X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fprogramcompiler.cpp;h=934416c28684f250fa8c37b9d842f5f05c39b7a9;hp=79031e41eeda0cc970162d3632c31eaadd253ae5;hb=96881e56ececfa3f4b0707dc168c687b35d249a0;hpb=b3e71de19f35773c22391151ebb02062d6894bc9

diff --git a/source/programcompiler.cpp b/source/programcompiler.cpp
index 79031e41..934416c2 100644
--- a/source/programcompiler.cpp
+++ b/source/programcompiler.cpp
@@ -55,8 +55,13 @@ void ProgramCompiler::process()
 {
 	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
 		generate(*i);
-	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
-		optimize(*i);
+	for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); )
+	{
+		if(optimize(*i))
+			i = module->stages.begin();
+		else
+			++i;
+	}
 }
 
 void ProgramCompiler::generate(Stage &stage)
@@ -69,20 +74,16 @@ void ProgramCompiler::generate(Stage &stage)
 	apply<VariableRenamer>(stage);
 }
 
-void ProgramCompiler::optimize(Stage &stage)
+bool ProgramCompiler::optimize(Stage &stage)
 {
-	while(1)
-	{
-		UnusedVariableLocator unused_locator;
-		unused_locator.apply(stage);
+	UnusedVariableLocator unused_locator;
+	unused_locator.apply(stage);
 
-		NodeRemover remover;
-		remover.to_remove = unused_locator.unused_nodes;
-		remover.apply(stage);
+	NodeRemover remover;
+	remover.to_remove = unused_locator.unused_nodes;
+	remover.apply(stage);
 
-		if(!remover.n_removed)
-			break;
-	}
+	return remover.n_removed;
 }
 
 void ProgramCompiler::inject_block(Block &target, const Block &source)