hints/dec_osf.sh: polishing the comments

private-msgid: <199701301958.VAA08992@alpha.hut.fi>

diff --git a/hints/dec_osf.sh b/hints/dec_osf.sh
index efe2c8a65bf64074be247c785d2ece6f8d2acd8e..f0b380bf8cc613273719431ff59925e4d1ebeb78 100644 (file)
--- a/hints/dec_osf.sh
+++ b/hints/dec_osf.sh
@@ -22,8 +22,17 @@
 #      executable code simply do not agree any more while in
 #      mid-execution, the optimiser only cares about the results.
 #
-#      Note: Configure will automatically
-#       add the often quoted -DDEBUGGING for you)
+#      Note 3: Configure will automatically add the often quoted
+#      -DDEBUGGING for you if the -g is specified.
+#
+#      Note 4: There is even more optimisation available in the new
+#      (GEM) DEC cc: -O5 and -fast. "man cc" will tell more about them.
+#      The jury is still out whether either or neither help for Perl
+#      and how much. Based on very quick testing, -fast boosts
+#      raw data copy by about 5-15% (-fast brings in, among other
+#      things, inlined, ahem, fast memcpy()), while on the other
+#      hand searching things (index, m//, s///), seems to get slower.
+#      Your mileage will vary.
 #
 
 case "$optimize" in
@@ -84,6 +93,15 @@ esac
 #
 # History:
 #
+# perl5.003_24:
+#
+#      30-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi>
+#
+#      * Fixing the note on -DDEBUGGING.
+#
+#      * Note on -O5 -fast.
+#
+#
 # perl5.003_23:
 #
 #      26-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi>