def isregassigned(var):
if (isInt(var)):
g.error("File:regallocfn.py=> isregassinged(): Error Spotted:---" +
str(var))
for i in range(0, 6):
if (g.regalloc[i] == var):
return i
return "-1"
def getreg(lineno, var):
# mode = 0
# if(g.splitins[lineno].op=="/" or g.splitins[lineno].op=="%"):
# print("Abcd")
####NOT FOR DIV
# if var not in g.nextuse[lineno-1].keys():
# return var
varsinline = []
# print(lineno)
# print(len(g.splitins))
# print(g.splitins[lineno-1].src1)
# print(g.splitins[lineno-1].src2)
# print(g.splitins[lineno-1].op)
# print(g.splitins[lineno-1].dst)
if (lineno <= len(g.splitins)):
varsinline.append(g.splitins[lineno - 1].src1)
varsinline.append(g.splitins[lineno - 1].src2)
varsinline.append(g.splitins[lineno - 1].dst)
varsinline.append("v_" + str(g.splitins[lineno - 1].src1index))
varsinline.append("v_" + str(g.splitins[lineno - 1].src2index))
varsinline.append("v_" + str(g.splitins[lineno - 1].dstindex))
else:
g.error("Error GOT file: regallocfn.py => getreg()")
# if(lineno==34):
# g.splitins[lineno-1].printobj()
# g.debug(varsinline)
# g.debug(g.regalloc)
for i in range(6):
if (g.regalloc[i] == '-1'):
# allocatedreg=i
g.regalloc[i] = var
if (not ('tempac' in var)):
print("\tmovl " + var + " , " + regname(i))
return regname(i)
for i in g.regalloc:
if i not in g.nextuse[lineno - 1].keys() and i not in varsinline:
print("\tmovl " + str(regname(isregassigned(i)) + " , " + str(i)))
# print("heelw")
regtoassign = isregassigned(i)
g.regalloc[regtoassign] = var
print("\tmovl " + var + " , " + regname(regtoassign))
return regname(regtoassign)
tempvar = g.regalloc[0]
tempnextuse = g.nextuse[lineno - 1][tempvar]
for j in range(1, 6):
i = g.regalloc[j]
if i in varsinline:
continue
if (tempnextuse < g.nextuse[lineno - 1][i]):
tempvar = i
tempnextuse = g.nextuse[lineno - 1][i]
# print("reg ass " + str(isregassigned(tempvar))+ " at" + regname(isregassigned(tempvar)))
print("\tmovl " +
str(regname(isregassigned(tempvar)) + " , " + str(tempvar)))
regtoassign = isregassigned(tempvar)
g.regalloc[regtoassign] = var
print("\tmovl " + var + " , " + regname(regtoassign))
return regname(regtoassign)