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    Types: TextFile
    Names: »B«

└─⟦180fe333a⟧ Bits:30000405 8mm tape, Rational 1000, SW CATALOG, 10_20_0
└─⟦180fe333a⟧ Bits:30000537 8mm tape, Rational 1000, SW Catalog 10_20_0
    └─⟦5cb1d1d7f⟧ »DATA« 
        └─⟦3b1ee7bd8⟧ 
            └─⟦this⟧ 

TextFile

with Instrument;
use Instrument;
--PRAGMA PAGE; NOT IMPLEMENTED
----------------
-- GLOBAL REFERENCE
----------------

-- THIS TEST EVALUATES THE CODE EFFICIENCY OF REFERENCING A GLOBAL VARIA
-- I.E., A REFERENCE TO A VARIABLE THAT IS DECLARED IN THE OUTERMOST
-- DECLARATIVE REGION.

-- THE TEST VERSION INCLUDES THE DATA REFERENCE TO BE EVALUATED BY ASSIG
-- ING THE TEST GLOBAL VARIABLE, GLOBAL_OBJECT, TO THE SUPPORT GLOBAL
-- VARIABLE, GLOBAL (USED IN ALL PERFORMANCE TESTS).  PRIOR TO THIS
-- ASSIGNMENT, CAMOUFLAGED ASSIGNMENTS ARE MADE TO BOTH GLOBAL_OBJECT AN
-- TO GLOBAL.  THE SUPPORT GLOBAL VARIABLE IS USED IN A CONDITIONAL STAT
-- MENT TO GUARD THE TEST ASSIGNMENT FROM OPTIMIZATIONS.  BECAUSE OF THI
-- GUARD, THE TEST VARIABLE MUST BE UPDATED WITH ITS INITIAL VALUE SINCE
-- THE CONDITIONAL EXPRESSION MUST BE DYNAMICALLY EVALUATED.  ADDITIONAL
-- CAMOUFLAGED ASSIGNMENTS ARE MADE TO MAINTAIN THE VALIDITY OF THE
-- CONDITIONAL STATEMENT AND TO PREVENT ELIMINATION OF THE OTHERWISE
-- UNREFERENCED TEST GLOBAL VARIABLE IN THE NOISE VERSION.

-- THE NOISE VERSION IS IDENTICAL TO THE TEST VERSION EXCEPT THAT THE
-- REFERENCE TO THE TEST GLOBAL VARIABLE IS REMOVED SO THAT THE CODE EFF
-- METRICS FOR THE GLOBAL REFERENCE CAN BE DERIVED AS A PART OF THE ASSI
-- MENT.

procedure Gvrna2 is
    package Dr_Cs is new Procs (Integer);
    use Dr_Cs;

begin
    Start ("GVRNA2", "Global Var. Ref., Non-access type (test)");
    for I in 1 .. 100000 loop

        Let (Global_Object, Ident (Init));
        Let (Global, Ident (Init));

        if Global = Init then
            Global := Global_Object;  -- COMMENTED OUT IN NOISE VERSION
            Let (Global_Object, Ident (Init));
        end if;

        Let (Global, Ident (Global_Object));

    end loop;
    Stop;
end Gvrna2;