Improved hashing of flonums.

diff --git a/v8/src/compiler/rtlopt/rcse2.scm b/v8/src/compiler/rtlopt/rcse2.scm
index 2d7a34803b12c56e965980ba1436269666da9455..968f73eb325d59fd3dd9436a556ca25ec1c443c1 100644 (file)
--- a/v8/src/compiler/rtlopt/rcse2.scm
+++ b/v8/src/compiler/rtlopt/rcse2.scm
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Id: rcse2.scm,v 1.2 1996/07/24 03:09:30 adams Exp $
+$Id: rcse2.scm,v 1.3 1996/07/24 04:44:06 adams Exp $
 
 Copyright (c) 1988-1994 Massachusetts Institute of Technology
 
@@ -145,7 +145,8 @@ MIT in each case. |#
     (define (continue expression)
       (rtl:reduce-subparts expression + 0 loop
        (lambda (object)
-         (cond ((real? object)   (round->exact object))
+         (cond ((flo:flonum? object) (flonum-hash object))
+               ((integer? object) (inexact->exact object))
                ((symbol? object) (symbol-hash object))
                ((string? object) (string-hash object))
                (else (hash object))))))
@@ -154,6 +155,10 @@ MIT in each case. |#
       (receiver (modulo hash (hash-table-size))
                do-not-record?
                hash-arg-in-memory?))))
+
+(define (flonum-hash x)
+  (let ((m.e ((ucode-primitive flonum-normalize 1) x)))
+    (+ (round->exact (* (expt 2 53) (car m.e))) (cdr m.e))))
 \f
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