test/hotspot/jtreg/runtime/verifier/popTopTests/popDupSwapTests.jasm

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// Test that VerifyError is thrown if dup2_x1 tries to replace the filler slot
// of a category 2 value.
// The stack map is long,top,null,null.  The verifier should reject dup2_x1's
// (form1) attempt to turn the stack map into long,top,null,null,null,null
public class dup2_x1 version 51:0 {
    public static Method run:"()V" stack 6 locals 0 {
        lconst_0;
        aconst_null;
        aconst_null;
        dup2_x1;
        return;
    }
}


public class dup2_x2 version 51:0 {
    public static Method run:"()V" stack 6 locals 0 {
        iconst_0;
        lconst_0;
        aconst_null;

        stack_frame_type full;
        stack_map int, bogus, bogus, null;
        locals_map;

        dup2_x2;
        return;
    }
}


// Test that VerifyError is thrown if dup2_x2 tries to replace the filler slot
// of a category 2 value.
// The stack map is long,top,null,null,null.  The verifier should reject dup2_x2's
// (form 1) attempt to turn the stack map into long,top,null,null,null,top,null.
public class dup2_x2_long_refs version 51:0 {
    public static Method run:"()V" stack 6 locals 0 {
        lconst_0;
        aconst_null;
        aconst_null;
        aconst_null;
        dup2_x2;
        return;
    }
}


// Test that VerifyError is thrown when dup2 is used to remove the upper
// half of a category 2 type.
public class dup2longtop version 51:0 {
    public static Method main:"([Ljava/lang/String;)V" stack 5 locals 1 {
        lconst_0;
        iconst_0;
        dup2;
        return;
    }
}


// Test that VerifyError is thrown when dup2 is used to remove top
// because top may be the upper half of a category 2 type.
public class dup2toptop version 51:0 {
    public static Method main:"([Ljava/lang/String;)V" stack 5 locals 1 {
        // here we have {long, top, null}
        // EXECUTION: we have {long, null}
        lconst_0;
        aconst_null;

        stack_frame_type full;
        stack_map bogus, bogus, null;
        locals_map bogus;

        // VERIFIER: use form1 of dup2 - {top, top, null} -> {top, top, null, top, null}
        // EXECUTION: have {long, null} - no applicable form of dup2 for such type state by JVMS ch. 6
        dup2;

        return;
    }
}


// Test that VerifyError is thrown if dup_x1 tries to replace the filler slot
// of a category 2 value.
public class dup_x1 version 51:0 {
    public static Method run:"()V" stack 6 locals 0 {
        lconst_0;
        aconst_null;
        dup_x1;
        return;
    }
}


// Test that VerifyError is thrown when pop2 is used to remove top
// because top may be the upper half of a category 2 type.
public class pop2longtop version 51:0
{

    public Method regular:"()V" stack 6 locals 6
    {
        lconst_0;
        iconst_0;
        stack_frame_type full;
        stack_map long, bogus;
        locals_map;
        pop2;
        return;
    }
} // end Class pop2longtop



// Test that VerifyError is thrown when pop2 is used to remove top, top
// because either top may be the upper half of a category 2 type.
public class pop2toptop version 51:0
{

    public Method regular:"()V" stack 6 locals 6
    {
        iconst_0;
        iconst_0;
        stack_frame_type full;
        stack_map bogus, bogus;
        locals_map;
        pop2;
        return;
    }
} // end Class pop2toptop



// Test that VerifyError is thrown when pop is used to remove top
// because top may be the upper half of a category 2 type.
public class poptop version 51:0
{

    public Method regular:"()V" stack 2 locals 1
    {
        iconst_0;
        stack_frame_type full;
        stack_map bogus;
        pop;
        return;
    }
} // end Class poptop



// Test that VerifyError is thrown when pop is used to remove top, top
// because either top may be the upper half of a category 2 type.
public class poptoptop version 51:0
{

    public Method regular:"()V" stack 2 locals 1
    {
        iconst_0;
        iconst_0;
        stack_frame_type full;
        stack_map bogus, bogus;
        pop;
        return;
    }
} // end Class poptoptop



// Test that VerifyError is thrown when swap is used to swap int, top
// because top may be the lower half of a category 2 type.
public class swapinttop version 51:0
{

    public Method regular:"()V" stack 6 locals 6
    {
        iconst_0;
        iconst_0;
        stack_frame_type full;
        stack_map int, bogus;
        locals_map;
        swap;
        return;
    }
} // end Class swapinttop



// Test that VerifyError is thrown when swap is used to swap top, int
// because top may be the upper half of a category 2 type.
public class swaptopint version 51:0
{

    public Method regular:"()V" stack 6 locals 6
    {
        iconst_0;
        iconst_0;
        stack_frame_type full;
        stack_map bogus, int;
        locals_map;
        swap;
        return;
    }
} // end Class swaptopint



// Test that VerifyError is thrown when swap is used to swap top, top
// because either top may be the upper half of a category 2 type.
public class swaptoptop version 51:0
{

    public Method regular:"()V" stack 6 locals 6
    {
        iconst_0;
        iconst_0;
        stack_frame_type full;
        stack_map bogus, bogus;
        locals_map;
        swap;
        return;
    }
} // end Class swaptoptop