Better integration with the LLVM Target system.

In particular, this is needed to make getOptLevel() work.

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/Target/JSBackend/MCTargetDesc/JSBackendMCTargetDesc.cpp b/lib/Target/JSBackend/MCTargetDesc/JSBackendMCTargetDesc.cpp
new file mode 100644
index 0000000000..f7ba068683
--- /dev/null
+++ b/lib/Target/JSBackend/MCTargetDesc/JSBackendMCTargetDesc.cpp
@@ -0,0 +1,31 @@
+//===-- JSBackendMCTargetDesc.cpp - JS Backend Target Descriptions --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides asm.js specific target descriptions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "JSBackendMCTargetDesc.h"
+#include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/Support/TargetRegistry.h"
+using namespace llvm;
+
+static MCCodeGenInfo *createJSBackendMCCodeGenInfo(StringRef Triple, Reloc::Model RM,
+                                                   CodeModel::Model CM,
+                                                   CodeGenOpt::Level OL) {
+  MCCodeGenInfo *X = new MCCodeGenInfo();
+  X->InitMCCodeGenInfo(RM, CM, OL);
+  return X;
+}
+
+// Force static initialization.
+extern "C" void LLVMInitializeJSBackendTargetMC() {
+  // Register the MC codegen info.
+  RegisterMCCodeGenInfoFn C(TheJSBackendTarget, createJSBackendMCCodeGenInfo);
+}