Initial support for machine code emission

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4866 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/Target/X86/MachineCodeEmitter.cpp b/lib/Target/X86/MachineCodeEmitter.cpp
new file mode 100644
index 0000000000..ba82503e49
--- /dev/null
+++ b/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;
+}