Move Target implementation out of dmdfe

gen/target.cpp

@@ -0,0 +1,53 @@
+//===-- target.cpp -------------------------------------------------------===//
+//
+//                         LDC – the LLVM D compiler
+//
+// This file is distributed under the BSD-style LDC license. See the LICENSE
+// file for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <assert.h>
+
+#include "target.h"
+#include "mars.h"
+#include "mtype.h"
+
+unsigned GetTypeAlignment(Type* t);
+unsigned GetPointerSize();
+unsigned GetTypeStoreSize(Type* t);
+unsigned GetTypeAllocSize(Type* t);
+
+int Target::ptrsize;
+int Target::realsize;
+int Target::realpad;
+int Target::realalignsize;
+
+void Target::init()
+{
+    ptrsize = GetPointerSize();
+    realsize = GetTypeAllocSize(Type::basic[Tfloat80]);
+    realpad = realsize - GetTypeStoreSize(Type::basic[Tfloat80]);
+    realalignsize = GetTypeAlignment(Type::basic[Tfloat80]);
+}
+
+/******************************
+ * Return memory alignment size of type.
+ */
+
+unsigned Target::alignsize (Type* type)
+{
+    assert (type->isTypeBasic());
+    if (type->ty == Tvoid) return 1;
+    return GetTypeAlignment(type);
+}
+
+/******************************
+ * Return field alignment size of type.
+ */
+
+unsigned Target::fieldalign (Type* type)
+{
+    // LDC_FIXME: Verify this.
+    return type->alignsize();
+}