private static void renameVar(MethodNode mth, SSAVar[] vars, int[] vers, BlockNode block) {
SSAVar[] inputVars = Arrays.copyOf(vars, vars.length);
for (InsnNode insn : block.getInstructions()) {
if (insn.getType() != InsnType.PHI) {
for (InsnArg arg : insn.getArguments()) {
if (!arg.isRegister()) {
continue;
}
RegisterArg reg = (RegisterArg) arg;
int regNum = reg.getRegNum();
SSAVar var = vars[regNum];
if (var == null) {
throw new JadxRuntimeException(
"Not initialized variable reg: "
+ regNum
+ ", insn: "
+ insn
+ ", block:"
+ block
+ ", method: "
+ mth);
}
var.use(reg);
}
}
RegisterArg result = insn.getResult();
if (result != null) {
int regNum = result.getRegNum();
vars[regNum] = mth.makeNewSVar(regNum, vers, result);
}
}
for (BlockNode s : block.getSuccessors()) {
PhiListAttr phiList = s.get(AType.PHI_LIST);
if (phiList == null) {
continue;
}
int j = s.getPredecessors().indexOf(block);
if (j == -1) {
throw new JadxRuntimeException("Can't find predecessor for " + block + " " + s);
}
for (PhiInsn phiInsn : phiList.getList()) {
if (j >= phiInsn.getArgsCount()) {
continue;
}
int regNum = phiInsn.getResult().getRegNum();
SSAVar var = vars[regNum];
if (var == null) {
continue;
}
var.use(phiInsn.getArg(j));
var.setUsedInPhi(phiInsn);
}
}
for (BlockNode domOn : block.getDominatesOn()) {
renameVar(mth, vars, vers, domOn);
}
System.arraycopy(inputVars, 0, vars, 0, vars.length);
}
private static void merge(InsnArg arg, LocalVar var) {
if (arg != null && arg.isRegister()) {
RegisterArg reg = (RegisterArg) arg;
if (var.getRegNum() == reg.getRegNum()) {
reg.mergeDebugInfo(var.getType(), var.getName());
}
}
}
private int addrChange(int addr, int addrInc, int line) {
int newAddr = addr + addrInc;
for (int i = addr + 1; i <= newAddr; i++) {
InsnNode insn = insnByOffset[i];
if (insn == null) {
continue;
}
for (InsnArg arg : insn.getArguments()) {
if (arg.isRegister()) {
activeRegisters[((RegisterArg) arg).getRegNum()] = arg;
}
}
RegisterArg res = insn.getResult();
if (res != null) {
activeRegisters[res.getRegNum()] = res;
}
}
setSourceLines(addr, newAddr, line);
return newAddr;
}