1 | include "joint/Joint.ma". |
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2 | |
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3 | definition fresh_reg: |
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4 | ∀pars0,globals. joint_internal_function … (rtl_ertl_params pars0 globals) → (joint_internal_function … (rtl_ertl_params pars0 globals)) × register ≝ |
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5 | λpars0,globals,def. |
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6 | let 〈r,runiverse〉 ≝ fresh … (joint_if_runiverse … def) in |
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7 | 〈set_locals ?? (set_runiverse ?? def runiverse) (r::joint_if_locals ?? def), r〉. |
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8 | |
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9 | let rec fresh_regs (pars0:?) (globals: list ident) (def: joint_internal_function … (rtl_ertl_params pars0 globals)) (n: nat) on n ≝ |
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10 | match n with |
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11 | [ O ⇒ 〈def, [ ]〉 |
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12 | | S n' ⇒ |
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13 | let 〈def', regs'〉 ≝ fresh_regs pars0 globals def n' in |
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14 | let 〈def', reg〉 ≝ fresh_reg … def' in |
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15 | 〈def', reg :: regs'〉 |
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16 | ]. |
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17 | |
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18 | lemma fresh_regs_length: |
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19 | ∀pars0,globals.∀def: joint_internal_function … (rtl_ertl_params pars0 globals). ∀n: nat. |
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20 | |(\snd (fresh_regs … def n))| = n. |
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21 | #pars0 #globals #def #n elim n |
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22 | [ % |
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23 | | #m whd in ⊢ (? → ??(??(???%))?); @pair_elim |
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24 | #def' #regs #EQ >EQ cases (fresh_reg ???) normalize // ] |
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25 | qed. |
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26 | |
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27 | definition fresh_regs_strong: |
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28 | ∀pars0,globals. joint_internal_function … (rtl_ertl_params pars0 globals) → |
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29 | ∀n: nat. Σregs: (joint_internal_function … (rtl_ertl_params pars0 globals)) × (list register). |\snd regs| = n ≝ |
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30 | λpars0,globals,def,n.fresh_regs pars0 globals def n. // |
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31 | qed. |
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32 | |
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33 | definition fresh_label: |
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34 | ∀pars0,globals. joint_internal_function … (graph_params pars0 globals) → label × (joint_internal_function … (graph_params pars0 globals)) ≝ |
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35 | λpars0,globals,def. |
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36 | let 〈r,luniverse〉 ≝ fresh … (joint_if_luniverse … def) in |
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37 | 〈r,set_luniverse … def luniverse〉. |
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38 | |
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39 | let rec add_translates |
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40 | (pars1: params1) (globals: list ident) |
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41 | (translate_list: list ?) (start_lbl: label) (dest_lbl: label) |
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42 | (def: joint_internal_function … (graph_params pars1 globals)) |
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43 | on translate_list ≝ |
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44 | match translate_list with |
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45 | [ nil ⇒ add_graph … start_lbl (GOTO … dest_lbl) def |
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46 | | cons trans translate_list ⇒ |
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47 | match translate_list with |
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48 | [ nil ⇒ trans start_lbl dest_lbl def |
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49 | | _ ⇒ |
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50 | let 〈tmp_lbl, def〉 ≝ fresh_label … def in |
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51 | let def ≝ trans start_lbl tmp_lbl def in |
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52 | add_translates pars1 globals translate_list tmp_lbl dest_lbl def]]. |
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53 | |
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54 | definition adds_graph ≝ |
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55 | λpars1:params1.λglobals. λstmt_list: list (label → joint_statement (graph_params_ pars1) globals). |
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56 | add_translates … (map ?? (λf,start_lbl,dest_lbl. add_graph pars1 ? start_lbl (f dest_lbl)) stmt_list). |
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