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82 lines
2.8 KiB
Common Lisp
82 lines
2.8 KiB
Common Lisp
;;;; CMPCT -- Optimizer for several constant values
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;;;; Copyright (c) 2003, Juan Jose Garcia Ripoll.
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;;;;
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;;;; ECoLisp is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Library General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 2 of the License, or (at your option) any later version.
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;;;;
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;;;; See file '../Copyright' for full details.
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(in-package "COMPILER")
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(defvar +optimizable-constant+ '())
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(defun c1constant-value (val always-p)
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(cond
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((let ((x (assoc val +optimizable-constant+)))
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(and x (c1expr (cdr x)))))
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((eq val nil) (c1nil))
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((eq val t) (c1t))
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((sys::fixnump val)
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(make-c1form* 'LOCATION :type 'FIXNUM :args (list 'FIXNUM-VALUE val)))
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((characterp val)
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(make-c1form* 'LOCATION :type 'CHARACTER
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:args (list 'CHARACTER-VALUE (char-code val))))
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((typep val 'LONG-FLOAT)
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(make-c1form* 'LOCATION :type 'LONG-FLOAT
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:args (list 'LONG-FLOAT-VALUE val (add-object val))))
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((typep val 'SHORT-FLOAT)
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(make-c1form* 'LOCATION :type 'SHORT-FLOAT
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:args (list 'SHORT-FLOAT-VALUE val (add-object val))))
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(always-p
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(make-c1form* 'LOCATION :type (object-type val)
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:args (list 'VV (add-object val))))
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(t nil)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;
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;;; OPTIMIZABLE DOUBLE CONSTANTS
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;;;
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(mapc
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#'(lambda (record)
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(let* ((name (first record))
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(c-value (second record))
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(value (symbol-value name))
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(type (lisp-type->rep-type (type-of value))))
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(push (cons value `(c-inline () () ,type ,c-value :one-liner t :side-effects nil))
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+optimizable-constant+)))
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'((MOST-POSITIVE-SHORT-FLOAT "FLT_MAX")
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(MOST-POSITIVE-SINGLE-FLOAT "FLT_MAX")
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(MOST-NEGATIVE-SHORT-FLOAT "-FLT_MAX")
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(MOST-NEGATIVE-SINGLE-FLOAT "-FLT_MAX")
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(LEAST-POSITIVE-SHORT-FLOAT "FLT_MIN")
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(LEAST-POSITIVE-SINGLE-FLOAT "FLT_MIN")
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(LEAST-POSITIVE-NORMALIZED-SHORT-FLOAT "FLT_MIN")
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(LEAST-POSITIVE-NORMALIZED-SINGLE-FLOAT" FLT_MIN")
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(LEAST-NEGATIVE-SHORT-FLOAT "-FLT_MIN")
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(LEAST-NEGATIVE-SINGLE-FLOAT "-FLT_MIN")
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(LEAST-NEGATIVE-NORMALIZED-SHORT-FLOAT "-FLT_MIN")
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(LEAST-NEGATIVE-NORMALIZED-SINGLE-FLOAT "-FLT_MIN")
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(MOST-POSITIVE-DOUBLE-FLOAT "DBL_MAX")
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(MOST-POSITIVE-LONG-FLOAT "DBL_MAX")
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(MOST-NEGATIVE-DOUBLE-FLOAT "-DBL_MAX")
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(MOST-NEGATIVE-LONG-FLOAT "-DBL_MAX")
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(LEAST-POSITIVE-DOUBLE-FLOAT "DBL_MIN")
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(LEAST-POSITIVE-LONG-FLOAT "DBL_MIN")
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(LEAST-POSITIVE-NORMALIZED-DOUBLE-FLOAT "DBL_MIN")
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(LEAST-POSITIVE-NORMALIZED-LONG-FLOAT" DBL_MIN")
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(LEAST-NEGATIVE-DOUBLE-FLOAT "-DBL_MIN")
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(LEAST-NEGATIVE-LONG-FLOAT "-DBL_MIN")
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(LEAST-NEGATIVE-NORMALIZED-DOUBLE-FLOAT "-DBL_MIN")
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(LEAST-NEGATIVE-NORMALIZED-LONG-FLOAT "-DBL_MIN")))
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