#include "common.h" // Include everything in the SDCC src directory
#include "newalloc.h"
+#include "ralloc.h"
#include "pcode.h"
static pFile *the_pFile = NULL;
static int peepOptimizing = 1;
+static int GpCodeSequenceNumber = 1;
/****************************************************************/
/****************************************************************/
}
+char getpBlock_dbName(pBlock *pb)
+{
+ if(!pb)
+ return 0;
+
+ if(pb->cmemmap)
+ return pb->cmemmap->dbName;
+
+ return pb->dbName;
+}
+/*-----------------------------------------------------------------*/
+/* movepBlock2Head - given the dbname of a pBlock, move all */
+/* instances to the front of the doubly linked */
+/* list of pBlocks */
+/*-----------------------------------------------------------------*/
+
+void movepBlock2Head(char dbName)
+{
+ pBlock *pb;
+
+ pb = the_pFile->pbHead;
+
+ while(pb) {
+
+ if(getpBlock_dbName(pb) == dbName) {
+ pBlock *pbn = pb->next;
+ pb->next = the_pFile->pbHead;
+ the_pFile->pbHead->prev = pb;
+ the_pFile->pbHead = pb;
+
+ if(pb->prev)
+ pb->prev->next = pbn;
+
+ // If the pBlock that we just moved was the last
+ // one in the link of all of the pBlocks, then we
+ // need to point the tail to the block just before
+ // the one we moved.
+ // Note: if pb->next is NULL, then pb must have
+ // been the last pBlock in the chain.
+
+ if(pbn)
+ pbn->prev = pb->prev;
+ else
+ the_pFile->pbTail = pb->prev;
+
+ pb = pbn;
+
+ } else
+ pb = pb->next;
+
+ }
+
+}
+
void copypCode(FILE *of, char dbName)
{
pBlock *pb;
if(!of || !the_pFile)
return;
- fprintf(of,";dumping pcode to a file");
-
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(pb->cmemmap->dbName == dbName)
+ if(getpBlock_dbName(pb) == dbName)
printpBlock(of,pb);
}
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
fprintf(pFile,"\n\tNew pBlock\n\n");
- fprintf(pFile,"%s, dbName =%c\n",pb->cmemmap->sname,pb->cmemmap->dbName);
+ if(pb->cmemmap)
+ fprintf(pFile,"%s",pb->cmemmap->sname);
+ else
+ fprintf(pFile,"internal pblock");
+
+ fprintf(pFile,", dbName =%c\n",getpBlock_dbName(pb));
printpBlock(pFile,pb);
}
}
/*-----------------------------------------------------------------*/
/* newpCode - create and return a newly initialized pCode */
+/* */
+/* fixme - rename this */
+/* */
+/* The purpose of this routine is to create a new Instruction */
+/* pCode. This is called by gen.c while the assembly code is being */
+/* generated. */
+/* */
+/* Inouts: */
+/* PIC_OPCODE op - the assembly instruction we wish to create. */
+/* (note that the op is analogous to but not the */
+/* same thing as the opcode of the instruction.) */
+/* pCdoeOp *pcop - pointer to the operand of the instruction. */
+/* */
+/* Outputs: */
+/* a pointer to the new malloc'd pCode is returned. */
+/* */
+/* */
+/* */
/*-----------------------------------------------------------------*/
pCode *newpCode (PIC_OPCODE op, pCodeOp *pcop)
{
pci = Safe_calloc(1, sizeof(pCodeInstruction));
- pci->pc.analyze = genericAnalyze;
- pci->pc.destruct = genericDestruct;
- pci->pc.type = PC_OPCODE;
- pci->op = op;
- pci->pc.prev = pci->pc.next = NULL;
- pci->pcop = pcop;
- pci->dest = 0;
- pci->bit_inst = 0;
- pci->num_ops = 2;
- pci->inCond = pci->outCond = PCC_NONE;
- pci->pc.print = genericPrint;
- pci->pc.from = pci->pc.to = pci->pc.label = NULL;
+
+ pci->pc.analyze = genericAnalyze; // pointers to the generic functions, it
+ pci->pc.destruct = genericDestruct; // doesn't hurt to think about C++ virtual
+ pci->pc.print = genericPrint; // functions here.
