reg->address,
- reg->rIdx);
-
- pcfl = setFirstItem(reg->reglives.usedpFlows);
- if(pcfl)
- fprintf(stderr, "\n used in seq");
-
- while(pcfl) {
- fprintf(stderr," 0x%03x",pcfl->seq);
- pcfl = setNextItem(reg->reglives.usedpFlows);
- }
-
- pcfl = setFirstItem(reg->reglives.assignedpFlows);
- if(pcfl)
- fprintf(stderr, "\n assigned in seq");
-
- while(pcfl) {
- fprintf(stderr," 0x%03x",pcfl->seq);
- pcfl = setNextItem(reg->reglives.assignedpFlows);
- }
-
- pc = setFirstItem(reg->reglives.usedpCodes);
- if(pc)
- fprintf(stderr, "\n used in instructions ");
-
- while(pc) {
- pcfl = PCODE(PCI(pc)->pcflow);
- if(pcfl)
- fprintf(stderr," 0x%03x:",pcfl->seq);
- fprintf(stderr,"0x%03x",pc->seq);
-
- pc = setNextItem(reg->reglives.usedpCodes);
- }
-
- fprintf(stderr, "\n");
- }
- }
+ regs *reg;
+ pCode *pcfl;
+ pCode *pc;
+
+
+ for (reg = setFirstItem(fregs) ; reg ;
+ reg = setNextItem(fregs)) {
+
+ if(elementsInSet(reg->reglives.usedpCodes)) {
+
+ fprintf (stderr, "%s addr=0x%03x rIdx=0x%03x",
+ reg->name,
+ reg->address,
+ reg->rIdx);
+
+ pcfl = setFirstItem(reg->reglives.usedpFlows);
+ if(pcfl)
+ fprintf(stderr, "\n used in seq");
+
+ while(pcfl) {
+ fprintf(stderr," 0x%03x",pcfl->seq);
+ pcfl = setNextItem(reg->reglives.usedpFlows);
+ }
+
+ pcfl = setFirstItem(reg->reglives.assignedpFlows);
+ if(pcfl)
+ fprintf(stderr, "\n assigned in seq");
+
+ while(pcfl) {
+ fprintf(stderr," 0x%03x",pcfl->seq);
+ pcfl = setNextItem(reg->reglives.assignedpFlows);
+ }
+
+ pc = setFirstItem(reg->reglives.usedpCodes);
+ if(pc)
+ fprintf(stderr, "\n used in instructions ");
+
+ while(pc) {
+ pcfl = PCODE(PCI(pc)->pcflow);
+ if(pcfl)
+ fprintf(stderr," 0x%03x:",pcfl->seq);
+ fprintf(stderr,"0x%03x",pc->seq);
+
+ pc = setNextItem(reg->reglives.usedpCodes);
+ }
+
+ fprintf(stderr, "\n");
+ }
+ }
}
/*-----------------------------------------------------------------*
- *
- *-----------------------------------------------------------------*/
+*
+*-----------------------------------------------------------------*/
void dbg_dumpregusage(void)
{
-
- fprintf(stderr,"*** Register Usage ***\n");
- fprintf(stderr,"InternalRegs:\n");
- dbg_regusage(dynInternalRegs);
- fprintf(stderr,"AllocRegs:\n");
- dbg_regusage(dynAllocRegs);
- fprintf(stderr,"StackRegs:\n");
- dbg_regusage(dynStackRegs);
- fprintf(stderr,"DirectRegs:\n");
- dbg_regusage(dynDirectRegs);
- fprintf(stderr,"DirectBitRegs:\n");
- dbg_regusage(dynDirectBitRegs);
- fprintf(stderr,"ProcessorRegs:\n");
- dbg_regusage(dynProcessorRegs);
-
+
+ fprintf(stderr,"*** Register Usage ***\n");
+ fprintf(stderr,"InternalRegs:\n");
+ dbg_regusage(dynInternalRegs);
+ fprintf(stderr,"AllocRegs:\n");
+ dbg_regusage(dynAllocRegs);
+ fprintf(stderr,"StackRegs:\n");
+ dbg_regusage(dynStackRegs);
+ fprintf(stderr,"DirectRegs:\n");
+ dbg_regusage(dynDirectRegs);
+ fprintf(stderr,"DirectBitRegs:\n");
+ dbg_regusage(dynDirectBitRegs);
+ fprintf(stderr,"ProcessorRegs:\n");
+ dbg_regusage(dynProcessorRegs);
+
}
/*-----------------------------------------------------------------*
- * void pCodeRegMapLiveRangesInFlow(pCodeFlow *pcfl)
- *-----------------------------------------------------------------*/
+* void pCodeRegMapLiveRangesInFlow(pCodeFlow *pcfl)
+*-----------------------------------------------------------------*/
void pCodeRegMapLiveRangesInFlow(pCodeFlow *pcfl)
{
-
- pCode *pc=NULL;
- pCode *pcprev=NULL;
-
- regs *reg;
-
- if(!pcfl)
- return;
-
-
- pc = findNextInstruction(pcfl->pc.next);
-
- while(isPCinFlow(pc,PCODE(pcfl))) {
-
-
- reg = getRegFromInstruction(pc);
-
- if(reg) {
-/*
- fprintf(stderr, "flow seq %d, inst seq %d %s ",PCODE(pcfl)->seq,pc->seq,reg->name);
- fprintf(stderr, "addr = 0x%03x, type = %d rIdx=0x%03x\n",
- reg->address,reg->type,reg->rIdx);
-*/
-
- addSetIfnotP(& (PCFL(pcfl)->registers), reg);
-
- if((PCC_REGISTER | PCC_LITERAL) & PCI(pc)->inCond)
- addSetIfnotP(& (reg->reglives.usedpFlows), pcfl);
-
- if(PCC_REGISTER & PCI(pc)->outCond)
- addSetIfnotP(& (reg->reglives.assignedpFlows), pcfl);
-
- addSetIfnotP(& (reg->reglives.usedpCodes), pc);
- }
-
-
- pcprev = pc;
- pc = findNextInstruction(pc->next);
-
- }
-
+
+ pCode *pc=NULL;
