Changeset: 13b1b8e721a1 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=13b1b8e721a1
Modified Files:
monetdb5/optimizer/opt_dataflow.mx
Branch: default
Log Message:
Simple flow includes simple arithmetic
diffs (23 lines):
diff --git a/monetdb5/optimizer/opt_dataflow.mx
b/monetdb5/optimizer/opt_dataflow.mx
--- a/monetdb5/optimizer/opt_dataflow.mx
+++ b/monetdb5/optimizer/opt_dataflow.mx
@@ -110,6 +110,11 @@ opt_export void removeDataflow(InstrPtr
#include "mal_instruction.h"
#include "mal_interpreter.h"
+/*
+ * dataflow processing incurs overhead and is only
+ * relevant if multiple tasks kan be handled at the same time.
+ * Also simple expressions dont had to be done in parallel.
+*/
static int
simpleFlow(InstrPtr *old, int start, int last)
{
@@ -124,6 +129,7 @@ simpleFlow(InstrPtr *old, int start, int
for( j= q->retc; j<q->argc; j++)
if( getArg(p,0) == getArg(q,j))
simple= TRUE;
+ simple |= getModuleId(p) == calcRef || getModuleId(p) ==
mtimeRef || getModuleId(p) == strRef || getModuleId(p)== mmathRef;
if( !simple)
return 0;
p = q;
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