public final class org.graalvm.compiler.lir.NullCheckOptimizer extends org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.graalvm.compiler.lir.NullCheckOptimizer
  super_class: org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.compiler.lir.NullCheckOptimizer this
         0: .line 35
            aload 0 /* this */
            invokespecial org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase.<init>:()V
            return
        end local 0 // org.graalvm.compiler.lir.NullCheckOptimizer this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/compiler/lir/NullCheckOptimizer;

  protected void run(jdk.vm.ci.code.TargetDescription, org.graalvm.compiler.lir.gen.LIRGenerationResult, org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext);
    descriptor: (Ljdk/vm/ci/code/TargetDescription;Lorg/graalvm/compiler/lir/gen/LIRGenerationResult;Lorg/graalvm/compiler/lir/phases/PostAllocationOptimizationPhase$PostAllocationOptimizationContext;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=6, args_size=4
        start local 0 // org.graalvm.compiler.lir.NullCheckOptimizer this
        start local 1 // jdk.vm.ci.code.TargetDescription target
        start local 2 // org.graalvm.compiler.lir.gen.LIRGenerationResult lirGenRes
        start local 3 // org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext context
         0: .line 39
            aload 2 /* lirGenRes */
            invokevirtual org.graalvm.compiler.lir.gen.LIRGenerationResult.getLIR:()Lorg/graalvm/compiler/lir/LIR;
            astore 4 /* ir */
        start local 4 // org.graalvm.compiler.lir.LIR ir
         1: .line 40
            aload 4 /* ir */
            invokevirtual org.graalvm.compiler.lir.LIR.codeEmittingOrder:()[Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase;
            astore 5 /* blocks */
        start local 5 // org.graalvm.compiler.core.common.cfg.AbstractBlockBase[] blocks
         2: .line 41
            aload 4 /* ir */
            aload 5 /* blocks */
            aload 1 /* target */
            getfield jdk.vm.ci.code.TargetDescription.implicitNullCheckLimit:I
            invokestatic org.graalvm.compiler.lir.NullCheckOptimizer.foldNullChecks:(Lorg/graalvm/compiler/lir/LIR;[Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase;I)V
         3: .line 42
            return
        end local 5 // org.graalvm.compiler.core.common.cfg.AbstractBlockBase[] blocks
        end local 4 // org.graalvm.compiler.lir.LIR ir
        end local 3 // org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext context
        end local 2 // org.graalvm.compiler.lir.gen.LIRGenerationResult lirGenRes
        end local 1 // jdk.vm.ci.code.TargetDescription target
        end local 0 // org.graalvm.compiler.lir.NullCheckOptimizer this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    4     0       this  Lorg/graalvm/compiler/lir/NullCheckOptimizer;
            0    4     1     target  Ljdk/vm/ci/code/TargetDescription;
            0    4     2  lirGenRes  Lorg/graalvm/compiler/lir/gen/LIRGenerationResult;
            0    4     3    context  Lorg/graalvm/compiler/lir/phases/PostAllocationOptimizationPhase$PostAllocationOptimizationContext;
            1    4     4         ir  Lorg/graalvm/compiler/lir/LIR;
            2    4     5     blocks  [Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase;
    MethodParameters:
           Name  Flags
      target     
      lirGenRes  
      context    

  private static void foldNullChecks(org.graalvm.compiler.lir.LIR, org.graalvm.compiler.core.common.cfg.AbstractBlockBase<?>[], );
    descriptor: (Lorg/graalvm/compiler/lir/LIR;[Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase;I)V
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=13, args_size=3
        start local 0 // org.graalvm.compiler.lir.LIR ir
        start local 1 // org.graalvm.compiler.core.common.cfg.AbstractBlockBase[] blocks
        start local 2 // int implicitNullCheckLimit
         0: .line 45
            aload 1 /* blocks */
            dup
            astore 6
            arraylength
            istore 5
            iconst_0