+ pCode *pcprev=NULL;
+
+ regs *reg;
+
+ if(!pcfl)
+ return;
+
+
+ pc = findNextInstruction(pcfl->pc.next);
+
+ while(isPCinFlow(pc,PCODE(pcfl))) {
+
+
+ reg = getRegFromInstruction(pc);
+
+ if(reg) {
+ /*
+ fprintf(stderr, "flow seq %d, inst seq %d %s ",PCODE(pcfl)->seq,pc->seq,reg->name);
+ fprintf(stderr, "addr = 0x%03x, type = %d rIdx=0x%03x\n",
+ reg->address,reg->type,reg->rIdx);
+ */
+
+ addSetIfnotP(& (PCFL(pcfl)->registers), reg);
+
+ if((PCC_REGISTER | PCC_LITERAL) & PCI(pc)->inCond)
+ addSetIfnotP(& (reg->reglives.usedpFlows), pcfl);
+
+ if(PCC_REGISTER & PCI(pc)->outCond)
+ addSetIfnotP(& (reg->reglives.assignedpFlows), pcfl);
+
+ addSetIfnotP(& (reg->reglives.usedpCodes), pc);
+ }
+
+
+ pcprev = pc;
+ pc = findNextInstruction(pc->next);
+
+ }
+
}
/*-----------------------------------------------------------------*
- * void pCodeRegMapLiveRanges(pBlock *pb)
- *-----------------------------------------------------------------*/
+* void pCodeRegMapLiveRanges(pBlock *pb)
+*-----------------------------------------------------------------*/
void pCodeRegMapLiveRanges(pBlock *pb)
{
- pCode *pcflow;
-
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
-
- if(!isPCFL(pcflow)) {
- fprintf(stderr, "pCodeRegMapLiveRanges - pcflow is not a flow object ");
- continue;
- }
- pCodeRegMapLiveRangesInFlow(PCFL(pcflow));
- }
-
+ pCode *pcflow;
+
+ for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
+ pcflow != NULL;
+ pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
+
+ if(!isPCFL(pcflow)) {
+ fprintf(stderr, "pCodeRegMapLiveRanges - pcflow is not a flow object ");
+ continue;
+ }
+ pCodeRegMapLiveRangesInFlow(PCFL(pcflow));
+ }
+
#if 0
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
-
- regs *r = setFirstItem(PCFL(pcflow)->registers);
- fprintf(stderr,"flow seq %d\n", pcflow->seq);
-
- while (r) {
- fprintf(stderr, " %s\n",r->name);
- r = setNextItem(PCFL(pcflow)->registers);
-
- }
-
- }
+ for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
+ pcflow != NULL;
+ pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
+
+ regs *r = setFirstItem(PCFL(pcflow)->registers);
+ fprintf(stderr,"flow seq %d\n", pcflow->seq);
+
+ while (r) {
+ fprintf(stderr, " %s\n",r->name);
+ r = setNextItem(PCFL(pcflow)->registers);
+
+ }
+
+ }
#endif
-
-// dbg_dumpregusage();
-
+
+ // dbg_dumpregusage();
+
}
/*-----------------------------------------------------------------*
- *
- *-----------------------------------------------------------------*/
+*
+*-----------------------------------------------------------------*/
static void Remove1pcode(pCode *pc, regs *reg, int debug_code)
{
-
- pCode *pcn=NULL;
-
- if(!reg || !pc)
- return;
-
- deleteSetItem (&(reg->reglives.usedpCodes),pc);
-
- if(PCI(pc)->label) {
- pcn = findNextInstruction(pc->next);
-
- if(pcn)
- PCI(pcn)->label = pBranchAppend(PCI(pcn)->label,PCI(pc)->label);
- }
-
- if(PCI(pc)->cline) {
- if(!pcn)
- pcn = findNextInstruction(pc->next);
-
- if(pcn) {
- if(PCI(pcn)->cline) {
- //fprintf(stderr, "source line has been optimized completely out\n");
- //pc->print(stderr,pc);
- } else {
- PCI(pcn)->cline = PCI(pc)->cline;
- }
- }
- }
-
-
- if(1){
- /*
- Debug stuff. Comment out the instruction we're about to delete.
- */
-
- char buff1[256];
- size_t size = 256;
-
- char *pbuff,**ppbuff;
- pbuff = buff1;
- ppbuff = &pbuff;
-
- SAFE_snprintf(ppbuff,&size, ";%d", debug_code);
- pCode2str(*ppbuff, size, pc);
- pCodeInsertBefore(pc, newpCodeCharP(buff1));
- //fprintf(stderr,"removing instruction:\n%s\n",buff1);
- }
-
- pc->destruct(pc);
-
+
+ pCode *pcn=NULL;
+
+ if(!reg || !pc)
+ return;
+
+ deleteSetItem (&(reg->reglives.usedpCodes),pc);
+
+ if(PCI(pc)->label) {
+ pcn = findNextInstruction(pc->next);
+
+ if(pcn)
+ PCI(pcn)->label = pBranchAppend(PCI(pcn)->label,PCI(pc)->label);
+ }
+
+ if(PCI(pc)->cline) {
+ if(!pcn)
+ pcn = findNextInstruction(pc->next);
+
+ if(pcn) {
+ if(PCI(pcn)->cline) {
+ //fprintf(stderr, "source line has been optimized completely out\n");
+ //pc->print(stderr,pc);
+ } else {
+ PCI(pcn)->cline = PCI(pc)->cline;
+ }
+ }
+ }
+
+
+ if(1){
+ /*
+ Debug stuff. Comment out the instruction we're about to delete.
