/*------------------------------------------------------------------------
- SDCCralloc.c - source file for register allocation. (8051) specific
+ SDCCralloc.c - source file for register allocation. 68HC08 specific
Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
if (!(sym->remat || sym->usl.spillLoc))
createStackSpil (sym);
- /* mark it has spilt & put it in the spilt set */
+ /* mark it as spilt & put it in the spilt set */
sym->isspilt = sym->spillA = 1;
_G.spiltSet = bitVectSetBit (_G.spiltSet, sym->key);
/* check if there are any live ranges that not
used in the remainder of the block */
- if (!_G.blockSpil && (selectS = liveRangesWith (lrcs, notUsedInRemaining, ebp, ic)))
+ if (!_G.blockSpil &&
+ !isiCodeInFunctionCall (ic) &&
+ (selectS = liveRangesWith (lrcs, notUsedInRemaining, ebp, ic)))
{
sym = leastUsedLR (selectS);
if (sym != forSym)
int j;
int ptrRegSet = 0;
- /* if it does not need or is spilt
+ /* Make sure any spill location is definately allocated */
+ if (sym->isspilt && !sym->remat && sym->usl.spillLoc &&
+ !sym->usl.spillLoc->allocreq) {
+ sym->usl.spillLoc->allocreq++;
+ }
+
+ /* if it does not need or is spilt
or is already assigned to registers
or will not live beyond this instructions */
if (!sym->nRegs ||
if (getenv("DISABLE_FILL_GAPS")) return;
- /* look for livernages that was spilt by the allocator */
+ /* look for liveranges that were spilt by the allocator */
for (sym = hTabFirstItem(liveRanges,&key) ; sym ;
sym = hTabNextItem(liveRanges,&key)) {
return 0;
}
-
/* if the true symbol is defined in far space or on stack
then we should not since this will increase register pressure */
#if 0
return 0; /* did not find */
/* if assignment then check that right is not a bit */
- if (ASSIGNMENT (dic) && !POINTER_SET (dic))
+ if (ASSIGNMENT (ic) && !POINTER_SET (ic))
{
- sym_link *etype = operandType (IC_RIGHT (dic));
+ sym_link *etype = operandType (IC_RESULT (dic));
if (IS_BITFIELD (etype))
{
/* if result is a bit too then it's ok */
- etype = operandType (IC_RESULT (dic));
+ etype = operandType (IC_RESULT (ic));
if (!IS_BITFIELD (etype))
- return 0;
- }
+ {
+ return 0;
+ }
+ }
}
/* if the result is on stack or iaccess then it must be
the same atleast one of the operands */
/* assignRegisters - assigns registers to each live range as need */
/*-----------------------------------------------------------------*/
void
-hc08_assignRegisters (eBBlock ** ebbs, int count)
+hc08_assignRegisters (ebbIndex * ebbi)
{
+ eBBlock ** ebbs = ebbi->bbOrder;
+ int count = ebbi->count;
iCode *ic;
int i;
recomputeLiveRanges (ebbs, count);
if (options.dump_pack)
- dumpEbbsToFileExt (DUMP_PACK, ebbs, count);
+ dumpEbbsToFileExt (DUMP_PACK, ebbi);
/* first determine for each live range the number of
registers & the type of registers required for each */
if (options.dump_rassgn)
{
- dumpEbbsToFileExt (DUMP_RASSGN, ebbs, count);
+ dumpEbbsToFileExt (DUMP_RASSGN, ebbi);
dumpLiveRanges (DUMP_LRANGE, liveRanges);
}
/* free up any _G.stackSpil locations allocated */
applyToSet (_G.stackSpil, deallocStackSpil);
_G.slocNum = 0;
- setToNull ((void **) &_G.stackSpil);
- setToNull ((void **) &_G.spiltSet);
+ setToNull ((void *) &_G.stackSpil);
+ setToNull ((void *) &_G.spiltSet);
/* mark all registers as free */
freeAllRegs ();