+ pci->pc.type = PC_OPCODE; //
+ pci->op = op; // the "opcode" for the instruction.
+ pci->pc.prev = pci->pc.next = NULL; // The pCode gets linked in later
+ pci->pcop = pcop; // The operand of the instruction
+ pci->dest = 0; // e.g. W or F
+ pci->bit_inst = 0; // e.g. btfxx instructions
+ pci->num_ops = 2; // Most instructions have two ops...
+ pci->inCond = pci->outCond = PCC_NONE; /* input/output conditions. This is used during
+ * optimization to ascertain instruction dependencies.
+ * For example, if an instruction affects the Z bit,
+ * then the output condition for this instruction
+ * is "z bit is affected". The "conditions" are bit
+ * constants defined in pcode.h. */
+ pci->pc.from = pci->pc.to = NULL; // Flow linkages are defined later
+ pci->pc.label = NULL; // Labels get merged into instructions here.
+ pci->pc.pb = NULL; // The pBlock to which this instruction belongs
if(pcop && pcop->name)
printf("newpCode operand name %s\n",pcop->name);
+ // The most pic dependent portion of the pCode logic:
switch(op) {
case POC_ANDLW:
return (pCode *)pci;
}
+/*-----------------------------------------------------------------*/
+/* newpCodeWild - create a "wild" as in wild card pCode */
+/* */
+/* Wild pcodes are used during the peep hole optimizer to serve */
+/* as place holders for any instruction. When a snippet of code is */
+/* compared to a peep hole rule, the wild card opcode will match */
+/* any instruction. However, the optional operand and label are */
+/* additional qualifiers that must also be matched before the */
+/* line (of assembly code) is declared matched. Note that the */
+/* operand may be wild too. */
+/* */
+/*-----------------------------------------------------------------*/
+
pCode *newpCodeWild(int pCodeID, pCodeOp *optional_operand, pCodeOp *optional_label)
{
pcw->pc.type = PC_WILD;
pcw->pc.prev = pcw->pc.next = NULL;
pcw->pc.from = pcw->pc.to = pcw->pc.label = NULL;
+ pcw->pc.pb = NULL;
pcw->pc.analyze = genericAnalyze;
pcw->pc.destruct = genericDestruct;
pcc->pc.type = PC_COMMENT;
pcc->pc.prev = pcc->pc.next = NULL;
pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
+ pcc->pc.pb = NULL;
pcc->pc.analyze = genericAnalyze;
pcc->pc.destruct = genericDestruct;
pcf->pc.type = PC_FUNCTION;
pcf->pc.prev = pcf->pc.next = NULL;
pcf->pc.from = pcf->pc.to = pcf->pc.label = NULL;
+ pcf->pc.pb = NULL;
pcf->pc.analyze = genericAnalyze;
pcf->pc.destruct = genericDestruct;
pcl->pc.type = PC_LABEL;
pcl->pc.prev = pcl->pc.next = NULL;
pcl->pc.from = pcl->pc.to = pcl->pc.label = NULL;
+ pcl->pc.pb = NULL;
pcl->pc.analyze = genericAnalyze;
pcl->pc.destruct = genericDestruct;
return ( (pCode *)pcl);
}
+pCode *newpCodeLabelStr(char *str)
+{
+ pCode *pc = newpCodeLabel(-1);
+
+ PCL(pc)->label = Safe_strdup(str);
