tests/compiler-test-util.lisp

   1 ;;;; Utilities for verifying features of compiled code
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (defpackage :compiler-test-util
  15   (:nicknames :ctu)
  16   (:use :cl :sb-c :sb-kernel)
  17   (:export #:assert-consing
  18            #:assert-no-consing
  19            #:compiler-derived-type
  20            #:find-value-cell-values
  21            #:find-code-constants
  22            #:find-named-callees))
  23
  24 (cl:in-package :ctu)
  25
  26 (unless (fboundp 'compiler-derived-type)
  27   (defknown compiler-derived-type (t) (values t t) (movable flushable unsafe))
  28   (deftransform compiler-derived-type ((x) * * :node node)
  29     (sb-c::delay-ir1-transform node :optimize)
  30     `(values ',(type-specifier (sb-c::lvar-type x)) t))
  31   (defun compiler-derived-type (x)
  32     (declare (ignore x))
  33     (values t nil)))
  34
  35 (defun find-value-cell-values (fun)
  36   (let ((code (fun-code-header (%fun-fun fun))))
  37     (loop for i from sb-vm::code-constants-offset below (get-header-data code)
  38           for c = (code-header-ref code i)
  39           when (= sb-vm::value-cell-header-widetag (widetag-of c))
  40           collect (sb-vm::value-cell-ref c))))
  41
  42 (defun find-named-callees (fun &key (type t) (name nil namep))
  43   (let ((code (sb-kernel:fun-code-header (sb-kernel:%fun-fun fun))))
  44     (loop for i from sb-vm::code-constants-offset below (sb-kernel:get-header-data code)
  45           for c = (sb-kernel:code-header-ref code i)
  46           when (and (typep c 'sb-impl::fdefn)
  47                     (let ((fun (sb-impl::fdefn-fun c)))
  48                       (and (typep fun type)
  49                            (or (not namep)
  50                                (equal name (sb-impl::fdefn-name c))))))
  51           collect (sb-impl::fdefn-fun c))))
  52
  53 (defun find-code-constants (fun &key (type t))
  54   (let ((code (sb-kernel:fun-code-header (sb-kernel:%fun-fun fun))))
  55     (loop for i from sb-vm::code-constants-offset below (sb-kernel:get-header-data code)
  56           for c = (sb-kernel:code-header-ref code i)
  57           when (typep c type)
  58           collect c)))
  59
  60 (defmacro assert-no-consing (form &optional times)
  61   `(%assert-no-consing (lambda () ,form) ,times))
  62 (defun %assert-no-consing (thunk &optional times)
  63   (let ((before (sb-ext:get-bytes-consed))
  64         (times (or times 10000)))
  65     (declare (type (integer 1 *) times))
  66     (dotimes (i times)
  67       (funcall thunk))
  68     (assert (< (- (sb-ext:get-bytes-consed) before) times))))
  69
  70 (defmacro assert-consing (form &optional times)
  71   `(%assert-consing (lambda () ,form) ,times))
  72 (defun %assert-consing (thunk &optional times)
  73   (let ((before (sb-ext:get-bytes-consed))
  74         (times (or times 10000)))
  75     (declare (type (integer 1 *) times))
  76     (dotimes (i times)
  77       (funcall thunk))
  78     (assert (not (< (- (sb-ext:get-bytes-consed) before) times)))))