+ */
+
+ char buff1[256];
+ size_t size = 256;
+
+ char *pbuff,**ppbuff;
+ pbuff = buff1;
+ ppbuff = &pbuff;
+
+ SAFE_snprintf(ppbuff,&size, ";%d", debug_code);
+ pCode2str(*ppbuff, size, pc);
+ pCodeInsertBefore(pc, newpCodeCharP(buff1));
+ //fprintf(stderr,"removing instruction:\n%s\n",buff1);
+ }
+
+ pc->destruct(pc);
+
}
/*-----------------------------------------------------------------*
- * void RemoveRegsFromSet(set *regset)
- *
- *-----------------------------------------------------------------*/
+* void RemoveRegsFromSet(set *regset)
+*
+*-----------------------------------------------------------------*/
void RemoveRegsFromSet(set *regset)
{
- regs *reg;
- int used;
-
- while(regset) {
- reg = regset->item;
- regset = regset->next;
-
- used = elementsInSet(reg->reglives.usedpCodes);
-
- if(used <= 1) {
-
- //fprintf(stderr," reg %s isfree=%d, wasused=%d\n",reg->name,reg->isFree,reg->wasUsed);
- if(used == 0) {
- //fprintf(stderr," getting rid of reg %s\n",reg->name);
- reg->isFree = 1;
- reg->wasUsed = 0;
- } else {
- pCode *pc;
-
-
- pc = setFirstItem(reg->reglives.usedpCodes);
-
- if(reg->type == REG_SFR || reg->type == REG_STK || reg->isPublic || reg->isExtern) {
- //fprintf(stderr, "not removing SFR reg %s even though used only once\n",reg->name);
- continue;
- }
-
-
- if(isPCI(pc)) {
- if(PCI(pc)->label) {
- pCode *pcn = findNextInstruction(pc->next);
-
- if(pcn && PCI(pcn)->label) {
- //fprintf(stderr,"can't delete instruction with label...\n");
- //pc->print(stderr,pc);
- continue;
- }
- /* Move the label to the next instruction */
-
- PCI(pcn)->label = PCI(pc)->label;
-
- }
-
- if(isPCI_SKIP(pc)) {
- regs *r = getRegFromInstruction(pc);
- fprintf(stderr, "WARNING, a skip instruction is being optimized out\n");
- pc->print(stderr,pc);
- fprintf(stderr,"reg %s, type =%d\n",r->name, r->type);
- }
- //fprintf(stderr," removing reg %s because it is used only once\n",reg->name);
- Remove1pcode(pc, reg, 1);
- /*
- unlinkpCode(pc);
- deleteSetItem (&(reg->reglives.usedpCodes),pc);
- */
- reg->isFree = 1;
- reg->wasUsed = 0;
- total_registers_saved++; // debugging stats.
+ regs *reg;
+ int used;
+
+ while(regset) {
+ reg = regset->item;
+ regset = regset->next;
+
+ used = elementsInSet(reg->reglives.usedpCodes);
+
+ if(used <= 1) {
+
+ //fprintf(stderr," reg %s isfree=%d, wasused=%d\n",reg->name,reg->isFree,reg->wasUsed);
+ if(used == 0) {
+ //fprintf(stderr," getting rid of reg %s\n",reg->name);
+ reg->isFree = 1;
+ reg->wasUsed = 0;
+ } else {
+ pCode *pc;
+
+
+ pc = setFirstItem(reg->reglives.usedpCodes);
+
+ if(reg->type == REG_SFR || reg->type == REG_STK || reg->isPublic || reg->isExtern) {
+ //fprintf(stderr, "not removing SFR reg %s even though used only once\n",reg->name);
+ continue;
+ }
+
+
+ if(isPCI(pc)) {
+ if(PCI(pc)->label) {
+ pCode *pcn = findNextInstruction(pc->next);
+
+ if(pcn && PCI(pcn)->label) {
+ //fprintf(stderr,"can't delete instruction with label...\n");
+ //pc->print(stderr,pc);
+ continue;
+ }
+ /* Move the label to the next instruction */
+
+ PCI(pcn)->label = PCI(pc)->label;
+
+ }
+
+ if(isPCI_SKIP(pc)) {
+ regs *r = getRegFromInstruction(pc);
+ fprintf(stderr, "WARNING, a skip instruction is being optimized out\n");
+ pc->print(stderr,pc);
+ fprintf(stderr,"reg %s, type =%d\n",r->name, r->type);
+ }
+ //fprintf(stderr," removing reg %s because it is used only once\n",reg->name);
+ Remove1pcode(pc, reg, 1);
+ /*
+ unlinkpCode(pc);
+ deleteSetItem (&(reg->reglives.usedpCodes),pc);
+ */
+ reg->isFree = 1;
+ reg->wasUsed = 0;
+ total_registers_saved++; // debugging stats.
+ }
+ }
+ }
+
}
- }
- }
-
- }
}
/*-----------------------------------------------------------------*
- * void RemoveUnusedRegisters(void)
- *
- *-----------------------------------------------------------------*/
+* void RemoveUnusedRegisters(void)
+*
+*-----------------------------------------------------------------*/
void RemoveUnusedRegisters(void)
{
- /* First, get rid of registers that are used only one time */
-
- //RemoveRegsFromSet(dynInternalRegs);
- RemoveRegsFromSet(dynAllocRegs);
- RemoveRegsFromSet(dynStackRegs);
- /*
- don't do DirectRegs yet - there's a problem with arrays
- RemoveRegsFromSet(dynDirectRegs);
- */
- RemoveRegsFromSet(dynDirectBitRegs);
-
- if(total_registers_saved) DFPRINTF((stderr, " *** Saved %d registers ***\n", total_registers_saved));
+ /* First, get rid of registers that are used only one time */
+
+ //RemoveRegsFromSet(dynInternalRegs);
+ RemoveRegsFromSet(dynAllocRegs);
+ RemoveRegsFromSet(dynStackRegs);
+ /*
+ don't do DirectRegs yet - there's a problem with arrays
+ RemoveRegsFromSet(dynDirectRegs);
+ */
+ RemoveRegsFromSet(dynDirectBitRegs);
+
+ if(total_registers_saved) DFPRINTF((stderr, " *** Saved %d registers ***\n", total_registers_saved));
}
/*-----------------------------------------------------------------*
- *
- *-----------------------------------------------------------------*/
+*
+*-----------------------------------------------------------------*/
static void Remove2pcodes(pCode *pcflow, pCode *pc1, pCode *pc2, regs *reg, int can_free)
{