+
+ return pc;
+}
/*-----------------------------------------------------------------*/
/* newpBlock - create and return a pointer to a new pBlock */
_ALLOC(PpB,sizeof(pBlock));
PpB->next = PpB->prev = NULL;
+ PpB->function_entries = PpB->function_exits = PpB->function_calls = NULL;
+ PpB->registers = NULL;
+ PpB->visited = 0;
+
return PpB;
}
*-----------------------------------------------------------------*/
-pBlock *newpCodeChain(memmap *cm,pCode *pc)
+pBlock *newpCodeChain(memmap *cm,char c, pCode *pc)
{
- pBlock *pB = newpBlock();
+ pBlock *pB = newpBlock();
- pB->pcHead = pB->pcTail = pc;
+ pB->pcHead = pB->pcTail = pc;
pB->cmemmap = cm;
+ pB->dbName = c;
return pB;
}
PCOW(pcop)->id = id;
PCOW(pcop)->pcp = pcp;
PCOW(pcop)->subtype = subtype;
+ PCOW(pcop)->matched = NULL;
return pcop;
}
pcop->type = PO_BIT;
pcop->name = Safe_strdup(s);
PCOB(pcop)->bit = bit;
- PCOB(pcop)->inBitSpace = 1;
+ if(bit>=0)
+ PCOB(pcop)->inBitSpace = 1;
+ else
+ PCOB(pcop)->inBitSpace = 0;
return pcop;
}
pb->pcTail->next = pc;
pc->prev = pb->pcTail;
pc->next = NULL;
+ pc->pb = pb;
pb->pcTail = pc;
}
/* */
/* pCode processing */
/* */
-/* The stuff that follows is very PIC specific! */
-/* */
-/* */
/* */
/* */
/*-----------------------------------------------------------------*/
free(pc);
}
+
+void pBlockRegs(FILE *of, pBlock *pb)
+{
+
+ regs *r;
+
+ r = setFirstItem(pb->registers);
+ while (r) {
+ fprintf(of," %s\n",r->name);
+ r = setNextItem(pb->registers);
+ }
+}
+
+
static char *get_op( pCodeInstruction *pcc)
{
- if(pcc && pcc->pcop && pcc->pcop->name)
+ if(pcc && pcc->pcop) {
+
+
+
+ if(pcc->pcop->type == PO_GPR_TEMP) {
+ regs *r;
+ r = pic14_regWithIdx(PCOR(pcc->pcop)->r->rIdx);
+ //pcc->pcop->name = Safe_strdup(r->name);
+ //sprintf(buffer, "R0X%x",PCOR(pcc->pcop)->rIdx);
+ //pcc->pcop->name = Safe_strdup(PCOR(pcc->pcop)->r->name);
+ fprintf(stderr,"getop: getting %s\nfrom:\n",r->name); //pcc->pcop->name);
+ pBlockRegs(stderr,pcc->pc.pb);
+ return r->name;
+ }
+
+ if (pcc->pcop->name)
return pcc->pcop->name;
+
+ }
return "NO operand";
}
} else {
if(PCI(pc)->pcop->type == PO_BIT) {
+ if( PCI(pc)->num_ops == 2)
+ fprintf(of,"(%s >> 3),%c",get_op(PCI(pc)),((PCI(pc)->dest) ? 'F':'W'));
+ else
+ fprintf(of,"(1 << (%s & 7))",get_op(PCI(pc)));
+
+/*
if( PCI(pc)->num_ops == 2)
fprintf(of,"(%s >> 3),%c",PCI(pc)->pcop->name,((PCI(pc)->dest) ? 'F':'W'));
else
fprintf(of,"(1 << (%s & 7))",PCI(pc)->pcop->name);
+*/
}else {
fprintf(of,"%s",get_op(PCI(pc)));
i++;
exits = exits->next;
}
- if(i) i--;
+ //if(i) i--;
fprintf(of,"; %d exit point%c\n",i, ((i==1) ? ' ':'s'));
}else {
if(!pb)
return;
- for(pc = pb->pcHead; pc; pc = pc->next)
- pc->analyze(pc);
+ /* Find all of the registers used in this pBlock */
