From 2a4a095e5788be7967c0ac311efc269bc87e80b3 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sat, 28 Dec 2002 20:03:01 +0000
Subject: [PATCH] Initial check in of MachineFunctionPass.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5162 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/MachineFunctionPass.h | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 include/llvm/CodeGen/MachineFunctionPass.h

diff --git a/include/llvm/CodeGen/MachineFunctionPass.h b/include/llvm/CodeGen/MachineFunctionPass.h
new file mode 100644
index 00000000000..f7ad51888e3
--- /dev/null
+++ b/include/llvm/CodeGen/MachineFunctionPass.h
@@ -0,0 +1,33 @@
+//===-- MachineFunctionPass.h - Pass for MachineFunctions --------*-C++ -*-===//
+//
+// This file defines the MachineFunctionPass class.  MachineFunctionPass's are
+// just FunctionPass's, except they operate on machine code as part of a code
+// generator.  Because they operate on machine code, not the LLVM
+// representation, MachineFunctionPass's are not allowed to modify the LLVM
+// representation.  Due to this limitation, the MachineFunctionPass class takes
+// care of declaring that no LLVM passes are invalidated.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H
+#define LLVM_CODEGEN_MACHINE_FUNCTION_PASS_H
+
+#include "llvm/Pass.h"
+#include "llvm/CodeGen/MachineFunction.h"
+
+struct MachineFunctionPass : public FunctionPass {
+
+  /// runOnMachineFunction - This method must be overloaded to perform the
+  /// desired machine code transformation or analysis.
+  ///
+  virtual bool runOnMachineFunction(MachineFunction &MF) = 0;
+
+  // FIXME: This pass should declare that the pass does not invalidate any LLVM
+  // passes.
+
+  virtual bool runOnFunction(Function &F) {
+    return runOnMachineFunction(MachineFunction::get(&F));
+  }
+};
+
+#endif