- static int debug_code=99;
- if(!reg)
- return;
-
- //fprintf(stderr,"%s\n",__FUNCTION__);
- if(pc1)
- Remove1pcode(pc1, reg, debug_code++);
-
- if(pc2) {
- Remove1pcode(pc2, reg, debug_code++);
- deleteSetItem (&(PCFL(pcflow)->registers), reg);
-
- if(can_free) {
- reg->isFree = 1;
- reg->wasUsed = 0;
- }
-
- }
-
- pCodeRegMapLiveRangesInFlow(PCFL(pcflow));
+ static int debug_code=99;
+ if(!reg)
+ return;
+
+ //fprintf(stderr,"%s\n",__FUNCTION__);
+ if(pc1)
+ Remove1pcode(pc1, reg, debug_code++);
+
+ if(pc2) {
+ Remove1pcode(pc2, reg, debug_code++);
+ deleteSetItem (&(PCFL(pcflow)->registers), reg);
+
+ if(can_free) {
+ reg->isFree = 1;
+ reg->wasUsed = 0;
+ }
+
+ }
+
+ pCodeRegMapLiveRangesInFlow(PCFL(pcflow));
}
/*-----------------------------------------------------------------*
- *
- *-----------------------------------------------------------------*/
+*
+*-----------------------------------------------------------------*/
int regUsedinRange(pCode *pc1, pCode *pc2, regs *reg)
{
- int i=0;
- regs *testreg;
-
- do {
- testreg = getRegFromInstruction(pc1);
- if(testreg && (testreg->rIdx == reg->rIdx)) {
- return 1;
- }
-
- pc1 = findNextInstruction(pc1->next);
-
- } while (pc1 && (pc1 != pc2) && (i++ < 100)) ;
-
- if(i >= 100)
- fprintf(stderr, "warning, regUsedinRange searched through too many pcodes\n");
-
- return 0;
+ int i=0;
+ regs *testreg;
+
+ do {
+ testreg = getRegFromInstruction(pc1);
+ if(testreg && (testreg->rIdx == reg->rIdx)) {
+ return 1;
+ }
+
+ pc1 = findNextInstruction(pc1->next);
+
+ } while (pc1 && (pc1 != pc2) && (i++ < 100)) ;
+
+ if(i >= 100)
+ fprintf(stderr, "warning, regUsedinRange searched through too many pcodes\n");
+
+ return 0;
}
/*-----------------------------------------------------------------*
- * void pCodeOptime2pCodes(pCode *pc1, pCode *pc2)
- *
- * ADHOC pattern checking
- * Now look for specific sequences that are easy to optimize.
- * Many of these sequences are characteristic of the compiler
- * (i.e. it'd probably be a waste of time to apply these adhoc
- * checks to hand written assembly.)
- *
- *
- *-----------------------------------------------------------------*/
+* void pCodeOptime2pCodes(pCode *pc1, pCode *pc2)
+*
+* ADHOC pattern checking
+* Now look for specific sequences that are easy to optimize.
+* Many of these sequences are characteristic of the compiler
+* (i.e. it'd probably be a waste of time to apply these adhoc
+* checks to hand written assembly.)
+*
+*
+*-----------------------------------------------------------------*/
int pCodeOptime2pCodes(pCode *pc1, pCode *pc2, pCode *pcfl_used, regs *reg, int can_free, int optimize_level)
{
- pCode *pct1, *pct2;
- regs *reg1, *reg2;
-
- int t = total_registers_saved;
-
- if(pc2->seq < pc1->seq) {
- pct1 = pc2;
- pc2 = pc1;
- pc1 = pct1;
- }
-
- //fprintf(stderr,"pCodeOptime2pCodes\n");
- //pc1->print(stderr,pc1);
- //pc2->print(stderr,pc2);
-
- if((PCI(pc1)->op == POC_CLRF) && (PCI(pc2)->op == POC_MOVFW) ){
- pCode *newpc;
- int regUsed = 0;
- int wUsed = 0;
- int wSaved = 0;
- /*
- clrf reg ; pc1
- stuff...
- movf reg,w ; pc2
-
- can be replaced with (only if following instructions are not going to use W and reg is not used again later)
-
- stuff...
- movlw 0 or clrf reg
- */
- DFPRINTF((stderr, " optimising CLRF reg ... MOVF reg,W to ... MOVLW 0\n"));
- pct2 = findNextInstruction(pc2->next);
-
- if(pct2 && PCI(pct2)->op == POC_MOVWF) {
- wSaved = wUsed = 1; /* Maybe able to replace with clrf pc2->next->reg. */
- } else {
- wUsed = pCodeSearchCondition(pct2,PCC_W,1) > 0;
- }
- regUsed = regUsedinRange(pct2,0,reg);
- if ((regUsed&&wUsed) || (pCodeSearchCondition(pct2,PCC_Z,0) > 1)) {
- /* Do not optimise as exisiting code is required. */
- } else {
- /* Can optimise. */
- if(regUsed) {
- newpc = newpCode(POC_CLRF, PCI(pc1)->pcop);
- } else if(wSaved && !wUsed) {
- newpc = newpCode(POC_CLRF, PCI(pct2)->pcop);
- pct2->destruct(pct2);
- } else {
- newpc = newpCode(POC_MOVLW, newpCodeOpLit(0));
- }
-
- pCodeInsertAfter(pc2, newpc);
- PCI(newpc)->pcflow = PCFL(pcfl_used);
- newpc->seq = pc2->seq;
-
- Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
- total_registers_saved++; // debugging stats.
- }
- } else if((PCI(pc1)->op == POC_CLRF) && (PCI(pc2)->op == POC_IORFW) ){
- DFPRINTF((stderr, " optimising CLRF/IORFW\n"));
-
- pct2 = findNextInstruction(pc2->next);
-
- if(pCodeSearchCondition(pct2, PCC_Z,0) > 0) {
- pct2 = newpCode(POC_IORLW, newpCodeOpLit(0));
- pct2->seq = pc2->seq;
- PCI(pct2)->pcflow = PCFL(pcfl_used);
- pCodeInsertAfter(pc1,pct2);
- }
- Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
- total_registers_saved++; // debugging stats.
-
- } else if(PCI(pc1)->op == POC_MOVWF) {
- // Optimising MOVWF reg ...
-
- pct2 = findNextInstruction(pc2->next);
-
- if(PCI(pc2)->op == POC_MOVFW) {
- // Optimising MOVWF reg ... MOVF reg,W
-
- if(PCI(pct2)->op == POC_MOVWF) {
- /*
- Change:
-
- movwf reg ; pc1
- stuff...
- movf reg,w ; pc2
- movwf reg2 ; pct2
-
- To: ( as long as 'stuff' does not use reg2 or if following instructions do not use W or reg is not used later)
-
- movwf reg2
- stuff...
