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50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
//===-- Passes.cpp - Target independent code generation passes -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines interfaces to access the target independent code
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// generation passes provided by the LLVM backend.
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//
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//===---------------------------------------------------------------------===//
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#include "llvm/CodeGen/Passes.h"
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#include "Support/CommandLine.h"
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namespace llvm {
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namespace {
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enum RegAllocName { simple, local, linearscan };
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cl::opt<RegAllocName>
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RegAlloc("regalloc",
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cl::desc("Register allocator to use: (default = simple)"),
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cl::Prefix,
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cl::values(clEnumVal(simple, " simple register allocator"),
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clEnumVal(local, " local register allocator"),
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clEnumVal(linearscan, " linear-scan global register allocator"),
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0),
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cl::init(local));
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}
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FunctionPass *createRegisterAllocator()
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{
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switch (RegAlloc) {
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case simple:
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return createSimpleRegisterAllocator();
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case local:
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return createLocalRegisterAllocator();
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case linearscan:
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return createLinearScanRegisterAllocator();
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default:
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assert(0 && "no register allocator selected");
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return 0; // not reached
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}
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}
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} // End llvm namespace
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