Check in LLVM r95781.
diff --git a/lib/CodeGen/Passes.cpp b/lib/CodeGen/Passes.cpp
new file mode 100644
index 0000000..f67eb79
--- /dev/null
+++ b/lib/CodeGen/Passes.cpp
@@ -0,0 +1,54 @@
+//===-- Passes.cpp - Target independent code generation passes ------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines interfaces to access the target independent code
+// generation passes provided by the LLVM backend.
+//
+//===---------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/RegAllocRegistry.h"
+#include "llvm/CodeGen/Passes.h"
+
+using namespace llvm;
+
+//===---------------------------------------------------------------------===//
+///
+/// RegisterRegAlloc class - Track the registration of register allocators.
+///
+//===---------------------------------------------------------------------===//
+MachinePassRegistry RegisterRegAlloc::Registry;
+
+
+//===---------------------------------------------------------------------===//
+///
+/// RegAlloc command line options.
+///
+//===---------------------------------------------------------------------===//
+static cl::opt<RegisterRegAlloc::FunctionPassCtor, false,
+ RegisterPassParser<RegisterRegAlloc> >
+RegAlloc("regalloc",
+ cl::init(&createLinearScanRegisterAllocator),
+ cl::desc("Register allocator to use: (default = linearscan)"));
+
+
+//===---------------------------------------------------------------------===//
+///
+/// createRegisterAllocator - choose the appropriate register allocator.
+///
+//===---------------------------------------------------------------------===//
+FunctionPass *llvm::createRegisterAllocator() {
+ RegisterRegAlloc::FunctionPassCtor Ctor = RegisterRegAlloc::getDefault();
+
+ if (!Ctor) {
+ Ctor = RegAlloc;
+ RegisterRegAlloc::setDefault(RegAlloc);
+ }
+
+ return Ctor();
+}