-
- */
- reg2 = getRegFromInstruction(pct2);
- /* Check reg2 is not used for something else before it is loaded with reg */
- if (reg2 && !regUsedinRange(pc1,pc2,reg2)) {
- pCode *pct3 = findNextInstruction(pct2->next);
- /* Check following instructions are not relying on the use of W or the Z flag condiction */
- if ((pCodeSearchCondition(pct3,PCC_Z,0) < 1) || (pCodeSearchCondition(pct3,PCC_W,0) < 1)) {
- DFPRINTF((stderr, " optimising MOVF reg ... MOVF reg,W MOVWF reg2 to MOVWF reg2 ...\n"));
- pct2->seq = pc1->seq;
- unlinkpCode(pct2);
- pCodeInsertBefore(pc1,pct2);
- if(regUsedinRange(pct2,0,reg))
- Remove2pcodes(pcfl_used, pc2, NULL, reg, can_free);
- else
- Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
-
- total_registers_saved++; // debugging stats.
- return 1;
- }
- }
- }
- }
-
- pct1 = findPrevInstruction(pc1->prev);
- if(pct1 && (PCI(pct1)->pcflow == PCI(pc1)->pcflow)) {
-
- if ( (PCI(pct1)->op == POC_MOVFW) &&
- (PCI(pc2)->op == POC_MOVFW)) {
-
- reg1 = getRegFromInstruction(pct1);
- if(reg1 && !regUsedinRange(pc1,pc2,reg1)) {
- DFPRINTF((stderr, " optimising MOVF reg1,W MOVWF reg ... MOVF reg,W\n"));
- /*
- Change:
-
- movf reg1,w
- movwf reg
-
- stuff...
- movf reg,w
-
- To:
-
- stuff...
-
- movf reg1,w
-
- Or, if we're not deleting the register then the "To" is:
-
- stuff...
-
- movf reg1,w
- movwf reg
- */
- pct2 = newpCode(PCI(pc2)->op, PCI(pct1)->pcop);
- pCodeInsertAfter(pc2, pct2);
- PCI(pct2)->pcflow = PCFL(pcfl_used);
- pct2->seq = pc2->seq;
-
- if(can_free) {
- Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
- } else {
- /* If we're not freeing the register then that means (probably)
- * the register is needed somewhere else.*/
- unlinkpCode(pc1);
- pCodeInsertAfter(pct2, pc1);
-
- Remove2pcodes(pcfl_used, pc2, NULL, reg, can_free);
- }
-
- Remove2pcodes(pcfl_used, pct1, NULL, reg1, 0);
- total_registers_saved++; // debugging stats.
-
- }
-/* Note this else if is same conditional as the if - DELETE ME
- } else if ( (PCI(pct1)->op == POC_MOVWF) &&
- (PCI(pc2)->op == POC_MOVFW)) {
- DFPRINTF(stderr, " optimising MOVF reg1,W MOVWF reg ... MOVF reg,W\n");
- if(optimize_level > 1 && can_free) {
- pct2 = newpCode(POC_MOVFW, PCI(pc1)->pcop);
- pCodeInsertAfter(pc2, pct2);
- Remove2pcodes(pcfl_used, pc1, pc2, reg, 1);
- total_registers_saved++; // debugging stats.
- }
-*/
- }
- }
+ pCode *pct1, *pct2;
+ regs *reg1, *reg2;
+
+ int t = total_registers_saved;
+
+ if(pc2->seq < pc1->seq) {
+ pct1 = pc2;
+ pc2 = pc1;
+ pc1 = pct1;
+ }
+
+ //fprintf(stderr,"pCodeOptime2pCodes\n");
+ //pc1->print(stderr,pc1);
+ //pc2->print(stderr,pc2);
+
+ if((PCI(pc1)->op == POC_CLRF) && (PCI(pc2)->op == POC_MOVFW) ){
+ pCode *newpc;
+ int regUsed = 0;
+ int wUsed = 0;
+ int wSaved = 0;
+ /*
+ clrf reg ; pc1
+ stuff...
+ movf reg,w ; pc2
+
+ can be replaced with (only if following instructions are not going to use W and reg is not used again later)
+
+ stuff...
+ movlw 0 or clrf reg
+ */
+ DFPRINTF((stderr, " optimising CLRF reg ... MOVF reg,W to ... MOVLW 0\n"));
+ pct2 = findNextInstruction(pc2->next);
+
+ if(pct2 && PCI(pct2)->op == POC_MOVWF) {
+ wSaved = wUsed = 1; /* Maybe able to replace with clrf pc2->next->reg. */
+ } else {
+ wUsed = pCodeSearchCondition(pct2,PCC_W,1) > 0;
+ }
+ regUsed = regUsedinRange(pct2,0,reg);
+ if ((regUsed&&wUsed) || (pCodeSearchCondition(pct2,PCC_Z,0) > 1)) {
+ /* Do not optimise as exisiting code is required. */
+ } else {
+ /* Can optimise. */
+ if(regUsed) {
+ newpc = newpCode(POC_CLRF, PCI(pc1)->pcop);
+ } else if(wSaved && !wUsed) {
+ newpc = newpCode(POC_CLRF, PCI(pct2)->pcop);
+ pct2->destruct(pct2);
+ } else {
+ newpc = newpCode(POC_MOVLW, newpCodeOpLit(0));
+ }
+
+ pCodeInsertAfter(pc2, newpc);
+ PCI(newpc)->pcflow = PCFL(pcfl_used);
+ newpc->seq = pc2->seq;
+
+ Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
+ total_registers_saved++; // debugging stats.
+ }
+ } else if((PCI(pc1)->op == POC_CLRF) && (PCI(pc2)->op == POC_IORFW) ){
+ DFPRINTF((stderr, " optimising CLRF/IORFW\n"));
+
+ pct2 = findNextInstruction(pc2->next);
+
+ if(pCodeSearchCondition(pct2, PCC_Z,0) > 0) {
+ pct2 = newpCode(POC_IORLW, newpCodeOpLit(0));
+ pct2->seq = pc2->seq;
+ PCI(pct2)->pcflow = PCFL(pcfl_used);
+ pCodeInsertAfter(pc1,pct2);
+ }
+ Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
+ total_registers_saved++; // debugging stats.
