From 17b7148300a9043e9511b32fcf1f4f9f4488fbca Mon Sep 17 00:00:00 2001
From: Matt Pharr <matt.pharr@intel.com>
Date: Fri, 13 Apr 2012 19:50:45 -0700
Subject: [PATCH] Initial implementation of FunctionType::GetDIType

---
 type.cpp | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/type.cpp b/type.cpp
index 3795a3dc..e1372902 100644
--- a/type.cpp
+++ b/type.cpp
@@ -2535,9 +2535,22 @@ FunctionType::LLVMType(llvm::LLVMContext *ctx) const {
 
 llvm::DIType
 FunctionType::GetDIType(llvm::DIDescriptor scope) const {
-    // @todo need to implement FunctionType::GetDIType()
-    FATAL("need to implement FunctionType::GetDIType()");
-    return llvm::DIType();
+    std::vector<llvm::Value *> retArgTypes;
+
+    retArgTypes.push_back(returnType->GetDIType(scope));
+    for (int i = 0; i < GetNumParameters(); ++i) {
+        const Type *t = GetParameterType(i);
+        if (t == NULL)
+            return llvm::DIType();
+        retArgTypes.push_back(t->GetDIType(scope));
+    }
+
+    llvm::DIArray retArgTypesArray = 
+        m->diBuilder->getOrCreateArray(llvm::ArrayRef<llvm::Value *>(retArgTypes));
+    llvm::DIType diType = 
+        // FIXME: DIFile 
+        m->diBuilder->createSubroutineType(llvm::DIFile(), retArgTypesArray);
+    return diType;
 }