You are forbidden to forbid anyone else to use, share and improve
what you give them. Help stamp out software-hoarding!
-------------------------------------------------------------------------*/
-#include <stdio.h>
-#include <stdlib.h>
-#include "SDCCglobl.h"
-#include "SDCCast.h"
-#include "SDCCmem.h"
-#include "SDCCy.h"
-#include "SDCChasht.h"
-#include "SDCCbitv.h"
-#include "SDCCset.h"
-#include "SDCCicode.h"
-#include "SDCClabel.h"
-#include "SDCCBBlock.h"
-#include "SDCCloop.h"
-#include "SDCCcse.h"
-#include "SDCCcflow.h"
-#include "SDCCdflow.h"
-#include "SDCClrange.h"
-#include "SDCCralloc.h"
+
+#include "common.h"
+#include "ralloc.h"
+#include "gen.h"
/*-----------------------------------------------------------------*/
/* At this point we start getting processor specific although */
{ REG_CND ,CND_IDX,REG_CND , "C" , "C" , "xreg", 0, 1 },
};
int mcs51_nRegs = 13;
-void spillThis (symbol *);
+static void spillThis (symbol *);
/*-----------------------------------------------------------------*/
/* allocReg - allocates register of given type */
/*-----------------------------------------------------------------*/
/* notUsedInRemaining - not used or defined in remain of the block */
/*-----------------------------------------------------------------*/
-int notUsedInRemaining (symbol *sym, eBBlock *ebp, iCode *ic)
+static int notUsedInRemaining (symbol *sym, eBBlock *ebp, iCode *ic)
{
return ((usedInRemaining (operandFromSymbol(sym),ic) ? 0 : 1) &&
allDefsOutOfRange (sym->defs,ic->seq,ebp->lSeq));
/*-----------------------------------------------------------------*/
/* allLRs - return true for all */
/*-----------------------------------------------------------------*/
-int allLRs (symbol *sym, eBBlock *ebp, iCode *ic)
+static int allLRs (symbol *sym, eBBlock *ebp, iCode *ic)
{
return 1;
}
/*-----------------------------------------------------------------*/
/* liveRangesWith - applies function to a given set of live range */
/*-----------------------------------------------------------------*/
-set *liveRangesWith (bitVect *lrs, int (func)(symbol *,eBBlock *, iCode *),
+static set *liveRangesWith (bitVect *lrs, int (func)(symbol *,eBBlock *, iCode *),
eBBlock *ebp, iCode *ic)
{
set *rset = NULL;
/*-----------------------------------------------------------------*/
/* leastUsedLR - given a set determines which is the least used */
/*-----------------------------------------------------------------*/
-symbol *leastUsedLR (set *sset)
+static symbol *leastUsedLR (set *sset)
{
symbol *sym = NULL, *lsym = NULL ;
/*-----------------------------------------------------------------*/
/* noOverLap - will iterate through the list looking for over lap */
/*-----------------------------------------------------------------*/
-int noOverLap (set *itmpStack, symbol *fsym)
+static int noOverLap (set *itmpStack, symbol *fsym)
{
symbol *sym;
/*-----------------------------------------------------------------*/
/* isFree - will return 1 if the a free spil location is found */
/*-----------------------------------------------------------------*/
-DEFSETFUNC(isFree)
+static DEFSETFUNC(isFree)
{
symbol *sym = item;
V_ARG(symbol **,sloc);
/*-----------------------------------------------------------------*/
/* spillLRWithPtrReg :- will spil those live ranges which use PTR */
/*-----------------------------------------------------------------*/
-void spillLRWithPtrReg (symbol *forSym)
+static void spillLRWithPtrReg (symbol *forSym)
{
symbol *lrsym;
regs *r0,*r1;
/*-----------------------------------------------------------------*/
/* createStackSpil - create a location on the stack to spil */
/*-----------------------------------------------------------------*/
-symbol *createStackSpil (symbol *sym)
+static symbol *createStackSpil (symbol *sym)
{
symbol *sloc= NULL;
int useXstack, model, noOverlay;
/*-----------------------------------------------------------------*/
/* isSpiltOnStack - returns true if the spil location is on stack */
/*-----------------------------------------------------------------*/
-bool isSpiltOnStack (symbol *sym)
+static bool isSpiltOnStack (symbol *sym)
{
link *etype;
/*-----------------------------------------------------------------*/
/* spillThis - spils a specific operand */