+
+ } else if(PCI(pc1)->op == POC_MOVWF) {
+ // Optimising MOVWF reg ...
+
+ pct2 = findNextInstruction(pc2->next);
+
+ if(PCI(pc2)->op == POC_MOVFW) {
+ // Optimising MOVWF reg ... MOVF reg,W
+
+ if(PCI(pct2)->op == POC_MOVWF) {
+ /*
+ Change:
+
+ movwf reg ; pc1
+ stuff...
+ movf reg,w ; pc2
+ movwf reg2 ; pct2
+
+ To: ( as long as 'stuff' does not use reg2 or if following instructions do not use W or reg is not used later)
+
+ movwf reg2
+ stuff...
+
+ */
+ reg2 = getRegFromInstruction(pct2);
+ /* Check reg2 is not used for something else before it is loaded with reg */
+ if (reg2 && !regUsedinRange(pc1,pc2,reg2)) {
+ pCode *pct3 = findNextInstruction(pct2->next);
+ /* Check following instructions are not relying on the use of W or the Z flag condiction */
+ if ((pCodeSearchCondition(pct3,PCC_Z,0) < 1) || (pCodeSearchCondition(pct3,PCC_W,0) < 1)) {
+ DFPRINTF((stderr, " optimising MOVF reg ... MOVF reg,W MOVWF reg2 to MOVWF reg2 ...\n"));
+ pct2->seq = pc1->seq;
+ unlinkpCode(pct2);
+ pCodeInsertBefore(pc1,pct2);
+ if(regUsedinRange(pct2,0,reg))
+ Remove2pcodes(pcfl_used, pc2, NULL, reg, can_free);
+ else
+ Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
+
+ total_registers_saved++; // debugging stats.
+ return 1;
+ }
+ }
+ }
+ }
+
+ pct1 = findPrevInstruction(pc1->prev);
+ if(pct1 && (PCI(pct1)->pcflow == PCI(pc1)->pcflow)) {
+
+ if ( (PCI(pct1)->op == POC_MOVFW) &&
+ (PCI(pc2)->op == POC_MOVFW)) {
+
+ reg1 = getRegFromInstruction(pct1);
+ if(reg1 && !regUsedinRange(pc1,pc2,reg1)) {
+ DFPRINTF((stderr, " optimising MOVF reg1,W MOVWF reg ... MOVF reg,W\n"));
+ /*
+ Change:
+
+ movf reg1,w
+ movwf reg
+
+ stuff...
+ movf reg,w
+
+ To:
+
+ stuff...
+
+ movf reg1,w
+
+ Or, if we're not deleting the register then the "To" is:
+
+ stuff...
+
+ movf reg1,w
+ movwf reg
+ */
+ pct2 = newpCode(PCI(pc2)->op, PCI(pct1)->pcop);
+ pCodeInsertAfter(pc2, pct2);
+ PCI(pct2)->pcflow = PCFL(pcfl_used);
+ pct2->seq = pc2->seq;
+
+ if(can_free) {
+ Remove2pcodes(pcfl_used, pc1, pc2, reg, can_free);
+ } else {
+ /* If we're not freeing the register then that means (probably)
+ * the register is needed somewhere else.*/
+ unlinkpCode(pc1);
+ pCodeInsertAfter(pct2, pc1);
+
+ Remove2pcodes(pcfl_used, pc2, NULL, reg, can_free);
+ }
+
+ Remove2pcodes(pcfl_used, pct1, NULL, reg1, 0);
+ total_registers_saved++; // debugging stats.
+
+ }
+ /* Note this else if is same conditional as the if - DELETE ME
+ } else if ( (PCI(pct1)->op == POC_MOVWF) &&
+ (PCI(pc2)->op == POC_MOVFW)) {
+ DFPRINTF(stderr, " optimising MOVF reg1,W MOVWF reg ... MOVF reg,W\n");
+ if(optimize_level > 1 && can_free) {
+ pct2 = newpCode(POC_MOVFW, PCI(pc1)->pcop);
+ pCodeInsertAfter(pc2, pct2);
+ Remove2pcodes(pcfl_used, pc1, pc2, reg, 1);
+ total_registers_saved++; // debugging stats.
+ }
+ */
+ }
+ }
}
return (total_registers_saved != t);
}
/*-----------------------------------------------------------------*
- * void pCodeRegOptimeRegUsage(pBlock *pb)
- *-----------------------------------------------------------------*/
+* void pCodeRegOptimeRegUsage(pBlock *pb)
+*-----------------------------------------------------------------*/
void OptimizeRegUsage(set *fregs, int optimize_multi_uses, int optimize_level)
{
- regs *reg;
- int used;
- pCode *pc1=NULL, *pc2=NULL;
-
-
- while(fregs) {
- pCode *pcfl_used, *pcfl_assigned;
-
- /* Step through the set by directly accessing the 'next' pointer.
- * We could also step through by using the set API, but the
- * the (debug) calls to print instructions affect the state
- * of the set pointers */
-
- reg = fregs->item;
- fregs = fregs->next;
-/*
-if (strcmp(reg->name,"_SubState")==0)
- fprintf(stderr,"Reg: %s\n",reg->name);
-*/
-
- if(reg->type == REG_SFR || reg->type == REG_STK || reg->isPublic || reg->isExtern|| reg->isFixed) {
- //fprintf(stderr,"skipping SFR: %s\n",reg->name);
- continue;
- }
-
- pcfl_used = setFirstItem(reg->reglives.usedpFlows);
- pcfl_assigned = setFirstItem(reg->reglives.assignedpFlows);
-
- used = elementsInSet(reg->reglives.usedpCodes);
- if(used == 2) {
-
- /*
- * In this section, all registers that are used in only in two
- * instructions are examined. If possible, they're optimized out.
