From: Nikodemus S. <de...@us...> - 2010-10-14 10:57:38
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Update of /cvsroot/sbcl/sbcl/tests In directory sfp-cvsdas-3.v30.ch3.sourceforge.com:/tmp/cvs-serv19244/tests Modified Files: compiler.pure.lisp Log Message: 1.0.43.53: less CPU-speed sensitive test for bug 654289 Instead of hardcoding a time limit, compile bits of code with different sized constants, and compare the times in relation to each other. Index: compiler.pure.lisp =================================================================== RCS file: /cvsroot/sbcl/sbcl/tests/compiler.pure.lisp,v retrieving revision 1.237 retrieving revision 1.238 diff -u -d -r1.237 -r1.238 --- compiler.pure.lisp 12 Oct 2010 05:10:07 -0000 1.237 +++ compiler.pure.lisp 14 Oct 2010 10:57:29 -0000 1.238 @@ -3575,21 +3575,24 @@ (load-time-value (the (values fixnum) 42))))))) (with-test (:name :bug-654289) - (let* ((big (labels ((make-tree (n acc) - (cond ((zerop n) acc) - (t (make-tree (1- n) (cons acc acc)))))) - (make-tree 10000 nil))) - (small '((1) (2) (3))) - (t0 (get-internal-run-time)) - (f1 (compile nil `(lambda (x) (eq x (quote ,big))))) - (t1 (get-internal-run-time)) - (f2 (compile nil `(lambda (x) (eq x (quote ,small))))) - (t2 (get-internal-run-time))) - (assert (funcall f1 big)) - (assert (funcall f2 small)) - ;; Compile time should not explode just because there's a big constant - ;; object in the source. - (assert (> 10 (abs (- (- t1 t0) (- t2 t1))))))) + ;; Test that compile-times don't explode when quoted constants + ;; get big. + (labels ((time-n (n) + (let* ((tree (make-tree (expt 10 n) nil)) + (t0 (get-internal-run-time)) + (f (compile nil `(lambda (x) (eq x (quote ,tree))))) + (t1 (get-internal-run-time))) + (assert (funcall f tree)) + (- t1 t0))) + (make-tree (n acc) + (cond ((zerop n) acc) + (t (make-tree (1- n) (cons acc acc)))))) + (let* ((times (loop for i from 0 upto 4 + collect (time-n i))) + (max-small (reduce #'max times :end 3)) + (max-big (reduce #'max times :start 3))) + ;; This way is hopefully fairly CPU-performance insensitive. + (assert (> (* (+ 2 max-small) 2) max-big))))) (with-test (:name :bug-309063) (let ((fun (compile nil `(lambda (x) |