/*-----------------------------------------------------------------*/
-void spillThis (symbol *sym)
+static void spillThis (symbol *sym)
{
int i;
/* if this is rematerializable or has a spillLocation
/*-----------------------------------------------------------------*/
/* selectSpil - select a iTemp to spil : rather a simple procedure */
/*-----------------------------------------------------------------*/
-symbol *selectSpil (iCode *ic, eBBlock *ebp, symbol *forSym)
+static symbol *selectSpil (iCode *ic, eBBlock *ebp, symbol *forSym)
{
bitVect *lrcs= NULL ;
set *selectS ;
/*-----------------------------------------------------------------*/
/* spilSomething - spil some variable & mark registers as free */
/*-----------------------------------------------------------------*/
-bool spilSomething (iCode *ic, eBBlock *ebp, symbol *forSym)
+static bool spilSomething (iCode *ic, eBBlock *ebp, symbol *forSym)
{
symbol *ssym;
int i ;
/*-----------------------------------------------------------------*/
/* getRegGpr - will try for GPR if not spil */
/*-----------------------------------------------------------------*/
-regs *getRegGpr (iCode *ic, eBBlock *ebp,symbol *sym)
+static regs *getRegGpr (iCode *ic, eBBlock *ebp,symbol *sym)
{
regs *reg;
if (!mcs51_ptrRegReq)
if ((reg = allocReg(REG_PTR)))
return reg ;
-
+
/* we have to spil */
if (!spilSomething (ic,ebp,sym))
return NULL ;
/* deassignLRs - check the live to and if they have registers & are*/
/* not spilt then free up the registers */
/*-----------------------------------------------------------------*/
-void deassignLRs (iCode *ic, eBBlock *ebp)
+static void deassignLRs (iCode *ic, eBBlock *ebp)
{
symbol *sym;
int k;
/*-----------------------------------------------------------------*/
/* reassignLR - reassign this to registers */
/*-----------------------------------------------------------------*/
-void reassignLR (operand *op)
+static void reassignLR (operand *op)
{
symbol *sym = OP_SYMBOL(op);
int i;
/*-----------------------------------------------------------------*/
/* willCauseSpill - determines if allocating will cause a spill */
/*-----------------------------------------------------------------*/
-int willCauseSpill ( int nr, int rt)
+static int willCauseSpill ( int nr, int rt)
{
/* first check if there are any avlb registers
of te type required */
/*-----------------------------------------------------------------*/
/* serialRegAssign - serially allocate registers to the variables */
/*-----------------------------------------------------------------*/
-void serialRegAssign (eBBlock **ebbs, int count)
+static void serialRegAssign (eBBlock **ebbs, int count)
{
int i;
/* if we need ptr regs for the right side
then mark it */
- if (POINTER_GET(ic) && getSize(OP_SYMBOL(IC_LEFT(ic))->type) < 2) {
+ if (POINTER_GET(ic) && getSize(OP_SYMBOL(IC_LEFT(ic))->type)
+ <= PTRSIZE)
+ {
mcs51_ptrRegReq++;
ptrRegSet = 1;
}
/*-----------------------------------------------------------------*/
/* rUmaskForOp :- returns register mask for an operand */
/*-----------------------------------------------------------------*/
-bitVect *rUmaskForOp (operand *op)
+static bitVect *rUmaskForOp (operand *op)
{
bitVect *rumask;
symbol *sym;
/*-----------------------------------------------------------------*/
/* regsUsedIniCode :- returns bit vector of registers used in iCode*/
/*-----------------------------------------------------------------*/
-bitVect *regsUsedIniCode (iCode *ic)
+static bitVect *regsUsedIniCode (iCode *ic)
{
bitVect *rmask = newBitVect(mcs51_nRegs);
/*-----------------------------------------------------------------*/
/* createRegMask - for each instruction will determine the regsUsed*/
/*-----------------------------------------------------------------*/
-void createRegMask (eBBlock **ebbs, int count)
+static void createRegMask (eBBlock **ebbs, int count)
{
int i;
/*-----------------------------------------------------------------*/
/* rematStr - returns the rematerialized string for a remat var */
/*-----------------------------------------------------------------*/
-char *rematStr (symbol *sym)
+static char *rematStr (symbol *sym)
{
char *s = buffer;
iCode *ic = sym->rematiCode;
