Update of /cvsroot/monetdb/pathfinder/compiler
In directory 23jxhf1.ch3.sourceforge.com:/tmp/cvs-serv28729/compiler
Modified Files:
Tag: Aug2009_NFI
compile.c
Log Message:
enable heuristic rewrite value-selections in the algebra backend of
MonetDB/xQuery
has to properly implement pf:attribute(ctx, node, ns1, loc1, ns2, loc2) first,
as only the verion without namespaces was there (that one is now gone).
many restrictions:
- only non-loop-lifted equality tests
- not involving fn:collection or pf:collection (as path reversal in the latter
will never find the supernode)
- not involving any date/time/etc typed expressions (as the indices only work
for string and numerical equality)
went through the testweb and fixed all apparant problems
note the Aug2009_NFI value indices are full; whereas previously they would omit
frequent data items
U compile.c
Index: compile.c
===================================================================
RCS file: /cvsroot/monetdb/pathfinder/compiler/compile.c,v
retrieving revision 1.182.6.1
retrieving revision 1.182.6.2
diff -u -d -r1.182.6.1 -r1.182.6.2
--- compile.c 28 Sep 2009 23:20:24 -0000 1.182.6.1
+++ compile.c 6 Oct 2009 17:22:46 -0000 1.182.6.2
@@ -451,16 +451,14 @@
/* Heuristic path-reversal rewrites to start evaluation
with indexable expressions. */
- if (status->output_format == PFoutput_format_milprint_summer) {
- /* NOTE: algebra MIL/MAL generation could/should also use it.. */
- tm = PFtimer_start ();
+ tm = PFtimer_start ();
+ if (status->output_format == PFoutput_format_mil ||
+ status->output_format == PFoutput_format_milprint_summer) {
proot = PFheuristic_index (proot);
tm = PFtimer_stop (tm);
if (status->timing)
PFlog ("path heuristics:\t\t\t %s", PFtimer_str (tm));
-
}
-
STOP_POINT(3);
/* Initialize data structures in the Namespace department */
@@ -1022,8 +1020,9 @@
module_base = PFparse_modules (proot, &PFquery,
PFstate.standoff_axis_steps);
proot = PFnormalize_abssyn (proot);
- if (PFstate.output_format == PFoutput_format_milprint_summer) {
- /* algebra MIL/MAL generation could/should also use it.. */
+
+ if (PFstate.output_format == PFoutput_format_mil ||
+ PFstate.output_format == PFoutput_format_milprint_summer) {
proot = PFheuristic_index (proot);
}
PFns_init ();
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