+ for(pc = pb->pcHead; pc; pc = pc->next) {
+ if(pc->type == PC_OPCODE) {
+ if(PCI(pc)->pcop && PCI(pc)->pcop->type == PO_GPR_TEMP) {
+
+ /* Loop through all of the registers declared so far in
+ this block and see if we find this new there */
+ regs *r = setFirstItem(pb->registers);
+
+ while(r) {
+ if(r->rIdx == PCOR(PCI(pc)->pcop)->r->rIdx) {
+ PCOR(PCI(pc)->pcop)->r = r;
+ break;
+ }
+ r = setNextItem(pb->registers);
+ }
+
+ if(!r) {
+ /* register wasn't found */
+ r = Safe_calloc(1, sizeof(regs));
+ memcpy(r,PCOR(PCI(pc)->pcop)->r, sizeof(regs));
+ addSet(&pb->registers, r);
+ PCOR(PCI(pc)->pcop)->r = r;
+ fprintf(stderr,"added register to pblock: reg %d\n",r->rIdx);
+ } else
+ fprintf(stderr,"found register in pblock: reg %d\n",r->rIdx);
+ }
+ }
+ }
}
int OptimizepBlock(pBlock *pb)
do {
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(pb->cmemmap->dbName == dbName)
+ if('*' == dbName || getpBlock_dbName(pb) == dbName)
matches += OptimizepBlock(pb);
}
}
/* First, merge the labels with the instructions */
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(pb->cmemmap->dbName == dbName)
+ if('*' == dbName || getpBlock_dbName(pb) == dbName) {
pBlockMergeLabels(pb);
+ AnalyzepBlock(pb);
+ }
}
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(pb->cmemmap->dbName == dbName)
+ if('*' == dbName || getpBlock_dbName(pb) == dbName)
OptimizepBlock(pb);
}
/* Now build the call tree.
First we examine all of the pCodes for functions.
-
+ Keep in mind that the function boundaries coincide
+ with pBlock boundaries.
+
+ The algorithm goes something like this:
+ We have two nested loops. The outer loop iterates
+ through all of the pBlocks/functions. The inner
+ loop iterates through all of the pCodes for
+ a given pBlock. When we begin iterating through
+ a pBlock, the variable pc_fstart, pCode of the start
+ of a function, is cleared. We then search for pCodes
+ of type PC_FUNCTION. When one is encountered, we
+ initialize pc_fstart to this and at the same time
+ associate a new pBranch object that signifies a
+ branch entry. If a return is found, then this signifies
+ a function exit point. We'll link the pCodes of these
+ returns to the matching pc_fstart.
+
+ When we're done, a doubly linked list of pBranches
+ will exist. The head of this list is stored in
+ `the_pFile', which is the meta structure for all
+ of the pCode. Look at the printCallTree function
+ on how the pBranches are linked together.
+
*/
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(pb->cmemmap->dbName == dbName) {
+ if('*' == dbName || getpBlock_dbName(pb) == dbName) {
pCode *pc_fstart=NULL;
for(pc = pb->pcHead; pc; pc = pc->next) {
if(pc->type == PC_FUNCTION) {
if (PCF(pc)->fname) {
+ // I'm not liking this....
// Found the beginning of a function.
