From 10174ffc7ea08b7845dbe409a11811e820536468 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sat, 15 Dec 2012 07:06:22 +0000
Subject: Compile constructors as LLVM struct types. Use LLVM type names
 instead of hyper verbose literal types in more places in general. More work
 on quoting.

git-svn-id: http://svn.drobilla.net/resp/trunk@439 ad02d1e2-f140-0410-9f75-f8b11f17cedd
---
 src/llvm.cpp | 50 ++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 38 insertions(+), 12 deletions(-)

(limited to 'src/llvm.cpp')

diff --git a/src/llvm.cpp b/src/llvm.cpp
index 7f521b7..795cd8c 100644
--- a/src/llvm.cpp
+++ b/src/llvm.cpp
@@ -100,7 +100,7 @@ struct LLVMEngine : public Engine {
 	CVal  compileLiteral(CEnv& cenv, const AST* lit);
 	CVal  compilePrimitive(CEnv& cenv, const ATuple* prim);
 	CVal  compileString(CEnv& cenv, const char* str);
-	CType compileType(CEnv& cenv, const char* name, const AST* exp);
+	CType compileType(CEnv& cenv, const std::string& name, const AST* exp);
 
 	void writeModule(CEnv& cenv, std::ostream& os);
 
@@ -193,7 +193,6 @@ LLVMEngine::llType(const AST* t, const char* name)
 		if (sym == "Float")   return Type::getFloatTy(context);
 		if (sym == "String")  return PointerType::get(Type::getInt8Ty(context), 0);
 		if (sym == "Symbol")  return PointerType::get(Type::getInt8Ty(context), 0);
-		if (sym == "Expr")    return PointerType::get(Type::getInt8Ty(context), 0);
 		if (sym == opaqueName) {
 			THROW_IF(!opaqueT, t->loc, "Broken recursive type");
 			return PointerType::getUnqual(opaqueT);
@@ -233,6 +232,21 @@ LLVMEngine::llType(const AST* t, const char* name)
 	Type*         ret = NULL;
 	vector<Type*> ctypes;
 
+	
+	if (!name) {
+		const ASymbol* tag = t->as_tuple()->fst()->as_symbol();
+		if (tag->str() != "Tup" && tag->str() != "Closure") {
+			name = tag->str().c_str();
+		}
+	}
+
+	if (name) {
+		CTypes::const_iterator i = compiledTypes.find(name);
+		if (i != compiledTypes.end()) {
+			return i->second;
+		}
+	}
+
 	// Define opaque type to stand for name in recursive type body
 	if (name) {
 		THROW_IF(opaqueT, t->loc, "Nested recursive types");
@@ -279,7 +293,17 @@ LLVMEngine::compileCall(CEnv& cenv, CFunc f, const ATuple* funcT, const vector<C
 CVal
 LLVMEngine::compileCast(CEnv& cenv, CVal v, const AST* t)
 {
-	return builder.CreateBitCast(llVal(v), (Type*)compileType(cenv, NULL, t), "cast");
+	const ATuple* tup = t->to_tuple();
+	string        name;
+	if (tup) {
+		const ASymbol* head = tup->fst()->to_symbol();
+		if (head && head->str() != "Fn" && isupper(head->str()[0])) {
+			name = head->str();
+		}
+	} else if (t->to_symbol()) {
+		name = t->to_symbol()->str();
+	}
+	return builder.CreateBitCast(llVal(v), (Type*)compileType(cenv, name, cenv.resolveType(t)), "cast");
 }
 
 CVal
@@ -291,7 +315,7 @@ LLVMEngine::compileCons(CEnv& cenv, const char* tname, const ATuple* type, CVal
 	assert(type->begin() != type->end());
 	for (ATuple::const_iterator i = type->iter_at(1); i != type->end(); ++i)
 		s += engine->getTargetData()->getTypeSizeInBits(
-			(Type*)compileType(cenv, NULL, *i));
+			(Type*)compileType(cenv, (*i)->str(), *i));
 
 	// Allocate struct
 	const std::string name = type->fst()->str();
@@ -354,17 +378,18 @@ LLVMEngine::compileString(CEnv& cenv, const char* str)
 }
 
 CType
-LLVMEngine::compileType(CEnv& cenv, const char* name, const AST* expr)
+LLVMEngine::compileType(CEnv& cenv, const std::string& name, const AST* expr)
 {
-	if (name) {
+	if (!name.empty()) {
 		CTypes::const_iterator i = compiledTypes.find(name);
-		if (i != compiledTypes.end())
+		if (i != compiledTypes.end()) {
 			return i->second;
+		}
 	}
 
-	Type* const type = llType(expr, name);
+	Type* const type = llType(expr, name.c_str());
 
-	if (name)
+	if (!name.empty())
 		compiledTypes.insert(make_pair(name, type));
 
 	return type;
@@ -381,8 +406,9 @@ LLVMEngine::startFn(
 
 	vector<Type*> cprot;
 	FOREACHP(ATuple::const_iterator, i, argsT) {
-		const char* name = (*i)->to_symbol() ? (*i)->as_symbol()->sym() : NULL;
-		CType       iT   = compileType(cenv, name, cenv.resolveType(*i));
+		const CType iT = ((*i)->to_symbol())
+			? compileType(cenv, (*i)->str(), cenv.resolveType(*i))
+			: compileType(cenv, (*i)->as_tuple()->fst()->str(), *i);
 		THROW_IF(!iT, Cursor(), string("non-concrete parameter :: ") + (*i)->str());
 		cprot.push_back((Type*)iT);
 	}
@@ -432,7 +458,7 @@ LLVMEngine::pushFnArgs(CEnv& cenv, const ATuple* prot, const ATuple* type, CFunc
 	assert(prot->size() == argsT->size());
 	assert(prot->size() == f->num_args());
 	for (Function::arg_iterator a = f->arg_begin(); a != f->arg_end(); ++a, ++p, ++pT) {
-		const AST* t  = cenv.resolveType(*pT);
+		const AST* t  = *pT;//cenv.resolveType(*pT);
 //		THROW_IF(!llType(t), (*p)->loc, "untyped parameter\n");
 		cenv.def((*p)->as_symbol(), *p, t, &*a);
 	}
-- 
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