lot of fixes to have a working llvm-as

compilecontext.cpp

@@ -182,9 +182,15 @@ void CompileContext::generateMain() {
 
 	// FIXME main should be void -> int
 	llvm::Function *main = helperCreateFunction("main");
+
 	
+	//llvm::BasicBlock *mainLoop= & main->getEntryBlock();
+	//mainLoop->setName("infiniteLoop");
+
 	llvm::BasicBlock *mainLoop = llvm::BasicBlock::Create(llvm::getGlobalContext(),
-			"infiniteLoop", main);
+			"infiniteLoop");
+	irbuilder.CreateBr(mainLoop); // needed to have an enty without predecessor
+	main->getBasicBlockList().push_back(mainLoop);
 	irbuilder.SetInsertPoint(mainLoop);
 
 	// call each state's 'do step' function
@@ -194,6 +200,11 @@ void CompileContext::generateMain() {
 
 	// this is an infinite loop for now ;)
 	irbuilder.CreateBr(mainLoop);
+
+	llvm::BasicBlock *useless = llvm::BasicBlock::Create(llvm::getGlobalContext(),
+			"useless_ret");
+	main->getBasicBlockList().push_back(useless);
+	irbuilder.SetInsertPoint(useless);
 	irbuilder.CreateRet(nullptr);
 }
 
@@ -211,7 +222,7 @@ llvm::Function *CompileContext::helperCreateFunction(const std::string &name,
 				false);
 	}
 
-	ret = llvm::Function::Create(type, llvm::GlobalValue::CommonLinkage,
+	ret = llvm::Function::Create(type, llvm::GlobalValue::ExternalLinkage,
 			name, module.get());
 
 	// create a new Basic Block

compilecontext.hpp

@@ -257,8 +257,11 @@ public:
 	
 	void addVariable(const std::string &name, Variable var = Variable()) {
 		// create a new global variable
-		if(!var.value)
-			var.value = helperCreateVariable(variableName(name));
+		if(!var.value) {
+			llvm::ConstantInt *zero = llvm::ConstantInt::get(
+					llvm::Type::getInt32Ty(llvm::getGlobalContext()), 0, false);
+			var.value = helperCreateVariable(variableName(name), zero);
+		}
 			
 		variables[name] = var;
 

main.cpp

@@ -7,6 +7,8 @@
 #include <llvm/IR/PassManager.h>
 #include <llvm/LinkAllPasses.h>
 
+#include <llvm/Support/TargetRegistry.h>
+
 //extern "C" int yylex() {}
 extern int yyparse();
 
@@ -48,15 +50,26 @@ int main() {
 	// now generate the code for the main()
 	ccon.generateMain();
 
-	std::cout << "Done." << std::endl;
+	std::cerr << "Code generated." << std::endl;
 
 	llvm::ModulePassManager pm;
 	llvm::ModulePass * printer = llvm::createPrintModulePass(llvm::outs());
 	MagicModulePass magic(printer);
-	// FUUUUUCK....
+
+	// for a strange reason, my LLVM version have compile-time problems if
+	// I give the printer ModulePass directly directly
 	pm.addPass<MagicModulePass>(magic);
 	pm.run(ccon.getModule());
 
+	std::cerr << "\nListing supported targets :" << std::endl;
+	for(auto& target: llvm::TargetRegistry::targets()) {
+		std::cerr << target.getName() << std::endl;
+	}
+
+	//llvm::TargetRegistry::printRegisteredTargetsForVersion();
+
+	//llvm::TargetMachine *armMachine = new llvm::ARM
+
 	return 0;
 }
 

node.cpp

@@ -231,7 +231,6 @@ llvm::Value *NAutoItem::codeGen(CompileContext &ccon) {
 	// add initialization function
 	acon->activateDefinition();
 	stmts->codeGen(ccon);
-
 	acon->terminateInitiliazer();
 
 	// add states : special case, need to "declare" all states before
@@ -256,7 +255,7 @@ llvm::Value *NState::codeGen(CompileContext &ccon) {
 	// generate the init function
 	thisState->activateInitializer();
 	stmts->codeGen(ccon);
-	thisState->activateInitializer();
+	thisState->terminateInitiliazer();
 	
 	// generate the polling function
 	thisState->activateSignalPolling();
@@ -390,7 +389,7 @@ llvm::Value *NBitfieldVariable::assignCodeGen(CompileContext &ccon,
 	if(!bitFrom && !bitTo) {
 		Variable var = ccon.lookupVariable(ident->ident);
 		if(var.value) {
-			return ccon.builder().CreateStore(var.value, val);
+			return ccon.builder().CreateStore(val, var.value);
 		}	
 		else {
 			if(ccon.lookupConstant(ident->ident)) {