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hotspot/src/share/vm/c1/c1_LIRGenerator.cpp

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rev 10443 : imported patch c1_LIRGenerator


 133     move_to_temp(src->operand());
 134     return;
 135   } // else dest is a start node
 136 
 137   if (!dest->assigned()) {
 138     if (_loop == dest) {
 139       move_temp_to(dest->operand());
 140       dest->set_assigned();
 141     } else if (src != NULL) {
 142       emit_move(src->operand(), dest->operand());
 143       dest->set_assigned();
 144     }
 145   }
 146 }
 147 
 148 
 149 PhiResolver::~PhiResolver() {
 150   int i;
 151   // resolve any cycles in moves from and to virtual registers
 152   for (i = virtual_operands().length() - 1; i >= 0; i --) {
 153     ResolveNode* node = virtual_operands()[i];
 154     if (!node->visited()) {
 155       _loop = NULL;
 156       move(NULL, node);
 157       node->set_start_node();
 158       assert(_temp->is_illegal(), "move_temp_to() call missing");
 159     }
 160   }
 161 
 162   // generate move for move from non virtual register to abitrary destination
 163   for (i = other_operands().length() - 1; i >= 0; i --) {
 164     ResolveNode* node = other_operands()[i];
 165     for (int j = node->no_of_destinations() - 1; j >= 0; j --) {
 166       emit_move(node->operand(), node->destination_at(j)->operand());
 167     }
 168   }
 169 }
 170 
 171 
 172 ResolveNode* PhiResolver::create_node(LIR_Opr opr, bool source) {
 173   ResolveNode* node;
 174   if (opr->is_virtual()) {
 175     int vreg_num = opr->vreg_number();
 176     node = vreg_table().at_grow(vreg_num, NULL);
 177     assert(node == NULL || node->operand() == opr, "");
 178     if (node == NULL) {
 179       node = new ResolveNode(opr);
 180       vreg_table()[vreg_num] = node;
 181     }
 182     // Make sure that all virtual operands show up in the list when
 183     // they are used as the source of a move.
 184     if (source && !virtual_operands().contains(node)) {
 185       virtual_operands().append(node);
 186     }
 187   } else {
 188     assert(source, "");
 189     node = new ResolveNode(opr);
 190     other_operands().append(node);
 191   }
 192   return node;
 193 }
 194 
 195 
 196 void PhiResolver::move(LIR_Opr src, LIR_Opr dest) {
 197   assert(dest->is_virtual(), "");
 198   // tty->print("move "); src->print(); tty->print(" to "); dest->print(); tty->cr();
 199   assert(src->is_valid(), "");
 200   assert(dest->is_valid(), "");




 133     move_to_temp(src->operand());
 134     return;
 135   } // else dest is a start node
 136 
 137   if (!dest->assigned()) {
 138     if (_loop == dest) {
 139       move_temp_to(dest->operand());
 140       dest->set_assigned();
 141     } else if (src != NULL) {
 142       emit_move(src->operand(), dest->operand());
 143       dest->set_assigned();
 144     }
 145   }
 146 }
 147 
 148 
 149 PhiResolver::~PhiResolver() {
 150   int i;
 151   // resolve any cycles in moves from and to virtual registers
 152   for (i = virtual_operands().length() - 1; i >= 0; i --) {
 153     ResolveNode* node = virtual_operands().at(i);
 154     if (!node->visited()) {
 155       _loop = NULL;
 156       move(NULL, node);
 157       node->set_start_node();
 158       assert(_temp->is_illegal(), "move_temp_to() call missing");
 159     }
 160   }
 161 
 162   // generate move for move from non virtual register to abitrary destination
 163   for (i = other_operands().length() - 1; i >= 0; i --) {
 164     ResolveNode* node = other_operands().at(i);
 165     for (int j = node->no_of_destinations() - 1; j >= 0; j --) {
 166       emit_move(node->operand(), node->destination_at(j)->operand());
 167     }
 168   }
 169 }
 170 
 171 
 172 ResolveNode* PhiResolver::create_node(LIR_Opr opr, bool source) {
 173   ResolveNode* node;
 174   if (opr->is_virtual()) {
 175     int vreg_num = opr->vreg_number();
 176     node = vreg_table().at_grow(vreg_num, NULL);
 177     assert(node == NULL || node->operand() == opr, "");
 178     if (node == NULL) {
 179       node = new ResolveNode(opr);
 180       vreg_table().at_put(vreg_num, node);
 181     }
 182     // Make sure that all virtual operands show up in the list when
 183     // they are used as the source of a move.
 184     if (source && !virtual_operands().contains(node)) {
 185       virtual_operands().append(node);
 186     }
 187   } else {
 188     assert(source, "");
 189     node = new ResolveNode(opr);
 190     other_operands().append(node);
 191   }
 192   return node;
 193 }
 194 
 195 
 196 void PhiResolver::move(LIR_Opr src, LIR_Opr dest) {
 197   assert(dest->is_virtual(), "");
 198   // tty->print("move "); src->print(); tty->print(" to "); dest->print(); tty->cr();
 199   assert(src->is_valid(), "");
 200   assert(dest->is_valid(), "");


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