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Final polish on machine pass registries.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29471 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2006-08-02 12:30:23 +00:00
parent 9b9528d8f6
commit eb577ba3b8
10 changed files with 98 additions and 229 deletions
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35
lib/CodeGen/Passes.cpp
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@ -12,31 +12,46 @@
//
//===---------------------------------------------------------------------===//
#include "llvm/CodeGen/MachinePassRegistry.h"
#include "llvm/CodeGen/RegAllocRegistry.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Support/CommandLine.h"
#include <iostream>
using namespace llvm;
//===---------------------------------------------------------------------===//
///
/// RegisterRegAlloc class - Track the registration of register allocators.
///
//===---------------------------------------------------------------------===//
MachinePassRegistry RegisterRegAlloc::Registry;
//===---------------------------------------------------------------------===//
///
/// RegAlloc command line options.
///
//===---------------------------------------------------------------------===//
namespace {
cl::opt<const char *, false, RegisterPassParser<RegisterRegAlloc> >
cl::opt<RegisterRegAlloc::FunctionPassCtor, false,
RegisterPassParser<RegisterRegAlloc> >
RegAlloc("regalloc",
cl::init("linearscan"),
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 = RegisterRegAlloc::FindCtor(RegAlloc);
assert(Ctor && "No register allocator found");
if (!Ctor) Ctor = RegisterRegAlloc::FirstCtor();
RegisterRegAlloc::setDefault(Ctor);
Ctor = RegAlloc;
RegisterRegAlloc::setDefault(RegAlloc);
}
assert(Ctor && "No register allocator found");
return Ctor();
}