- */
-
-/*
- fprintf (stderr, "OptimizeRegUsage: %s addr=0x%03x rIdx=0x%03x type=%d used=%d\n",
- reg->name,
- reg->address,
- reg->rIdx, reg->type, used);
-*/
- pc1 = setFirstItem(reg->reglives.usedpCodes);
- pc2 = setNextItem(reg->reglives.usedpCodes);
-
- if(pcfl_used && pcfl_assigned) {
-
- /*
- expected case - the register has been assigned a value and is
- subsequently used
- */
-
- //fprintf(stderr," used only twice\n");
- if(pcfl_used->seq == pcfl_assigned->seq) {
-
- //fprintf(stderr, " and used in same flow\n");
-
- pCodeOptime2pCodes(pc1, pc2, pcfl_used, reg, 1,optimize_level);
-
- } else {
- // fprintf(stderr, " and used in different flows\n");
-
- }
-
- } else if(pcfl_used) {
-
- /*
- register has been used twice without ever being assigned */
- fprintf(stderr,"WARNING %s: reg %s used without being assigned\n",__FUNCTION__,reg->name);
-
- } else {
- fprintf(stderr,"WARNING %s: reg %s assigned without being used\n",__FUNCTION__,reg->name);
- Remove2pcodes(pcfl_assigned, pc1, pc2, reg, 1);
- total_registers_saved++; // debugging stats.
- }
- } else {
-
- /* register has been used either once, or more than twice */
-
- if(used && !pcfl_used && pcfl_assigned) {
- pCode *pc;
-
- fprintf(stderr,"WARNING %s: reg %s assigned without being used\n",__FUNCTION__,reg->name);
-
- pc = setFirstItem(reg->reglives.usedpCodes);
- while(pc) {
-
- pcfl_assigned = PCODE(PCI(pc)->pcflow);
- Remove1pcode(pc, reg,2);
-
- deleteSetItem (&(PCFL(pcfl_assigned)->registers), reg);
- /*
- deleteSetItem (&(reg->reglives.usedpCodes),pc);
- pc->destruct(pc);
- */
- pc = setNextItem(reg->reglives.usedpCodes);
- }
-
-
- reg->isFree = 1;
- reg->wasUsed = 0;
-
- total_registers_saved++; // debugging stats.
- } else if( (used > 2) && optimize_multi_uses) {
-
- set *rset1=NULL;
- set *rset2=NULL;
- int searching=1;
-
- pCodeFlow *pcfl1=NULL, *pcfl2=NULL;
-
- /* examine the number of times this register is used */
-
-
- rset1 = reg->reglives.usedpCodes;
- while(rset1 && searching) {
-
- pc1 = rset1->item;
- rset2 = rset1->next;
-
- if(pc1 && isPCI(pc1) && ( (pcfl1 = PCI(pc1)->pcflow) != NULL) ) {
-
- //while(rset2 && searching) {
- if(rset2) {
-
- pc2 = rset2->item;
- if(pc2 && isPCI(pc2) && ( (pcfl2 = PCI(pc2)->pcflow) != NULL) ) {
- if(pcfl2 == pcfl1) {
-
- if(pCodeOptime2pCodes(pc1, pc2, pcfl_used, reg, 0,optimize_level))
- searching = 0;
+ regs *reg;
+ int used;
+ pCode *pc1=NULL, *pc2=NULL;
+
+
+ while(fregs) {
+ pCode *pcfl_used, *pcfl_assigned;
+
+ /* Step through the set by directly accessing the 'next' pointer.
+ * We could also step through by using the set API, but the
+ * the (debug) calls to print instructions affect the state
+ * of the set pointers */
+
+ reg = fregs->item;
+ fregs = fregs->next;
+ /*
+ if (strcmp(reg->name,"_SubState")==0)
+ fprintf(stderr,"Reg: %s\n",reg->name);
+ */
+
+ if(reg->type == REG_SFR || reg->type == REG_STK || reg->isPublic || reg->isExtern|| reg->isFixed) {
+ //fprintf(stderr,"skipping SFR: %s\n",reg->name);
+ continue;
+ }
+
+ pcfl_used = setFirstItem(reg->reglives.usedpFlows);
+ pcfl_assigned = setFirstItem(reg->reglives.assignedpFlows);
+
+ used = elementsInSet(reg->reglives.usedpCodes);
+ if(used == 2) {
+ /*
+ In this section, all registers that are used in only in two
+ instructions are examined. If possible, they're optimized out.
+ */
+
+ /*
+ fprintf (stderr, "OptimizeRegUsage: %s addr=0x%03x rIdx=0x%03x type=%d used=%d\n",
+ reg->name,
+ reg->address,
+ reg->rIdx, reg->type, used);
+ */
+ pc1 = setFirstItem(reg->reglives.usedpCodes);
+ pc2 = setNextItem(reg->reglives.usedpCodes);
+
+ if(pcfl_used && pcfl_assigned) {
+ /*
+ expected case - the register has been assigned a value and is
+ subsequently used
+ */
+
+ //fprintf(stderr," used only twice\n");
+ if(pcfl_used->seq == pcfl_assigned->seq) {
+
+ //fprintf(stderr, " and used in same flow\n");
+
+ pCodeOptime2pCodes(pc1, pc2, pcfl_used, reg, 1,optimize_level);
+
+ } else {
+ // fprintf(stderr, " and used in different flows\n");
+
+ }
+
+ } else if(pcfl_used) {
+
+ /* register has been used twice without ever being assigned */
+ fprintf(stderr,"WARNING %s: reg %s used without being assigned\n",__FUNCTION__,reg->name);
+
+ } else {
+ fprintf(stderr,"WARNING %s: reg %s assigned without being used\n",__FUNCTION__,reg->name);
+ Remove2pcodes(pcfl_assigned, pc1, pc2, reg, 1);
+ total_registers_saved++; // debugging stats.
+ }
+ } else {
+
+ /* register has been used either once, or more than twice */
+
+ if(used && !pcfl_used && pcfl_assigned) {
+ pCode *pc;
+
+ fprintf(stderr,"WARNING %s: reg %s assigned without being used\n",__FUNCTION__,reg->name);
+
+ pc = setFirstItem(reg->reglives.usedpCodes);
+ while(pc) {
+
+ pcfl_assigned = PCODE(PCI(pc)->pcflow);
+ Remove1pcode(pc, reg,2);
+
+ deleteSetItem (&(PCFL(pcfl_assigned)->registers), reg);
+ /*
+ deleteSetItem (&(reg->reglives.usedpCodes),pc);
+ pc->destruct(pc);
+ */
+ pc = setNextItem(reg->reglives.usedpCodes);
+ }
+
+
+ reg->isFree = 1;
+ reg->wasUsed = 0;
+
+ total_registers_saved++; // debugging stats.