_ALLOC(pbr,sizeof(pBranch));
pbr->pc = pc_fstart = pc;
pbr->next = NULL;
the_pFile->functions = pBranchAppend(the_pFile->functions,pbr);
+
+ // Here's a better way of doing the same:
+ addSet(&pb->function_entries, pc);
+
} else {
// Found an exit point in a function, e.g. return
// (Note, there may be more than one return per function)
if(pc_fstart)
pBranchLink(pc_fstart, pc);
+
+ addSet(&pb->function_exits, pc);
}
+ } else if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
+ addSet(&pb->function_calls,pc);
}
}
}
return 0;
}
+/*-----------------------------------------------------------------*/
+/* findFunction - Search for a function by name (given the name) */
+/* in the set of all functions that are in a pBlock */
+/* (note - I expect this to change because I'm planning to limit */
+/* pBlock's to just one function declaration */
+/*-----------------------------------------------------------------*/
+pCode *findFunction(char *fname)
+{
+ pBlock *pb;
+ pCode *pc;
+ if(!fname)
+ return NULL;
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+
+ pc = setFirstItem(pb->function_entries);
+ while(pc) {
+
+ if((pc->type == PC_FUNCTION) &&
+ (PCF(pc)->fname) &&
+ (strcmp(fname, PCF(pc)->fname)==0))
+ return pc;
+
+ pc = setNextItem(pb->function_entries);
+
+ }
+
+ }
+ return NULL;
+}
+
+void MarkUsedRegisters(set *regset)
+{
+
+ regs *r1,*r2;
+
+ for(r1=setFirstItem(regset); r1; r1=setNextItem(regset)) {
+ r2 = pic14_regWithIdx(r1->rIdx);
+ r2->isFree = 0;
+ r2->wasUsed = 1;
+ }
+}
+
+void pBlockStats(FILE *of, pBlock *pb)
+{
+
+ pCode *pc;
+ regs *r;
+
+ fprintf(of,"***\n pBlock Stats\n***\n");
+
+ // for now just print the first element of each set
+ pc = setFirstItem(pb->function_entries);
+ if(pc) {
+ fprintf(of,"entry\n");
+ pc->print(of,pc);
+ }
+ pc = setFirstItem(pb->function_exits);
+ if(pc) {
+ fprintf(of,"has an exit\n");
+ pc->print(of,pc);
+ }
+
+ pc = setFirstItem(pb->function_calls);
+ if(pc) {
+ fprintf(of,"functions called\n");
+
+ while(pc) {
+ pc->print(of,pc);
+ pc = setNextItem(pb->function_calls);
+ }
+ }
+
+ r = setFirstItem(pb->registers);
+ if(r) {
+ int n = elementsInSet(pb->registers);
+
+ fprintf(of,"%d compiler assigned register%c:\n",n, ( (n!=1) ? 's' : ' '));
+
+ while (r) {
+ fprintf(of," %s\n",r->name);
+ r = setNextItem(pb->registers);
+ }
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+void sequencepCode(void)
+{
+ pBlock *pb;
+ pCode *pc;
+
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+
+ pb->seq = GpCodeSequenceNumber+1;
+
+ for( pc = pb->pcHead; pc; pc = pc->next)
+ pc->seq = ++GpCodeSequenceNumber;
+ }
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+set *register_usage(pBlock *pb)
+{
+ pCode *pc,*pcn;
+ set *registers=NULL;
+ set *registersInCallPath = NULL;
+
+ /* check recursion */
+
+ pc = setFirstItem(pb->function_entries);
+
+ if(!pc)
+ return registers;
+
+ pb->visited = 1;
+
+ if(pc->type != PC_FUNCTION)
+ fprintf(stderr,"%s, first pc is not a function???\n",__FUNCTION__);
+
+ pc = setFirstItem(pb->function_calls);
+ for( ; pc; pc = setNextItem(pb->function_calls)) {
+
+ if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
+ char *dest = get_op(PCI(pc));
+
+ pcn = findFunction(dest);
+ if(pcn)
+ registersInCallPath = register_usage(pcn->pb);