/*-----------------------------------------------------------------*/
/* regTypeNum - computes the type & number of registers required */
/*-----------------------------------------------------------------*/
-void regTypeNum ()
+static void regTypeNum ()
{
symbol *sym;
int k;
/*-----------------------------------------------------------------*/
/* freeAllRegs - mark all registers as free */
/*-----------------------------------------------------------------*/
-void freeAllRegs()
+static void freeAllRegs()
{
int i;
/*-----------------------------------------------------------------*/
/* deallocStackSpil - this will set the stack pointer back */
/*-----------------------------------------------------------------*/
-DEFSETFUNC(deallocStackSpil)
+static DEFSETFUNC(deallocStackSpil)
{
symbol *sym = item;
/*-----------------------------------------------------------------*/
/* packRegsForAssign - register reduction for assignment */
/*-----------------------------------------------------------------*/
-int packRegsForAssign (iCode *ic,eBBlock *ebp)
+static int packRegsForAssign (iCode *ic,eBBlock *ebp)
{
iCode *dic, *sic;
if (SKIP_IC2(dic))
continue;
-
+
+ if (IS_TRUE_SYMOP(IC_RESULT(dic)) &&
+ IS_OP_VOLATILE(IC_RESULT(dic))) {
+ dic = NULL;
+ break;
+ }
+
if (IS_SYMOP(IC_RESULT(dic)) &&
IC_RESULT(dic)->key == IC_RIGHT(ic)->key) {
if (POINTER_SET(dic))
}
remiCodeFromeBBlock(ebp,ic);
+ hTabDeleteItem (&iCodehTab,ic->key,ic,DELETE_ITEM,NULL);
return 1;
}
/*-----------------------------------------------------------------*/
/* findAssignToSym : scanning backwards looks for first assig found*/
/*-----------------------------------------------------------------*/
-iCode *findAssignToSym (operand *op,iCode *ic)
+static iCode *findAssignToSym (operand *op,iCode *ic)
{
iCode *dic;
/*-----------------------------------------------------------------*/
/* packRegsForSupport :- reduce some registers for support calls */
/*-----------------------------------------------------------------*/
-int packRegsForSupport (iCode *ic, eBBlock *ebp)
+static int packRegsForSupport (iCode *ic, eBBlock *ebp)
{
int change = 0 ;
/* for the left & right operand :- look to see if the
IC_LEFT(ic)->operand.symOperand =
IC_RIGHT(dic)->operand.symOperand;
IC_LEFT(ic)->key = IC_RIGHT(dic)->operand.symOperand->key;
- remiCodeFromeBBlock(ebp,dic);
+ remiCodeFromeBBlock(ebp,dic);
+ hTabDeleteItem (&iCodehTab,dic->key,dic,DELETE_ITEM,NULL);
change++;
}
IC_RIGHT(ic)->key = IC_RIGHT(dic)->operand.symOperand->key;
remiCodeFromeBBlock(ebp,dic);
+ hTabDeleteItem (&iCodehTab,dic->key,dic,DELETE_ITEM,NULL);
change ++;
}
/* only upto 2 bytes since we cannot predict
the usage of b, & acc */
- if (getSize(operandType(op)) > 2 &&
+ if (getSize(operandType(op)) > (fReturnSize - 2) &&
ic->op != RETURN &&
ic->op != SEND)
return NULL;
operation is a '*','/' or '%' then 'b' may
cause a problem */
if (( dic->op == '%' || dic->op == '/' || dic->op == '*') &&
- getSize(aggrToPtr(operandType(op),FALSE)) >= 3)
+ getSize(operandType(op)) >= 3)
return NULL;
/* if left or right or result is in far space */
/*-----------------------------------------------------------------*/
/* packRegsForAccUse - pack registers for acc use */
/*-----------------------------------------------------------------*/
-void packRegsForAccUse (iCode *ic)
+static void packRegsForAccUse (iCode *ic)
{
iCode *uic;
bitVectFirstBit(OP_DEFS(IC_LEFT(ic))))))
return ;
- if (dic->op != '=' || POINTER_SET(dic) || IS_ITEMP(IC_RESULT(dic)))
+ if (dic->op != '=' || POINTER_SET(dic))
return;
/* we now we know that it has one & only one def & use
and the that the definition is an assignment */
IC_LEFT(ic) = IC_RIGHT(dic);
- remiCodeFromeBBlock(ebp,dic);
+ remiCodeFromeBBlock(ebp,dic);
+ hTabDeleteItem (&iCodehTab,dic->key,dic,DELETE_ITEM,NULL);
}
/*-----------------------------------------------------------------*/
if (IS_ARITHMETIC_OP(dic)) {
IC_RESULT(dic) = IC_RESULT(ic);
remiCodeFromeBBlock(ebp,ic);
+ hTabDeleteItem (&iCodehTab,ic->key,ic,DELETE_ITEM,NULL);
ic = ic->prev;
} else
OP_SYMBOL(IC_RIGHT(ic))->ruonly = 0;
if (dic) {
IC_RESULT(dic) = IC_RESULT(ic);
remiCodeFromeBBlock(ebp,ic);
+ hTabDeleteItem (&iCodehTab,ic->key,ic,DELETE_ITEM,NULL);
ic = ic->prev;
}
}
projects / fw / sdcc / blobdiff