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llvm-mirror/lib/CodeGen/Passes.cpp
2003-11-11 22:41:34 +00:00

47 lines
1.3 KiB
C++

//===-- Passes.cpp - Target independent code generation passes -*- 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 defines interfaces to access the target independent code
// generation passes provided by the LLVM backend.
//
//===---------------------------------------------------------------------===//
#include "llvm/CodeGen/Passes.h"
#include "Support/CommandLine.h"
namespace llvm {
namespace {
enum RegAllocName { simple, local };
cl::opt<RegAllocName>
RegAlloc("regalloc",
cl::desc("Register allocator to use: (default = simple)"),
cl::Prefix,
cl::values(clEnumVal(simple, " simple register allocator"),
clEnumVal(local, " local register allocator"),
0),
cl::init(local));
}
FunctionPass *createRegisterAllocator()
{
switch (RegAlloc) {
case simple:
return createSimpleRegisterAllocator();
case local:
return createLocalRegisterAllocator();
default:
assert(0 && "no register allocator selected");
return 0; // not reached
}
}
} // End llvm namespace