+ } else
+ fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
+
+ }
+
+
+ pBlockStats(stderr,pb); // debug
+ if(registersInCallPath) {
+ /* registers were used in the functions this pBlock has called */
+ /* so now, we need to see if these collide with the ones we are */
+ /* using here */
+
+ regs *r1,*r2, *newreg;
+
+ fprintf(stderr,"comparing registers\n");
+
+ r1 = setFirstItem(registersInCallPath);
+ while(r1) {
+
+ r2 = setFirstItem(pb->registers);
+
+ while(r2) {
+
+ if(r2->rIdx == r1->rIdx) {
+ newreg = pic14_findFreeReg();
+
+
+ if(!newreg) {
+ fprintf(stderr,"Bummer, no more registers.\n");
+ exit(1);
+ }
+
+ fprintf(stderr,"Cool found register collision nIdx=%d moving to %d\n",
+ r1->rIdx, newreg->rIdx);
+ r2->rIdx = newreg->rIdx;
+ //if(r2->name) free(r2->name);
+ r2->name = Safe_strdup(newreg->name);
+ newreg->isFree = 0;
+ newreg->wasUsed = 1;
+ }
+ r2 = setNextItem(pb->registers);
+ }
+
+ r1 = setNextItem(registersInCallPath);
+ }
+
+ /* Collisions have been resolved. Now free the registers in the call path */
+ r1 = setFirstItem(registersInCallPath);
+ while(r1) {
+ newreg = pic14_regWithIdx(r1->rIdx);
+ newreg->isFree = 1;
+ r1 = setNextItem(registersInCallPath);
+ }
+
+ } else
+ MarkUsedRegisters(pb->registers);
+
+ registers = unionSets(pb->registers, registersInCallPath, THROW_NONE);
+
+ if(registers)
+ fprintf(stderr,"returning regs\n");
+ else
+ fprintf(stderr,"not returning regs\n");
+
+ fprintf(stderr,"pBlock after register optim.\n");
+ pBlockStats(stderr,pb); // debug
+
+
+ return registers;
+}
+
+/*-----------------------------------------------------------------*/
+/* printCallTree - writes the call tree to a file */
+/* */
+/*-----------------------------------------------------------------*/
+void pct2(FILE *of,pBlock *pb,int indent)
+{
+ pCode *pc,*pcn;
+ int i;
+ // set *registersInCallPath = NULL;
+
+ if(!of)
+ return;// registers;
+
+ if(indent > 10)
+ return; // registers; //recursion ?
+
+ pc = setFirstItem(pb->function_entries);
+
+ if(!pc)
+ return;
+
+ pb->visited = 0;
+
+ for(i=0;i<indent;i++) // Indentation
+ fputc(' ',of);
+
+ if(pc->type == PC_FUNCTION)
+ fprintf(of,"%s\n",PCF(pc)->fname);
+ else
+ return; // ???
+
+
+ pc = setFirstItem(pb->function_calls);
+ for( ; pc; pc = setNextItem(pb->function_calls)) {
+
+ if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
+ char *dest = get_op(PCI(pc));
+
+ pcn = findFunction(dest);
+ if(pcn)
+ pct2(of,pcn->pb,indent+1);
+ } else
+ fprintf(of,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
+
+ }
+
+
+}
+
+#if 0
+ fprintf(stderr,"pBlock before register optim.\n");
+ pBlockStats(stderr,pb); // debug
+
+ if(registersInCallPath) {
+ /* registers were used in the functions this pBlock has called */
+ /* so now, we need to see if these collide with the ones we are using here */
+
+ regs *r1,*r2, *newreg;
+
+ fprintf(stderr,"comparing registers\n");
+
+ r1 = setFirstItem(registersInCallPath);
+ while(r1) {
+
+ r2 = setFirstItem(pb->registers);
+
+ while(r2) {
+
+ if(r2->rIdx == r1->rIdx) {
+ newreg = pic14_findFreeReg();
+
+
+ if(!newreg) {
+ fprintf(stderr,"Bummer, no more registers.\n");
+ exit(1);
+ }
+
+ fprintf(stderr,"Cool found register collision nIdx=%d moving to %d\n",
+ r1->rIdx, newreg->rIdx);
