Fix build with LLVM 3.5

gen/llvm.h

@@ -61,9 +61,6 @@
 
 using llvm::IRBuilder;
 
-// for WriteTypeSymbolic
-#include "llvm/Assembly/Writer.h"
-
 #define GET_INTRINSIC_DECL(_X) (llvm::Intrinsic::getDeclaration(gIR->module, llvm::Intrinsic:: _X ))
 
 // shortcuts for the common llvm types

gen/logger.cpp

@@ -24,7 +24,11 @@
 #endif
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/raw_os_ostream.h"
+#if LDC_LLVM_VER >= 305
+#include "llvm/IR/Value.h"
+#else
 #include "llvm/Assembly/Writer.h"
+#endif
 
 #include "gen/logger.h"
 #include "gen/irstate.h"
@@ -40,7 +44,11 @@ void Stream::writeValue(std::ostream& OS, const llvm::Value& V) {
     // still get their initializers printed)
     llvm::raw_os_ostream raw(OS);
     if (llvm::isa<llvm::Constant>(V) && !llvm::isa<llvm::GlobalValue>(V))
+#if LDC_LLVM_VER >= 305
+        V.printAsOperand(raw, true, gIR->module);
+#else
         llvm::WriteAsOperand(raw, &V, true, gIR->module);
+#endif
     else
         V.print(raw);
 }