Initial support for machine code emission

llvm-svn: 4866

3 files changed, 81 insertions, 0 deletions

diff --git a/llvm/lib/Target/X86/MachineCodeEmitter.cpp b/llvm/lib/Target/X86/MachineCodeEmitter.cpp
new file mode 100644
index 00000000000..ba82503e495
--- /dev/null
+++ b/llvm/lib/Target/X86/MachineCodeEmitter.cpp
@@ -0,0 +1,36 @@
+//===-- X86/MachineCodeEmitter.cpp - Convert X86 code to machine code -----===//
+//
+// This file contains the pass that transforms the X86 machine instructions into
+// actual executable machine code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "X86TargetMachine.h"
+#include "llvm/PassManager.h"
+#include "llvm/CodeGen/MachineCodeEmitter.h"
+
+namespace {
+  struct Emitter : public FunctionPass {
+    TargetMachine &TM;
+    MachineCodeEmitter &MCE;
+
+    Emitter(TargetMachine &tm, MachineCodeEmitter &mce) : TM(tm), MCE(mce) {}
+    ~Emitter() {
+    }
+
+    bool runOnFunction(Function &F) { return false; }
+  };
+}
+
+
+/// addPassesToEmitMachineCode - Add passes to the specified pass manager to get
+/// machine code emitted.  This uses a MAchineCodeEmitter object to handle
+/// actually outputting the machine code and resolving things like the address
+/// of functions.  This method should returns true if machine code emission is
+/// not supported.
+///
+bool X86TargetMachine::addPassesToEmitMachineCode(PassManager &PM,
+                                                  MachineCodeEmitter &MCE) {
+  PM.add(new Emitter(*this, MCE));
+  return false;
+}
diff --git a/llvm/lib/Target/X86/X86CodeEmitter.cpp b/llvm/lib/Target/X86/X86CodeEmitter.cpp
new file mode 100644
index 00000000000..ba82503e495
--- /dev/null
+++ b/llvm/lib/Target/X86/X86CodeEmitter.cpp
@@ -0,0 +1,36 @@
+//===-- X86/MachineCodeEmitter.cpp - Convert X86 code to machine code -----===//
+//
+// This file contains the pass that transforms the X86 machine instructions into
+// actual executable machine code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "X86TargetMachine.h"
+#include "llvm/PassManager.h"
+#include "llvm/CodeGen/MachineCodeEmitter.h"
+
+namespace {
+  struct Emitter : public FunctionPass {
+    TargetMachine &TM;
+    MachineCodeEmitter &MCE;
+
+    Emitter(TargetMachine &tm, MachineCodeEmitter &mce) : TM(tm), MCE(mce) {}
+    ~Emitter() {
+    }
+
+    bool runOnFunction(Function &F) { return false; }
+  };
+}
+
+
+/// addPassesToEmitMachineCode - Add passes to the specified pass manager to get
+/// machine code emitted.  This uses a MAchineCodeEmitter object to handle
+/// actually outputting the machine code and resolving things like the address
+/// of functions.  This method should returns true if machine code emission is
+/// not supported.
+///
+bool X86TargetMachine::addPassesToEmitMachineCode(PassManager &PM,
+                                                  MachineCodeEmitter &MCE) {
+  PM.add(new Emitter(*this, MCE));
+  return false;
+}
diff --git a/llvm/lib/Target/X86/X86TargetMachine.h b/llvm/lib/Target/X86/X86TargetMachine.h
index 9db8375d8df..065fd368a21 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.h
+++ b/llvm/lib/Target/X86/X86TargetMachine.h
@@ -30,6 +30,15 @@ public:
   /// not supported for this target.
   ///
   virtual bool addPassesToJITCompile(PassManager &PM);
+
+  /// addPassesToEmitMachineCode - Add passes to the specified pass manager to
+  /// get machine code emitted.  This uses a MAchineCodeEmitter object to handle
+  /// actually outputting the machine code and resolving things like the address
+  /// of functions.  This method should returns true if machine code emission is
+  /// not supported.
+  ///
+  virtual bool addPassesToEmitMachineCode(PassManager &PM,
+                                          MachineCodeEmitter &MCE);
 };
 
 #endif