14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.lir.alloc;
  24 
  25 import java.util.ArrayList;
  26 
  27 import org.graalvm.compiler.core.common.LIRKind;
  28 import org.graalvm.compiler.core.common.cfg.AbstractBlockBase;
  29 import org.graalvm.compiler.lir.LIR;
  30 import org.graalvm.compiler.lir.LIRInsertionBuffer;
  31 import org.graalvm.compiler.lir.LIRInstruction;
  32 import org.graalvm.compiler.lir.StandardOp;
  33 import org.graalvm.compiler.lir.Variable;
  34 import org.graalvm.compiler.lir.framemap.FrameMapBuilder;
  35 import org.graalvm.compiler.lir.gen.LIRGenerationResult;
  36 import org.graalvm.compiler.lir.gen.LIRGeneratorTool;
  37 import org.graalvm.compiler.lir.phases.PreAllocationOptimizationPhase;
  38 import org.graalvm.compiler.lir.util.RegisterMap;
  39 
  40 import jdk.vm.ci.code.Architecture;
  41 import jdk.vm.ci.code.Register;
  42 import jdk.vm.ci.code.RegisterArray;
  43 import jdk.vm.ci.code.RegisterValue;
  44 import jdk.vm.ci.code.TargetDescription;
  45 import jdk.vm.ci.meta.PlatformKind;
  46 
  47 public class SaveCalleeSaveRegisters extends PreAllocationOptimizationPhase {
  48 
  49     @Override
  50     protected void run(TargetDescription target, LIRGenerationResult lirGenRes, PreAllocationOptimizationContext context) {
  51         FrameMapBuilder frameMapBuilder = lirGenRes.getFrameMapBuilder();
  52         RegisterArray calleeSaveRegisters = frameMapBuilder.getCodeCache().getRegisterConfig().getCalleeSaveRegisters();
  53         if (calleeSaveRegisters == null || calleeSaveRegisters.size() == 0) {
  54             return;
  55         }
  56         LIR lir = lirGenRes.getLIR();
  57         RegisterMap<Variable> savedRegisters = saveAtEntry(lir, context.lirGen, lirGenRes, calleeSaveRegisters, target.arch);
  58 
  59         for (AbstractBlockBase<?> block : lir.codeEmittingOrder()) {
  60             if (block == null) {
  61                 continue;
  62             }
  63             if (block.getSuccessorCount() == 0) {
  64                 restoreAtExit(lir, context.lirGen.getSpillMoveFactory(), lirGenRes, savedRegisters, block);
  65             }
  66         }
  67     }
  68 
  69     private static RegisterMap<Variable> saveAtEntry(LIR lir, LIRGeneratorTool lirGen, LIRGenerationResult lirGenRes, RegisterArray calleeSaveRegisters, Architecture arch) {
  70         AbstractBlockBase<?> startBlock = lir.getControlFlowGraph().getStartBlock();
  71         ArrayList<LIRInstruction> instructions = lir.getLIRforBlock(startBlock);
  72         int insertionIndex = 1;

  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.lir.alloc;
  24 
  25 import java.util.ArrayList;
  26 
  27 import org.graalvm.compiler.core.common.LIRKind;
  28 import org.graalvm.compiler.core.common.cfg.AbstractBlockBase;
  29 import org.graalvm.compiler.lir.LIR;
  30 import org.graalvm.compiler.lir.LIRInsertionBuffer;
  31 import org.graalvm.compiler.lir.LIRInstruction;
  32 import org.graalvm.compiler.lir.StandardOp;
  33 import org.graalvm.compiler.lir.Variable;

  34 import org.graalvm.compiler.lir.gen.LIRGenerationResult;
  35 import org.graalvm.compiler.lir.gen.LIRGeneratorTool;
  36 import org.graalvm.compiler.lir.phases.PreAllocationOptimizationPhase;
  37 import org.graalvm.compiler.lir.util.RegisterMap;
  38 
  39 import jdk.vm.ci.code.Architecture;
  40 import jdk.vm.ci.code.Register;
  41 import jdk.vm.ci.code.RegisterArray;
  42 import jdk.vm.ci.code.RegisterValue;
  43 import jdk.vm.ci.code.TargetDescription;
  44 import jdk.vm.ci.meta.PlatformKind;
  45 
  46 public class SaveCalleeSaveRegisters extends PreAllocationOptimizationPhase {
  47 
  48     @Override
  49     protected void run(TargetDescription target, LIRGenerationResult lirGenRes, PreAllocationOptimizationContext context) {
  50         RegisterArray calleeSaveRegisters = lirGenRes.getRegisterConfig().getCalleeSaveRegisters();

  51         if (calleeSaveRegisters == null || calleeSaveRegisters.size() == 0) {
  52             return;
  53         }
  54         LIR lir = lirGenRes.getLIR();
  55         RegisterMap<Variable> savedRegisters = saveAtEntry(lir, context.lirGen, lirGenRes, calleeSaveRegisters, target.arch);
  56 
  57         for (AbstractBlockBase<?> block : lir.codeEmittingOrder()) {
  58             if (block == null) {
  59                 continue;
  60             }
  61             if (block.getSuccessorCount() == 0) {
  62                 restoreAtExit(lir, context.lirGen.getSpillMoveFactory(), lirGenRes, savedRegisters, block);
  63             }
  64         }
  65     }
  66 
  67     private static RegisterMap<Variable> saveAtEntry(LIR lir, LIRGeneratorTool lirGen, LIRGenerationResult lirGenRes, RegisterArray calleeSaveRegisters, Architecture arch) {
  68         AbstractBlockBase<?> startBlock = lir.getControlFlowGraph().getStartBlock();
  69         ArrayList<LIRInstruction> instructions = lir.getLIRforBlock(startBlock);
  70         int insertionIndex = 1;