public void ReloadRegPool(char type, int[] available_Regs)
{
if (type == 'v')
vRegPool = new RegPool(available_Regs, log);
else if (type == 's')
sRegPool = new RegPool(available_Regs, log);
else
log.Error("'{0}' is an unknown type for a new RegPool (s or v only).", type);
}
public void ReloadRegPool(char type, int[] available_Regs)
{
if (type == 'v')
{
vRegPool = new RegPool(available_Regs, log);
}
else if (type == 's')
{
sRegPool = new RegPool(available_Regs, log);
}
else
{
log.Error("'{0}' is an unknown type for a new RegPool (s or v only).", type);
}
}
public Variables(bool UseRegPool, bool CalcRegUsage, Log log)
{
this.log = log;
if (UseRegPool)
{
sRegPool = new RegPool(log);
vRegPool = new RegPool(log);
}
if (CalcRegUsage)
{
sRegUsageCalc = new RegUsageCalc(true);
vRegUsageCalc = new RegUsageCalc(true);
}
}
public Variables(bool UseRegPool, bool CalcRegUsage, Log log)
{
this.log = log;
if (UseRegPool)
{
sRegPool = new RegPool(log);
vRegPool = new RegPool(log);
}
if (CalcRegUsage)
{
sRegUsageCalc = new RegUsageCalc(true);
vRegUsageCalc = new RegUsageCalc(true);
}
}
public void AssignRegNumbers(List <Stmt> gcnStmts)
{
foreach (Stmt stmt in gcnStmts)
{
// note: When using the 'free' keyword, variables are freed before the previous statement.
// Also, vars are freed before declarations so registers can be reused in the same instruction.
log.lineNum = stmt.lineNum;
////////////////////// free the vars //////////////////////
if (UsingRegPools)
{
foreach (Variable v in stmt.freeVars)
{
if (v.stmtTerminated != v.stmtDeclared)
{
(v.isScaler ? sRegPool : vRegPool).FreeReg(v.regNo);
}
else
{
log.Warning("Variable, {0}, was declared and last used in the same statement.", v.name);
}
}
}
////////////////////// declare new vars //////////////////////
// we first add variables that specify a register or variables
foreach (Variable v in stmt.newVars)
{
if (v.isRegisterNumSpecifed && !v.isRegisterFromAnotherVar)
{
// Adds a GcnVar to the Vars collection and also makes sure that it is valid.
// Lets add mark that register as used in the pool (if it is in the pool)
RegPool regPool = v.isScaler ? sRegPool : vRegPool;
if (UsingRegPools)
{
if (regPool.ReserveSpecificRegs(v.regNo, v.RegsRequired) < 0)
{
log.Error("The registers, {1}, used in '{0}' must was not found in the allowed register pool.", v.regNo, v.name);
}
}
// lets calculate usage
RegUsageCalc regUsageCalc = v.isScaler ? sRegUsageCalc : vRegUsageCalc;
if (regUsageCalc != null)
{
regUsageCalc.AddToCalc(v.size, stmt);
}
}
// process declarations with variable as register reference
else if (v.isRegisterFromAnotherVar)
{
Variable lu;
if (!varsByName.TryGetValue(v.variablesRegToCopy, out lu))
{
log.Error("Variable, '{0}', could not be found.", v.variablesRegToCopy);
}
else if (lu.stmtTerminated == null)
{
log.Error("Variable, '{0}', can not use the same register as '{1}' because its still in use.", v.name, lu.name);
}
else
{
int regNum = lu.regNo + v.variablesRegToCopyIndex;
RegPool regPool = v.isScaler ? sRegPool : vRegPool;
if (UsingRegPools)
{
v.regNo = regPool.ReserveSpecificRegs(regNum, v.size);
}
}
}
}
foreach (Variable v in stmt.newVars)
{
if (!v.isRegisterNumSpecifed) // exclude Registers with specified register numbers
{
v.regNo = (v.isScaler ? sRegPool : vRegPool).ReserveRegs(v.RegsRequired, v.RegsRequired);
}
}
// Replace the variables with register numbers.
//if (stmt.vars.Count > 0)
for (int i = stmt.vars.Count - 1; i >= 0; i--)
{
VariableUsageLoc v = stmt.vars[i];
stmt.options = stmt.options.Remove(v.startPos, v.varLength).Insert(v.startPos, v.RegAsString);
}
}
}