Convert the C backend into a target, for use with LLC. This allows us to use

the lowerallocations pass to eliminate malloc/free warnings and hackish code


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11409 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 39 insertions, 0 deletions

diff --git a/lib/Target/CBackend/CTargetMachine.h b/lib/Target/CBackend/CTargetMachine.h
new file mode 100644
index 0000000000..53e01471ea
--- /dev/null
+++ b/lib/Target/CBackend/CTargetMachine.h
@@ -0,0 +1,39 @@
+//===-- CTargetMachine.h - TargetMachine for the C backend ------*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+// 
+// This file declares the TargetMachine that is used by the C backend.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CTARGETMACHINE_H
+#define CTARGETMACHINE_H
+
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+class IntrinsicLowering;
+
+struct CTargetMachine : public TargetMachine {
+  CTargetMachine(const Module &M, IntrinsicLowering *IL) :
+    TargetMachine("CBackend", IL) {}
+
+  virtual const TargetInstrInfo &getInstrInfo() const { abort(); }
+  virtual const TargetFrameInfo &getFrameInfo() const { abort(); }
+  virtual const TargetSchedInfo &getSchedInfo() const { abort(); }
+  virtual const TargetRegInfo   &getRegInfo()   const { abort(); }
+  virtual const TargetCacheInfo &getCacheInfo() const { abort(); }
+
+  // This is the only thing that actually does anything here.
+  virtual bool addPassesToEmitAssembly(PassManager &PM, std::ostream &Out);
+};
+
+} // End llvm namespace
+
+
+#endif