+ r2->rIdx = newreg->rIdx;
+ //if(r2->name) free(r2->name);
+ r2->name = Safe_strdup(newreg->name);
+ newreg->isFree = 0;
+ newreg->wasUsed = 1;
+ }
+ r2 = setNextItem(pb->registers);
+ }
+
+ r1 = setNextItem(registersInCallPath);
+ }
+
+ /* Collisions have been resolved. Now free the registers in the call path */
+ r1 = setFirstItem(registersInCallPath);
+ while(r1) {
+ newreg = pic14_regWithIdx(r1->rIdx);
+ newreg->isFree = 1;
+ r1 = setNextItem(registersInCallPath);
+ }
+
+ } else
+ MarkUsedRegisters(pb->registers);
+
+ registers = unionSets(pb->registers, registersInCallPath, THROW_NONE);
+
+ if(registers)
+ fprintf(stderr,"returning regs\n");
+ else
+ fprintf(stderr,"not returning regs\n");
+
+ fprintf(stderr,"pBlock after register optim.\n");
+ pBlockStats(stderr,pb); // debug
+
+
+ return registers;
+
+#endif
+
+
+/*-----------------------------------------------------------------*/
+/* printCallTree - writes the call tree to a file */
+/* */
+/*-----------------------------------------------------------------*/
+
void printCallTree(FILE *of)
{
pBranch *pbr;
+ pBlock *pb;
+ pCode *pc;
if(!the_pFile)
return;
if(!of)
of = stderr;
- pbr = the_pFile->functions;
+ fprintf(of, "\npBlock statistics\n");
+ for(pb = the_pFile->pbHead; pb; pb = pb->next )
+ pBlockStats(stderr,pb);
+
+
fprintf(of,"Call Tree\n");
+ pbr = the_pFile->functions;
while(pbr) {
if(pbr->pc) {
- pCode *pc = pbr->pc;
+ pc = pbr->pc;
if(!ispCodeFunction(pc))
fprintf(of,"bug in call tree");
pbr = pbr->next;
}
+
+
+ /* Re-allocate the registers so that there are no collisions
+ * between local variables when one function call another */
+
+ pic14_deallocateAllRegs();
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ if(!pb->visited)
+ register_usage(pb);
+ }
+
+ fprintf(of,"\n**************\n\na better call tree\n");
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ if(pb->visited)
+ pct2(of,pb,0);
+ }
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ fprintf(of,"block dbname: %c\n", getpBlock_dbName(pb));
+ }
}
/*-----------------------------------------------------------------
peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
- pb = newpCodeChain(NULL, newpCode(POC_MOVWF, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
+ pb = newpCodeChain(NULL, 'W', newpCode(POC_MOVWF, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
addpCode2pBlock( pb, newpCode(POC_MOVFW, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
pcp->target = pb;
- pcp->replace = newpCodeChain(NULL, newpCode(POC_MOVWF, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
+ pcp->replace = newpCodeChain(NULL, 'W',newpCode(POC_MOVWF, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
/* Allocate space to store pointers to the wildcard variables */
pcp->nvars = 1;
{
pCodeOp *pcl;
pCodeOp *pcw;
+ pCodeOp *pcwb;
- pb = newpCodeChain(NULL, newpCode(POC_BTFSC, newpCodeOpWild(0,pcp,newpCodeOpBit(NULL,-1))) );
+ pcwb = newpCodeOpWild(0,pcp,newpCodeOpBit(NULL,-1));
+ pb = newpCodeChain(NULL, 'W',newpCode(POC_BTFSC,pcwb));
pcl = newpCodeOpLabel(-1);
pcw = newpCodeOpWild(1, pcp, pcl);
pcp->target = pb;
- pb = newpCodeChain(NULL, newpCode(POC_BTFSS, newpCodeOpWild(0,pcp,newpCodeOpBit(NULL,-1))) );
+ pb = newpCodeChain(NULL, 'W',newpCode(POC_BTFSS, pcwb));
