Don't add unused vardecls to the code

git-svn-id: https://openmodelica.org/svn/OpenModelica/trunk@15247 f25d12d1-65f4-0310-ae8a-bbce733d8d8e
OpenModelica · Feb 20, 2013 · 56c25a3 · 56c25a3
1 parent 6ce9cb3
commit 56c25a3
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/Compiler/Template/CodegenC.tpl b/Compiler/Template/CodegenC.tpl
@@ -6904,8 +6904,11 @@ template daeExpRelation(Exp exp, Context context, Text &preExp /*BUFP*/,
 ::=
 match exp
 case rel as RELATION(__) then
-  let simRel = daeExpRelationSim(rel, context, &preExp /*BUFC*/, &varDecls /*BUFD*/)
+  let &varDecls2 = buffer ""
+  let simRel = daeExpRelationSim(rel, context, &preExp /*BUFC*/, &varDecls2 /*BUFD*/)
   if simRel then
+    /* Don't add the allocated temp-var unless it is used */
+    let &varDecls += varDecls2
     simRel
   else
     let e1 = daeExp(rel.exp1, context, &preExp /*BUFC*/, &varDecls /*BUFD*/)

diff --git a/Examples/BuildModelRecursive.mos b/Examples/BuildModelRecursive.mos
@@ -114,7 +114,7 @@ str:="<h1>Recursive BuildModel Test</h1>
 <p>BuildModel time limit: "+ulimitOmc+"s</p>
 <p>Simulation time limit: "+ulimitExe+"s</p>
 <p>Flags: setCommandLineOptions(\"+d=nogen\"); setMatchingAlgorithm(\"PFPlusExt\"); setIndexReductionMethod(\"dynamicStateSelection\");</p>
-<p>Links are provided if getErrorString() or the simulation generates output. <font style=\"background-color:#00FF00\">Green</style> means success, <font style=\"background-color:#FFFF00\">yellow</font> means success if +d=scodeInstShortcut was used. <font style=\"background-color:#FF0000\">Red</font> is bad and in general signifies a failure.</p>
+<p>Links are provided if getErrorString() or the simulation generates output. <font style=\"background-color:#00FF00\">Green</font> means success, <font style=\"background-color:#FFFF00\">yellow</font> means success if +d=scodeInstShortcut was used. <font style=\"background-color:#FF0000\">Red</font> is bad and in general signifies a failure.</p>
 ";
 writeFile(log,"<html><head><title>BuildModel Results</title></head><body>" + str);
 writeFile(log,"<table><tr><th>Model</th><th>Simulate</th><th>Total buildModel</th><th>Frontend</th><th>Backend</th><th>SimCode</th><th>Templates</th><th>Compile</th></tr>",append=true);getErrorString();