            istore 4
            goto 21
      StackMap locals: org.graalvm.compiler.lir.LIR org.graalvm.compiler.core.common.cfg.AbstractBlockBase[] int top int int org.graalvm.compiler.core.common.cfg.AbstractBlockBase[]
      StackMap stack:
         1: aload 6
            iload 4
            aaload
            astore 3 /* block */
        start local 3 // org.graalvm.compiler.core.common.cfg.AbstractBlockBase block
         2: .line 46
            aload 3 /* block */
            ifnonnull 4
         3: .line 47
            goto 20
         4: .line 49
      StackMap locals: org.graalvm.compiler.lir.LIR org.graalvm.compiler.core.common.cfg.AbstractBlockBase[] int org.graalvm.compiler.core.common.cfg.AbstractBlockBase int int org.graalvm.compiler.core.common.cfg.AbstractBlockBase[]
      StackMap stack:
            aload 0 /* ir */
            aload 3 /* block */
            invokevirtual org.graalvm.compiler.lir.LIR.getLIRforBlock:(Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase;)Ljava/util/ArrayList;
            astore 7 /* list */
        start local 7 // java.util.ArrayList list
         5: .line 51
            aload 7 /* list */
            invokevirtual java.util.ArrayList.isEmpty:()Z
            ifne 20
         6: .line 53
            aload 7 /* list */
            iconst_0
            invokevirtual java.util.ArrayList.get:(I)Ljava/lang/Object;
            checkcast org.graalvm.compiler.lir.LIRInstruction
            astore 8 /* lastInstruction */
        start local 8 // org.graalvm.compiler.lir.LIRInstruction lastInstruction
         7: .line 54
            iconst_0
            istore 9 /* i */
        start local 9 // int i
         8: goto 19
         9: .line 55
      StackMap locals: java.util.ArrayList org.graalvm.compiler.lir.LIRInstruction int
      StackMap stack:
            aload 7 /* list */
            iload 9 /* i */
            invokevirtual java.util.ArrayList.get:(I)Ljava/lang/Object;
            checkcast org.graalvm.compiler.lir.LIRInstruction
            astore 10 /* instruction */
        start local 10 // org.graalvm.compiler.lir.LIRInstruction instruction
        10: .line 57
            aload 10 /* instruction */
            instanceof org.graalvm.compiler.lir.StandardOp$ImplicitNullCheck
            ifeq 17
            aload 8 /* lastInstruction */
            instanceof org.graalvm.compiler.lir.StandardOp$NullCheck
            ifeq 17
        11: .line 58
            aload 8 /* lastInstruction */
            checkcast org.graalvm.compiler.lir.StandardOp$NullCheck
            astore 11 /* nullCheck */
        start local 11 // org.graalvm.compiler.lir.StandardOp$NullCheck nullCheck
        12: .line 59
            aload 10 /* instruction */
            checkcast org.graalvm.compiler.lir.StandardOp$ImplicitNullCheck
            astore 12 /* implicitNullCheck */
        start local 12 // org.graalvm.compiler.lir.StandardOp$ImplicitNullCheck implicitNullCheck
        13: .line 60
            aload 12 /* implicitNullCheck */
            aload 11 /* nullCheck */
            invokeinterface org.graalvm.compiler.lir.StandardOp$NullCheck.getCheckedValue:()Ljdk/vm/ci/meta/Value;
            aload 11 /* nullCheck */
            invokeinterface org.graalvm.compiler.lir.StandardOp$NullCheck.getState:()Lorg/graalvm/compiler/lir/LIRFrameState;
            iload 2 /* implicitNullCheckLimit */
            invokeinterface org.graalvm.compiler.lir.StandardOp$ImplicitNullCheck.makeNullCheckFor:(Ljdk/vm/ci/meta/Value;Lorg/graalvm/compiler/lir/LIRFrameState;I)Z
            ifeq 17
        14: .line 61
            aload 7 /* list */
            iload 9 /* i */
            iconst_1
            isub
            invokevirtual java.util.ArrayList.remove:(I)Ljava/lang/Object;
            pop
        15: .line 62
            iload 9 /* i */
            aload 7 /* list */
            invokevirtual java.util.ArrayList.size:()I
            if_icmpge 17
        16: .line 63
            aload 7 /* list */
            iload 9 /* i */
            invokevirtual java.util.ArrayList.get:(I)Ljava/lang/Object;
            checkcast org.graalvm.compiler.lir.LIRInstruction
