Rip JIT specific stuff out of TargetMachine, as per PR176


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10542 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86JITInfo.h b/lib/Target/X86/X86JITInfo.h
new file mode 100644
index 0000000..bce6e95
--- /dev/null
+++ b/lib/Target/X86/X86JITInfo.h
@@ -0,0 +1,47 @@
+//===- X86JITInfo.h - X86 implementation of the JIT interface  --*- 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 contains the X86 implementation of the TargetJITInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef X86JITINFO_H
+#define X86JITINFO_H
+
+#include "llvm/Target/TargetJITInfo.h"
+
+namespace llvm {
+  class TargetMachine;
+  class X86JITInfo : public TargetJITInfo {
+    TargetMachine &TM;
+  public:
+    X86JITInfo(TargetMachine &tm) : TM(tm) {}
+
+    /// addPassesToJITCompile - Add passes to the specified pass manager to
+    /// implement a fast dynamic compiler for this target.  Return true if this
+    /// is not supported for this target.
+    ///
+    virtual void addPassesToJITCompile(FunctionPassManager &PM);
+    
+    /// replaceMachineCodeForFunction - Make it so that calling the function
+    /// whose machine code is at OLD turns into a call to NEW, perhaps by
+    /// overwriting OLD with a branch to NEW.  This is used for self-modifying
+    /// code.
+    ///
+    virtual void replaceMachineCodeForFunction (void *Old, void *New);
+    
+    /// getJITStubForFunction - Create or return a stub for the specified
+    /// function.  This stub acts just like the specified function, except that
+    /// it allows the "address" of the function to be taken without having to
+    /// generate code for it.
+    virtual void *getJITStubForFunction(Function *F, MachineCodeEmitter &MCE);
+  };
+}
+
+#endif