addpCode2pBlock( pb, newpCodeWild(0,NULL,NULL));
addpCode2pBlock( pb, newpCodeWild(1,NULL,pcw));
pcw = newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER));
- pb = newpCodeChain(NULL, newpCode(POC_MOVWF, pcw));
+ pb = newpCodeChain(NULL, 'W', newpCode(POC_MOVWF, pcw));
addpCode2pBlock( pb, newpCode(POC_MOVWF, pcw));
pcp->target = pb;
- pb = newpCodeChain(NULL, newpCode(POC_MOVWF, pcw));
+ pb = newpCodeChain(NULL, 'W',newpCode(POC_MOVWF, pcw));
pcp->replace = pb;
if (PCI(pcd)->pcop->type == PO_WILD) {
index = PCOW(PCI(pcd)->pcop)->id;
+ fprintf(stderr,"destination is wild\n");
#ifdef DEBUG_PCODEPEEP
if (index > peepBlock->nvars) {
fprintf(stderr,"%s - variables exceeded\n",__FUNCTION__);
exit(1);
}
#endif
- if(peepBlock->vars[index])
- return (strcmp(peepBlock->vars[index],PCI(pcs)->pcop->name) == 0);
- else {
- peepBlock->vars[index] = PCI(pcs)->pcop->name;
- return 1;
+ PCOW(PCI(pcd)->pcop)->matched = PCI(pcs)->pcop;
+ {
+ char *n;
+
+ if(PCI(pcs)->pcop->type == PO_GPR_TEMP)
+ n = PCOR(PCI(pcs)->pcop)->r->name;
+ else
+ n = PCI(pcs)->pcop->name;
+
+ if(peepBlock->vars[index])
+ return (strcmp(peepBlock->vars[index],n) == 0);
+ else {
+ peepBlock->vars[index] = n; //PCI(pcs)->pcop->name;
+ return 1;
+ }
}
}
} else
}
if(PCW(pcd)->operand) {
+ PCOW(PCI(pcd)->pcop)->matched = PCI(pcs)->pcop;
if(peepBlock->vars[index]) {
int i = (strcmp(peepBlock->vars[index],PCI(pcs)->pcop->name) == 0);
if(i)
}
}
- pcs = findNextInstruction(pcs->next);
- fprintf(stderr," (next to match)\n");
- pcs->print(stderr,pcs);
+ pcs = findNextInstruction(pcs->next);
+ if(pcs) {
+ fprintf(stderr," (next to match)\n");
+ pcs->print(stderr,pcs);
+ }
+
return 1; /* wild card matches */
}
case PO_WILD:
/* Here we expand the wild card into the appropriate type: */
/* By recursively calling pCodeOpCopy */
- pcopnew = pCodeOpCopy(PCOW(pcop)->subtype);
- pcopnew->name = Safe_strdup(PCOW(pcop)->pcp->vars[PCOW(pcop)->id]);
+ if(PCOW(pcop)->matched)
+ pcopnew = pCodeOpCopy(PCOW(pcop)->matched);
+ else {
+ // Probably a label
+ pcopnew = pCodeOpCopy(PCOW(pcop)->subtype);
+ pcopnew->name = Safe_strdup(PCOW(pcop)->pcp->vars[PCOW(pcop)->id]);
+ fprintf(stderr,"copied a wild op named %s\n",pcopnew->name);
+ }
+
return pcopnew;
break;
break;
case PO_GPR_REGISTER:
+ case PO_GPR_TEMP:
case PO_SFR_REGISTER:
case PO_DIR:
case PO_STR:
fprintf(stderr," end of rule\n");
}
- if(matched) {
+ if(matched && pcin) {
/* So far we matched the rule up to the point of the conditions .
* In other words, all of the opcodes match. Now we need to see
matched = 0;
}
- if(matched) {
+ if(matched && pcin) {
pCode *pcprev;
pCode *pcr;
fprintf(stderr,"last thing matched\n");
pcin->print(stderr,pcin);
-
/* Unlink the original code */
pcprev = pc->prev;
pcprev->next = pcin;
while (pcr) {
pCodeOp *pcop=NULL;
/* If the replace pcode is an instruction with an operand, */
- /* then duplicate the operand (and expand wild cards in the process. */
+ /* then duplicate the operand (and expand wild cards in the process). */
if(pcr->type == PC_OPCODE) {
if(PCI(pcr)->pcop)
pcop = pCodeOpCopy(PCI(pcr)->pcop);
pCodeInsertAfter(pc,peepBlock->wildpCodes[PCW(pcr)->id]);
}
+
pc = pc->next;
+ pc->print(stderr,pc);
pcr = pcr->next;
}
projects / fw / sdcc / commitdiff