            astore 10 /* instruction */
        end local 12 // org.graalvm.compiler.lir.StandardOp$ImplicitNullCheck implicitNullCheck
        end local 11 // org.graalvm.compiler.lir.StandardOp$NullCheck nullCheck
        17: .line 67
      StackMap locals: org.graalvm.compiler.lir.LIRInstruction
      StackMap stack:
            aload 10 /* instruction */
            astore 8 /* lastInstruction */
        end local 10 // org.graalvm.compiler.lir.LIRInstruction instruction
        18: .line 54
            iinc 9 /* i */ 1
      StackMap locals:
      StackMap stack:
        19: iload 9 /* i */
            aload 7 /* list */
            invokevirtual java.util.ArrayList.size:()I
            if_icmplt 9
        end local 9 // int i
        end local 8 // org.graalvm.compiler.lir.LIRInstruction lastInstruction
        end local 7 // java.util.ArrayList list
        end local 3 // org.graalvm.compiler.core.common.cfg.AbstractBlockBase block
        20: .line 45
      StackMap locals: org.graalvm.compiler.lir.LIR org.graalvm.compiler.core.common.cfg.AbstractBlockBase[] int top int int org.graalvm.compiler.core.common.cfg.AbstractBlockBase[]
      StackMap stack:
            iinc 4 1
      StackMap locals:
      StackMap stack:
        21: iload 4
            iload 5
            if_icmplt 1
        22: .line 71
            return
        end local 2 // int implicitNullCheckLimit
        end local 1 // org.graalvm.compiler.core.common.cfg.AbstractBlockBase[] blocks
        end local 0 // org.graalvm.compiler.lir.LIR ir
      LocalVariableTable:
        Start  End  Slot                    Name  Signature
            0   23     0                      ir  Lorg/graalvm/compiler/lir/LIR;
            0   23     1                  blocks  [Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase;
            0   23     2  implicitNullCheckLimit  I
            2   20     3                   block  Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase<*>;
            5   20     7                    list  Ljava/util/ArrayList<Lorg/graalvm/compiler/lir/LIRInstruction;>;
            7   20     8         lastInstruction  Lorg/graalvm/compiler/lir/LIRInstruction;
            8   20     9                       i  I
           10   18    10             instruction  Lorg/graalvm/compiler/lir/LIRInstruction;
           12   17    11               nullCheck  Lorg/graalvm/compiler/lir/StandardOp$NullCheck;
           13   17    12       implicitNullCheck  Lorg/graalvm/compiler/lir/StandardOp$ImplicitNullCheck;
    Signature: (Lorg/graalvm/compiler/lir/LIR;[Lorg/graalvm/compiler/core/common/cfg/AbstractBlockBase<*>;I)V
    MethodParameters:
                        Name  Flags
      ir                      
      blocks                  
      implicitNullCheckLimit  

  protected void run(jdk.vm.ci.code.TargetDescription, org.graalvm.compiler.lir.gen.LIRGenerationResult, java.lang.Object);
    descriptor: (Ljdk/vm/ci/code/TargetDescription;Lorg/graalvm/compiler/lir/gen/LIRGenerationResult;Ljava/lang/Object;)V
    flags: (0x1044) ACC_PROTECTED, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=4, locals=4, args_size=4
         0: .line 1
            aload 0
            aload 1
            aload 2
            aload 3
            checkcast org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext
            invokevirtual org.graalvm.compiler.lir.NullCheckOptimizer.run:(Ljdk/vm/ci/code/TargetDescription;Lorg/graalvm/compiler/lir/gen/LIRGenerationResult;Lorg/graalvm/compiler/lir/phases/PostAllocationOptimizationPhase$PostAllocationOptimizationContext;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "NullCheckOptimizer.java"
InnerClasses:
  public abstract ImplicitNullCheck = org.graalvm.compiler.lir.StandardOp$ImplicitNullCheck of org.graalvm.compiler.lir.StandardOp
  public abstract NullCheck = org.graalvm.compiler.lir.StandardOp$NullCheck of org.graalvm.compiler.lir.StandardOp
  public final PostAllocationOptimizationContext = org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase$PostAllocationOptimizationContext of org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase