X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fir1-translators.lisp;h=d26e53a00ee0d4e1c359de9c9136b58fb70b97ea;hb=cb534036e501667da3b229627bf5169d7fb5a01c;hp=a1437e1c0f492357aae33f0e8d493b3a8e81f2a2;hpb=1840d888d2ef13fe0ea5aaa06f1fef3300da682b;p=sbcl.git diff --git a/src/compiler/ir1-translators.lisp b/src/compiler/ir1-translators.lisp index a1437e1..d26e53a 100644 --- a/src/compiler/ir1-translators.lisp +++ b/src/compiler/ir1-translators.lisp @@ -34,6 +34,8 @@ otherwise evaluate ELSE and return its values. ELSE defaults to NIL." (then-block (ctran-starts-block then-ctran)) (else-ctran (make-ctran)) (else-block (ctran-starts-block else-ctran)) + (maybe-instrument *instrument-if-for-code-coverage*) + (*instrument-if-for-code-coverage* t) (node (make-if :test pred-lvar :consequent then-block :alternative else-block))) @@ -50,8 +52,32 @@ otherwise evaluate ELSE and return its values. ELSE defaults to NIL." (link-blocks start-block then-block) (link-blocks start-block else-block)) - (ir1-convert then-ctran next result then) - (ir1-convert else-ctran next result else))) + (let ((path (best-sub-source-path test))) + (ir1-convert (if (and path maybe-instrument) + (let ((*current-path* path)) + (instrument-coverage then-ctran :then test)) + then-ctran) + next result then) + (ir1-convert (if (and path maybe-instrument) + (let ((*current-path* path)) + (instrument-coverage else-ctran :else test)) + else-ctran) + next result else)))) + +;;; To get even remotely sensible results for branch coverage +;;; tracking, we need good source paths. If the macroexpansions +;;; interfere enough the TEST of the conditional doesn't actually have +;;; an original source location (e.g. (UNLESS FOO ...) -> (IF (NOT +;;; FOO) ...). Look through the form, and try to find some subform +;;; that has one. +(defun best-sub-source-path (form) + (if (policy *lexenv* (= store-coverage-data 0)) + nil + (labels ((sub (form) + (or (get-source-path form) + (and (consp form) + (some #'sub form))))) + (or (sub form))))) ;;;; BLOCK and TAGBODY @@ -449,10 +475,11 @@ Return VALUE without evaluating it." (defun name-lambdalike (thing) (ecase (car thing) ((named-lambda) - (second thing)) + (or (second thing) + `(lambda ,(third thing)))) ((lambda instance-lambda) `(lambda ,(second thing))) - ((lambda-with-lexenv)' + ((lambda-with-lexenv) `(lambda ,(fifth thing))))) (defun fun-name-leaf (thing) @@ -549,7 +576,7 @@ be a lambda expression." ;;; directly to %FUNCALL, instead of waiting around for type ;;; inference. (define-source-transform funcall (function &rest args) - (if (and (consp function) (eq (car function) 'function)) + (if (and (consp function) (member (car function) '(function lambda))) `(%funcall ,function ,@args) (let ((name (constant-global-fun-name function))) (if name @@ -559,6 +586,11 @@ be a lambda expression." (deftransform %coerce-callable-to-fun ((thing) (function) *) "optimize away possible call to FDEFINITION at runtime" 'thing) + +(define-source-transform %coerce-callable-to-fun (thing) + (if (and (consp thing) (member (car thing) '(function lambda))) + thing + (values nil t))) ;;;; LET and LET* ;;;; @@ -674,7 +706,7 @@ form to reference any of the previous VARS." #!+sb-doc "LOCALLY declaration* form* -Sequentially evaluate the FORMS in a lexical environment where the the +Sequentially evaluate the FORMS in a lexical environment where the DECLARATIONS have effect. If LOCALLY is a top level form, then the FORMS are also processed as top level forms." (ir1-translate-locally body start next result)) @@ -828,26 +860,34 @@ other." ;;; Assert that FORM evaluates to the specified type (which may be a ;;; VALUES type). TYPE may be a type specifier or (as a hack) a CTYPE. -(def-ir1-translator the ((type value) start next result) - (the-in-policy type value (lexenv-policy *lexenv*) start next result)) +(def-ir1-translator the ((value-type form) start next result) + #!+sb-doc + "Specifies that the values returned by FORM conform to the VALUE-TYPE. + +CLHS specifies that the consequences are undefined if any result is +not of the declared type, but SBCL treats declarations as assertions +as long as SAFETY is at least 2, in which case incorrect type +information will result in a runtime type-error instead of leading to +eg. heap corruption. This is however expressly non-portable: use +CHECK-TYPE instead of THE to catch type-errors at runtime. THE is best +considered an optimization tool to inform the compiler about types it +is unable to derive from other declared types." + (the-in-policy value-type form (lexenv-policy *lexenv*) start next result)) ;;; This is like the THE special form, except that it believes ;;; whatever you tell it. It will never generate a type check, but ;;; will cause a warning if the compiler can prove the assertion is ;;; wrong. -(def-ir1-translator truly-the ((type value) start next result) +(def-ir1-translator truly-the ((value-type form) start next result) #!+sb-doc - "" - #-nil - (let ((type (coerce-to-values (compiler-values-specifier-type type))) - (old (when result (find-uses result)))) - (ir1-convert start next result value) - (when result - (do-uses (use result) - (unless (memq use old) - (derive-node-type use type))))) - #+nil - (the-in-policy type value '((type-check . 0)) start cont)) + "Specifies that the values returned by FORM conform to the +VALUE-TYPE, and causes the compiler to trust this information +unconditionally. + +Consequences are undefined if any result is not of the declared type +-- typical symptoms including memory corruptions. Use with great +care." + (the-in-policy value-type form '((type-check . 0)) start next result)) ;;;; SETQ @@ -860,8 +900,8 @@ other." (compiler-error "odd number of args to SETQ: ~S" source)) (if (= len 2) (let* ((name (first things)) - (leaf (or (lexenv-find name vars) - (find-free-var name)))) + (value-form (second things)) + (leaf (or (lexenv-find name vars) (find-free-var name)))) (etypecase leaf (leaf (when (constant-p leaf) @@ -876,7 +916,11 @@ other." (compiler-style-warn "~S is being set even though it was declared to be ignored." name))) - (setq-var start next result leaf (second things))) + (if (and (global-var-p leaf) (eq :global (global-var-kind leaf))) + ;; For undefined variables go through SET, so that we can catch + ;; constant modifications. + (ir1-convert start next result `(set ',name ,value-form)) + (setq-var start next result leaf value-form))) (cons (aver (eq (car leaf) 'macro)) ;; FIXME: [Free] type declaration. -- APD, 2002-01-26 @@ -1025,6 +1069,7 @@ due to normal completion or a non-local exit such as THROW)." (%unwind-protect (%escape-fun ,exit-tag) (%cleanup-fun ,cleanup-fun)) (return-from ,drop-thru-tag ,protected))) + (declare (optimize (insert-debug-catch 0))) (,cleanup-fun) (%continue-unwind ,next ,start ,count)))))))