2009/10/28 Robert Goldman rpgoldman@sift.info:
Faré wrote:
2009/10/28 Gary King gwking@metabang.com:
Speaking of optimization settings, does anyone see any problem with putting in ASDF something that deterministically (re)sets the optimization setting before each and any perform operation? Otherwise, optimization settings will vary wildly depending on what implementation you use, which files get recompiled, etc.
I think we should do this; it's on my list.
Here's a skeleton of implementation (don't forget a defgeneric).
(defmethod perform :before (operation component) (proclaim-optimization-settings-for operation component))
(defmethod proclaim-optimization-settings-for (op component) (declare (ignorable op component)) (proclaim `(optimize ,@*default-optimization-settings*)))
Unrelatedly, a slight refactoring patch is attached. It would makes it easier for ADG and other ASDF add-ons to reuse in a future-proof way the ASDF pathname merging algorithm.
Do we need a :after method to restore the old settings? I'm not sure how to do that actually, since I don't believe there's a portable way to record them. Do you have thoughts about this?
(rpg replied to me in private but I'm Cc'ing back the list)
At ITA, we actually use a :around method with
(defun call-with-local-compilation-settings (thunk) (let #+clozure ((ccl::*nx-speed* ccl::*nx-speed*) (ccl::*nx-space* ccl::*nx-space*) (ccl::*nx-safety* ccl::*nx-safety*) (ccl::*nx-cspeed* ccl::*nx-cspeed*) (ccl::*nx-debug* ccl::*nx-debug*)) #+sbcl ((sb-c::*policy* sb-c::*policy*)) #-(or clozure sbcl) () (funcall thunk)))
(defmacro with-local-compilation-settings (() &body body) `(call-with-local-compilation-settings (lambda () ,@body)))
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