174 RegMask* Matcher::return_values_mask(const TypeTuple *range) {
175 uint cnt = range->cnt() - TypeFunc::Parms;
176 if (cnt == 0) {
177 return NULL;
178 }
179 RegMask* mask = NEW_RESOURCE_ARRAY(RegMask, cnt);
180
181 if (!ValueTypeReturnedAsFields) {
182 // Get ideal-register return type
183 uint ireg = range->field_at(TypeFunc::Parms)->ideal_reg();
184 // Get machine return register
185 OptoRegPair regs = return_value(ireg, false);
186
187 // And mask for same
188 mask[0].Clear();
189 mask[0].Insert(regs.first());
190 if (OptoReg::is_valid(regs.second())) {
191 mask[0].Insert(regs.second());
192 }
193 } else {
194 BasicType *sig_bt = NEW_RESOURCE_ARRAY(BasicType, cnt);
195 VMRegPair *vm_parm_regs = NEW_RESOURCE_ARRAY(VMRegPair, cnt);
196
197 for (uint i = 0; i < cnt; i++) {
198 sig_bt[i] = range->field_at(i+TypeFunc::Parms)->basic_type();
199 }
200
201 int regs = SharedRuntime::java_return_convention(sig_bt, vm_parm_regs, cnt);
202 assert(regs > 0, "should have been tested during graph construction");
203 for (uint i = 0; i < cnt; i++) {
204 mask[i].Clear();
205
206 OptoReg::Name reg1 = OptoReg::as_OptoReg(vm_parm_regs[i].first());
207 if (OptoReg::is_valid(reg1)) {
208 mask[i].Insert(reg1);
209 }
210 OptoReg::Name reg2 = OptoReg::as_OptoReg(vm_parm_regs[i].second());
211 if (OptoReg::is_valid(reg2)) {
212 mask[i].Insert(reg2);
213 }
214 }
215 }
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174 RegMask* Matcher::return_values_mask(const TypeTuple *range) {
175 uint cnt = range->cnt() - TypeFunc::Parms;
176 if (cnt == 0) {
177 return NULL;
178 }
179 RegMask* mask = NEW_RESOURCE_ARRAY(RegMask, cnt);
180
181 if (!ValueTypeReturnedAsFields) {
182 // Get ideal-register return type
183 uint ireg = range->field_at(TypeFunc::Parms)->ideal_reg();
184 // Get machine return register
185 OptoRegPair regs = return_value(ireg, false);
186
187 // And mask for same
188 mask[0].Clear();
189 mask[0].Insert(regs.first());
190 if (OptoReg::is_valid(regs.second())) {
191 mask[0].Insert(regs.second());
192 }
193 } else {
194 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, cnt);
195 VMRegPair* vm_parm_regs = NEW_RESOURCE_ARRAY(VMRegPair, cnt);
196
197 for (uint i = 0; i < cnt; i++) {
198 sig_bt[i] = range->field_at(i+TypeFunc::Parms)->basic_type();
199 }
200
201 int regs = SharedRuntime::java_return_convention(sig_bt, vm_parm_regs, cnt);
202 assert(regs > 0, "should have been tested during graph construction");
203 for (uint i = 0; i < cnt; i++) {
204 mask[i].Clear();
205
206 OptoReg::Name reg1 = OptoReg::as_OptoReg(vm_parm_regs[i].first());
207 if (OptoReg::is_valid(reg1)) {
208 mask[i].Insert(reg1);
209 }
210 OptoReg::Name reg2 = OptoReg::as_OptoReg(vm_parm_regs[i].second());
211 if (OptoReg::is_valid(reg2)) {
212 mask[i].Insert(reg2);
213 }
214 }
215 }
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