+ } else if( (used > 2) && optimize_multi_uses) {
+
+ set *rset1=NULL;
+ set *rset2=NULL;
+ int searching=1;
+
+ pCodeFlow *pcfl1=NULL, *pcfl2=NULL;
+
+ /* examine the number of times this register is used */
+
+
+ rset1 = reg->reglives.usedpCodes;
+ while(rset1 && searching) {
+
+ pc1 = rset1->item;
+ rset2 = rset1->next;
+
+ if(pc1 && isPCI(pc1) && ( (pcfl1 = PCI(pc1)->pcflow) != NULL) ) {
+
+ //while(rset2 && searching) {
+ if(rset2) {
+
+ pc2 = rset2->item;
+ if(pc2 && isPCI(pc2) && ( (pcfl2 = PCI(pc2)->pcflow) != NULL) ) {
+ if(pcfl2 == pcfl1) {
+
+ if(pCodeOptime2pCodes(pc1, pc2, pcfl_used, reg, 0,optimize_level))
+ searching = 0;
+ }
+ }
+
+ //rset2 = rset2->next;
+
+ }
+ }
+ rset1 = rset1->next;
+ }
+ }
}
- }
-
- //rset2 = rset2->next;
-
- }
- }
- rset1 = rset1->next;
}
- }
- }
-
- }
-
}
+
/*-----------------------------------------------------------------*
- * void pCodeRegOptimeRegUsage(pBlock *pb)
- *-----------------------------------------------------------------*/
+* void pCodeRegOptimeRegUsage(pBlock *pb)
+*-----------------------------------------------------------------*/
void pCodeRegOptimizeRegUsage(int level)
{
-
- int passes;
- int saved = 0;
- int t = total_registers_saved;
-
- if(!register_optimization)
- return;
+
+ int passes;
+ int saved = 0;
+ int t = total_registers_saved;
+
+ if(!register_optimization)
+ return;
#define OPT_PASSES 4
- passes = OPT_PASSES;
-
- do {
- saved = total_registers_saved;
+ passes = OPT_PASSES;
+
+ do {
+ saved = total_registers_saved;
+
+ /* Identify registers used in one flow sequence */
+ OptimizeRegUsage(dynAllocRegs,level, (OPT_PASSES-passes));
+ OptimizeRegUsage(dynStackRegs,level, (OPT_PASSES-passes));
+ OptimizeRegUsage(dynDirectRegs,0, (OPT_PASSES-passes));
+
+ if(total_registers_saved != saved)
+ DFPRINTF((stderr, " *** pass %d, Saved %d registers, total saved %d ***\n",
+ (1+OPT_PASSES-passes),total_registers_saved-saved,total_registers_saved));
+
+ passes--;
+
+ } while( passes && ((total_registers_saved != saved) || (passes==OPT_PASSES-1)) );
+
+ if(total_registers_saved == t)
+ DFPRINTF((stderr, "No registers saved on this pass\n"));
- /* Identify registers used in one flow sequence */
- OptimizeRegUsage(dynAllocRegs,level, (OPT_PASSES-passes));
- OptimizeRegUsage(dynStackRegs,level, (OPT_PASSES-passes));
- OptimizeRegUsage(dynDirectRegs,0, (OPT_PASSES-passes));
- if(total_registers_saved != saved)
- DFPRINTF((stderr, " *** pass %d, Saved %d registers, total saved %d ***\n",
- (1+OPT_PASSES-passes),total_registers_saved-saved,total_registers_saved));
-
- passes--;
-
- } while( passes && ((total_registers_saved != saved) || (passes==OPT_PASSES-1)) );
-
- if(total_registers_saved == t)
- DFPRINTF((stderr, "No registers saved on this pass\n"));
-
-
-/*
- fprintf(stderr,"dynamically allocated regs:\n");
- dbg_regusage(dynAllocRegs);
- fprintf(stderr,"stack regs:\n");
- dbg_regusage(dynStackRegs);
- fprintf(stderr,"direct regs:\n");
- dbg_regusage(dynDirectRegs);
-*/
+ /*
+ fprintf(stderr,"dynamically allocated regs:\n");
+ dbg_regusage(dynAllocRegs);
+ fprintf(stderr,"stack regs:\n");
+ dbg_regusage(dynStackRegs);
+ fprintf(stderr,"direct regs:\n");
+ dbg_regusage(dynDirectRegs);
+ */
}
/*-----------------------------------------------------------------*
- * void RegsUnMapLiveRanges(set *regset)
- *
- *-----------------------------------------------------------------*/
+* void RegsUnMapLiveRanges(set *regset)
+*
+*-----------------------------------------------------------------*/
void RegsSetUnMapLiveRanges(set *regset)
{
- regs *reg;
-
- while(regset) {
- reg = regset->item;
- regset = regset->next;
-
-
- deleteSet(®->reglives.usedpCodes);
- deleteSet(®->reglives.usedpFlows);
- deleteSet(®->reglives.assignedpFlows);
-
- }
-
+ regs *reg;
+
+ while(regset) {
+ reg = regset->item;
+ regset = regset->next;
+
+
+ deleteSet(®->reglives.usedpCodes);
+ deleteSet(®->reglives.usedpFlows);
+ deleteSet(®->reglives.assignedpFlows);
+
+ }
+
}
void RegsUnMapLiveRanges(void)
{
-
- RegsSetUnMapLiveRanges(dynAllocRegs);
- RegsSetUnMapLiveRanges(dynStackRegs);
- RegsSetUnMapLiveRanges(dynDirectRegs);
- RegsSetUnMapLiveRanges(dynProcessorRegs);
- RegsSetUnMapLiveRanges(dynDirectBitRegs);
- RegsSetUnMapLiveRanges(dynInternalRegs);
-
+
+ RegsSetUnMapLiveRanges(dynAllocRegs);
+ RegsSetUnMapLiveRanges(dynStackRegs);
+ RegsSetUnMapLiveRanges(dynDirectRegs);
+ RegsSetUnMapLiveRanges(dynProcessorRegs);
+ RegsSetUnMapLiveRanges(dynDirectBitRegs);
+ RegsSetUnMapLiveRanges(dynInternalRegs);
+
}
projects / fw / sdcc / blobdiff