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• Compilation-database

Comp-db-keep-only-preprocessor-args

Filter out compilation-database arguments which are disruptive or irrelevant to preprocessing.

Signature

(comp-db-keep-only-preprocessor-args db) → db$

Arguments

db — Guard (comp-dbp db).

Returns

db$ — Type (comp-dbp db$).

Generally, it seems easier to blacklist arguments which are disruptive to preprocessing than it is to whitelist the preprocessing-relevant arguments. Most flags do not prevent us from preprocessing, and some are surprisingly relevant to preprocessing (fir instance, the -fPIE flag indicates a code-generation strategy, but it also causes two macros to be defined: __pie__ and __PIE__).

Definitions and Theorems

Function: comp-db-keep-only-preprocessor-args

(defun comp-db-keep-only-preprocessor-args (db)
  (declare (xargs :guard (comp-dbp db)))
  (b* ((db (comp-db-fix db))
       ((when (endp db)) nil)
       (file (car (first db)))
       (entry (cdr (first db)))
       (arguments (comp-db-arguments-keep-only-preprocessor-args
                       (comp-db-entry->arguments entry)))
       (entry (change-comp-db-entry entry
                                    :arguments arguments)))
    (acons file entry
           (comp-db-keep-only-preprocessor-args (rest db)))))

Theorem: comp-dbp-of-comp-db-keep-only-preprocessor-args

(defthm comp-dbp-of-comp-db-keep-only-preprocessor-args
  (b* ((db$ (comp-db-keep-only-preprocessor-args db)))
    (comp-dbp db$))
  :rule-classes :rewrite)

Theorem: comp-db-keep-only-preprocessor-args-of-comp-db-fix-db

(defthm comp-db-keep-only-preprocessor-args-of-comp-db-fix-db
  (equal (comp-db-keep-only-preprocessor-args (comp-db-fix db))
         (comp-db-keep-only-preprocessor-args db)))

Theorem: comp-db-keep-only-preprocessor-args-comp-db-equiv-congruence-on-db

(defthm
 comp-db-keep-only-preprocessor-args-comp-db-equiv-congruence-on-db
 (implies (comp-db-equiv db db-equiv)
          (equal (comp-db-keep-only-preprocessor-args db)
                 (comp-db-keep-only-preprocessor-args db-equiv)))
 :rule-classes :congruence)