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[Guile-commits] GNU Guile branch, master, updated. v2.1.0-858-g0a44542

From: Andy Wingo
Subject: [Guile-commits] GNU Guile branch, master, updated. v2.1.0-858-g0a44542
Date: Wed, 02 Apr 2014 07:25:03 +0000

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The branch, master has been updated
       via  0a44542fce2f010dcf7e9edefe05187a62d08a05 (commit)
       via  f082c5f30aeb5b94e3d4791c01bab321716600a3 (commit)
      from  545274a03578b5fa5270c629d704fb9f815517cf (commit)

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- Log -----------------------------------------------------------------
commit 0a44542fce2f010dcf7e9edefe05187a62d08a05
Author: Andy Wingo <address@hidden>
Date:   Tue Apr 1 20:55:31 2014 +0200

    Fix DFG compute-reachable bug
    * module/language/cps/dfg.scm (compute-reachable): Fix embarassing bug
      where we wouldn't actually iterate to fixpoint.  I haven't seen it
      yet, but that's just luck...

commit f082c5f30aeb5b94e3d4791c01bab321716600a3
Author: Andy Wingo <address@hidden>
Date:   Tue Apr 1 20:52:15 2014 +0200

    Optimize two-list srfi-1 map
    * module/srfi/srfi-1.scm (map): Optimize the two-list variant.


Summary of changes:
 module/language/cps/dfg.scm |    2 +-
 module/srfi/srfi-1.scm      |   17 +++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/module/language/cps/dfg.scm b/module/language/cps/dfg.scm
index 4f32fce..c390427 100644
--- a/module/language/cps/dfg.scm
+++ b/module/language/cps/dfg.scm
@@ -231,7 +231,7 @@ for quickest convergence."
          ((zero? n)
           (if changed?
-              (lp 0 #f)
+              (lp k-count #f)
           (let ((n (1- n)))
diff --git a/module/srfi/srfi-1.scm b/module/srfi/srfi-1.scm
index 919d512..5e859d1 100644
--- a/module/srfi/srfi-1.scm
+++ b/module/srfi/srfi-1.scm
@@ -572,6 +572,23 @@ has just one element then that's the return value."
            (map1 (cdr in) (cons (f (car in)) out))
            (reverse! out))))
+    ((f l1 l2)
+     (check-arg procedure? f map)
+     (let* ((len1 (length+ l1))
+            (len2 (length+ l2))
+            (len (if (and len1 len2)
+                     (min len1 len2)
+                     (or len1 len2))))
+       (unless len
+         (scm-error 'wrong-type-arg "map"
+                    "Args do not contain a proper (finite) list: ~S"
+                    (list (list l1 l2)) #f))
+       (let map2 ((l1 l1) (l2 l2) (out '()) (len len))
+         (if (zero? len)
+             (reverse! out)
+             (map2 (cdr l1) (cdr l2)
+                   (cons (f (car l1) (car l2)) out) (1- len))))))
     ((f l1 . rest)
      (check-arg procedure? f map)
      (let ((len (fold (lambda (ls len)

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