| 1 | <!-- Figure: a list of declarations followed by blocs. Another possibility:
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| 2 | blocs and declarations are arbitrarily mixed.
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| 3 | NB: I don't like the name Figure -->
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| 4 |
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| 5 |
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| 6 | <!ELEMENT figure ((constant | variable | argument)*, (bloc)*) >
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| 7 | <!ATTLIST figure name ID #REQUIRED>
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| 8 |
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| 9 | <!ELEMENT variable (identifier, (signed | unsigned | fixpoint |
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| 10 | float | pointer | array | record))>
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| 11 |
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| 12 | <!ELEMENT constant (identifier, (signed | unsigned | fixpoint | float))>
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| 13 | <!ATTLIST constant value CDATA #IMPLIED>
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| 14 |
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| 15 | <!ELEMENT argument (identifier, (signed | unsigned | fixpoint |
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| 16 | float | pointer | array | record))>
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| 17 | <!ATTLIST argument dir CDATA #REQUIRED>
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| 18 | <!-- Allowed values: in, out, inout>
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| 19 |
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| 20 | <!-- Identifier -->
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| 21 |
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| 22 | <!ELEMENT identifier (#PCDATA)>
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| 23 |
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| 24 |
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| 25 | <!-- Types -->
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| 26 |
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| 27 | <!ELEMENT signed EMPTY>
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| 28 | <!ATTLIST signed size CDATA #IMPLIED>
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| 29 |
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| 30 | <!ELEMENT unsigned EMPTY>
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| 31 | <!ATTLIST unsigned size CDATA #IMPLIED>
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| 32 |
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| 33 | <!ELEMENT fixpoint EMPTY>
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| 34 | <!ATTLIST fixpoint size CDATA #IMPLIED>
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| 35 | <!ATTLIST fixpoint precision CDATA #IMPLIED>
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| 36 | <!ATTLIST fixpoint rounding CDATA #IMPLIED>
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| 37 |
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| 38 | <!ELEMENT float EMPTY>
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| 39 | <!ATTLIST float exponent CDATA #IMPLIED>
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| 40 | <!ATTLIST float mantissa CDATA #IMPLIED>
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| 41 |
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| 42 |
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| 43 | <!ELEMENT pointer (signed | unsigned | fixpoint | float
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| 44 | | pointer | array | record)>
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| 45 |
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| 46 | <!-- All arrays are one dimensional. Many-dimensional arrays are
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| 47 | arrays of arrays of .... -->
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| 48 |
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| 49 | <!ELEMENT array ((signed | unsigned | fixpoint | float
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| 50 | | pointer | array | record), expression?)>
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| 51 |
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| 52 | <!ELEMENT record (variable *)>
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| 53 | <!ATTLIST record label ID #REQUIRED>
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| 54 |
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| 55 |
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| 56 | <!-- Expressions -->
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| 57 |
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| 58 | <!ELEMENT expression (identifier | (operator, expression*) | call)>
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| 59 |
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| 60 | <!ELEMENT operator (#PCDATA)>
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| 61 |
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| 62 | <!-- Needs a list of gcc allowed values:
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| 63 | - ordinary arithmetics, boolean and bitwise operators
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| 64 |
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| 65 | - are combined assignment operators (+=, ++, etc.) resolved by gcc?
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| 66 |
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| 67 | - are multiple assigments (as in x = a[i=j];) resolved by gcc?
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| 68 |
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| 69 | - is the comma (as in for(i=0, j=1; ...)) resolved by gcc?
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| 70 |
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| 71 | - dereferencing operators
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| 72 | - subscripting operators
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| 73 | - casts (?)
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| 74 | - sizeof (?)
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| 75 | -->
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| 76 |
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| 77 |
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| 78 | <!-- Elementary statements -->
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| 79 |
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| 80 |
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| 81 | <!ELEMENT statement (expression | call)>
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| 82 | <!ATTLIST statement label ID #REQUIRED>
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| 83 |
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| 84 | <!ELEMENT call (identifier, expression*)>
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| 85 |
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| 86 |
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| 87 | <!-- Hierarchical CDFG -->
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| 88 |
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| 89 | <!ELEMENT basicBloc (statement*, (outEdge)*, liveIn, liveOut)>
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| 90 | <!ATTLIST basicBloc label ID #REQUIRED>
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| 91 |
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| 92 | <!-- More hierarchy: replace statement* by (statement | bloc)* -->
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| 93 |
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| 94 |
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| 95 | <!ELEMENT loop (iterator, bloc, (outEdge)*, liveIn, liveOut)>
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| 96 | <!ATTLIST loop label ID #REQUIRED>
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| 97 |
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| 98 | <!-- Question: can a bloc have local declarations?
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| 99 | If so, a bloc is a figure !!! -->
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| 100 |
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| 101 | <!ELEMENT bloc (loop | basicBloc)*>
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| 102 | <!ATTLIST bloc label ID #REQUIRED>
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| 103 |
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| 104 | <!ELEMENT outEdge (expression)>
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| 105 | <!ATTLIST target IDREF #REQUIRED>
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| 106 |
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| 107 | <!-- Question: is this enough for handling
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| 108 | break, continue and goto statements? -->
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| 109 |
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| 110 |
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| 111 | <!ELEMENT liveIn (identifier)*>
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| 112 | <!ELEMENT liveOut (identifier)*>
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| 113 |
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| 114 | <!-- Iterators: to be defined more precisely -->
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| 115 |
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| 116 | <!ELEMENT iterator (for | while | do)>
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| 117 |
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| 118 |
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| 119 | <!-- Question: what is the gcc translation of
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| 120 | while((p = ...) != 0) ...;
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| 121 | or of
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| 122 | while(i++, j>=0){...
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| 123 | -->
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