From 165fc3638f9666e94c5cfc4fe719697b0ce72774 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Tue, 6 Oct 2009 17:02:44 +0000
Subject: Split backend specific compilation functions from generic ones.

git-svn-id: http://svn.drobilla.net/resp/tuplr@191 ad02d1e2-f140-0410-9f75-f8b11f17cedd
---
 src/llvm.cpp | 123 +++++++----------------------------------------------------
 1 file changed, 14 insertions(+), 109 deletions(-)

(limited to 'src/llvm.cpp')

diff --git a/src/llvm.cpp b/src/llvm.cpp
index ec2c2a4..36f639f 100644
--- a/src/llvm.cpp
+++ b/src/llvm.cpp
@@ -17,6 +17,10 @@
 
 /** @file
  * @brief Compile AST to LLVM IR
+ *
+ * Compilation pass functions (lift/compile) that require direct use of LLVM
+ * specific things are implemented here.  Generic compilation pass functions
+ * are implemented in compile.cpp.
  */
 
 #include <map>
@@ -155,6 +159,11 @@ struct LLVMEngine : public Engine {
 			llFunc(f)->eraseFromParent();
 	}
 
+	CValue compileCall(CEnv& cenv, CFunction f, const vector<CValue>& args) {
+		const vector<Value*>& llArgs = *reinterpret_cast<const vector<Value*>*>(&args);
+		return builder.CreateCall(llFunc(f), llArgs.begin(), llArgs.end());
+	}
+
 	void writeModule(CEnv& cenv, std::ostream& os) {
 		AssemblyAnnotationWriter writer;
 		module->print(os, &writer);
@@ -211,44 +220,13 @@ tuplr_free_engine(Engine* engine)
  * Code Generation                                                         *
  ***************************************************************************/
 
-#define LITERAL(CT, NAME, COMPILED) \
-template<> CValue ALiteral<CT>::compile(CEnv& cenv) { return (COMPILED); } \
-template<> void \
-ALiteral<CT>::constrain(TEnv& tenv, Constraints& c) const { \
-	c.constrain(tenv, this, tenv.named(NAME)); \
-}
+#define COMPILE_LITERAL(CT, COMPILED) \
+template<> CValue ALiteral<CT>::compile(CEnv& cenv) { return (COMPILED); }
 
 // Literal template instantiations
-LITERAL(int32_t, "Int",   ConstantInt::get(Type::Int32Ty, val, true))
-LITERAL(float,   "Float", ConstantFP::get(Type::FloatTy, val))
-LITERAL(bool,    "Bool",  ConstantInt::get(Type::Int1Ty, val, false))
-
-CValue
-ASymbol::compile(CEnv& cenv)
-{
-	return cenv.vals.ref(this);
-}
-
-void
-AFn::lift(CEnv& cenv)
-{
-	cenv.push();
-	for (const_iterator p = prot()->begin(); p != prot()->end(); ++p)
-		cenv.def((*p)->as<ASymbol*>(), *p, NULL, NULL);
-
-	// Lift body
-	for (size_t i = 2; i < size(); ++i)
-		at(i)->lift(cenv);
-
-	cenv.pop();
-
-	AType* type = cenv.type(this);
-	if (impls.find(type) || !type->concrete())
-		return;
-
-	AType* protT = type->at(1)->as<AType*>();
-	liftCall(cenv, *protT);
-}
+COMPILE_LITERAL(int32_t, ConstantInt::get(Type::Int32Ty, val, true))
+COMPILE_LITERAL(float,   ConstantFP::get(Type::FloatTy, val))
+COMPILE_LITERAL(bool,    ConstantInt::get(Type::Int1Ty, val, false))
 
 void
 AFn::liftCall(CEnv& cenv, const AType& argsT)
@@ -404,79 +382,6 @@ AFn::compile(CEnv& cenv)
 	return tupPtr;*/
 }
 
-void
-ACall::lift(CEnv& cenv)
-{
-	AFn* c = cenv.tenv.resolve(at(0))->to<AFn*>();
-	AType argsT(loc);
-
-	// Lift arguments
-	for (size_t i = 1; i < size(); ++i) {
-		at(i)->lift(cenv);
-		argsT.push_back(cenv.type(at(i)));
-	}
-
-	if (!c) return; // Primitive
-
-	if (c->prot()->size() < size() - 1)
-		throw Error(loc, (format("too many arguments to function `%1%'") % at(0)->str()).str());
-	if (c->prot()->size() > size() - 1)
-		throw Error(loc, (format("too few arguments to function `%1%'") % at(0)->str()).str());
-
-	c->liftCall(cenv, argsT); // Lift called closure
-}
-
-CValue
-ACall::compile(CEnv& cenv)
-{
-	AFn* c = cenv.tenv.resolve(at(0))->to<AFn*>();
-
-	if (!c) return NULL; // Primitive
-
-	AType protT(loc);
-	vector<const Type*> types;
-	for (size_t i = 1; i < size(); ++i) {
-		protT.push_back(cenv.type(at(i)));
-		types.push_back(llType(cenv.type(at(i))));
-	}
-
-	TEnv::GenericTypes::const_iterator gt = cenv.tenv.genericTypes.find(c);
-	assert(gt != cenv.tenv.genericTypes.end());
-	AType fnT(loc);
-	fnT.push_back(cenv.penv.sym("Fn"));
-	fnT.push_back(&protT);
-	fnT.push_back(cenv.type(this));
-	Function* f = (Function*)c->impls.find(&fnT);
-	THROW_IF(!f, loc, (format("callee failed to compile for type %1%") % fnT.str()).str());
-
-	vector<Value*> params(size() - 1);
-	for (size_t i = 0; i < types.size(); ++i)
-		params[i] = llVal(cenv.compile(at(i+1)));
-
-	return llEngine(cenv)->builder.CreateCall(f, params.begin(), params.end());
-}
-
-void
-ADef::lift(CEnv& cenv)
-{
-	// Define stub first for recursion
-	cenv.def(sym(), at(2), cenv.type(at(2)), NULL);
-	AFn* c = at(2)->to<AFn*>();
-	if (c)
-		c->name = sym()->str();
-	at(2)->lift(cenv);
-}
-
-CValue
-ADef::compile(CEnv& cenv)
-{
-	// Define stub first for recursion
-	cenv.def(sym(), at(2), cenv.type(at(2)), NULL);
-	CValue val = cenv.compile(at(size() - 1));
-	cenv.vals.def(sym(), val);
-	return val;
-}
-
 CValue
 AIf::compile(CEnv& cenv)
 {
-- 
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