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llvm-mirror/include/llvm/MC/MCCodeGenInfo.h
Paul Robinson 0ef8735f0a Teach ISel not to optimize 'optnone' functions (revised).
Improvements over r195317:
- Set/restore EnableFastISel flag instead of just running FastISel within
  SelectAllBasicBlocks; the flag is checked in various places, and
  FastISel won't run properly if those places don't do the right thing.
- Test looks for normal ISel versus FastISel behavior, and not
  something more subtle that doesn't work everywhere.

Based on work by Andrea Di Biagio.

llvm-svn: 195491
2013-11-22 19:11:24 +00:00

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1.5 KiB
C++

//===-- llvm/MC/MCCodeGenInfo.h - Target CodeGen Info -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tracks information about the target which can affect codegen,
// asm parsing, and asm printing. For example, relocation model.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_MCCODEGENINFO_H
#define LLVM_MC_MCCODEGENINFO_H
#include "llvm/Support/CodeGen.h"
namespace llvm {
class MCCodeGenInfo {
/// RelocationModel - Relocation model: static, pic, etc.
///
Reloc::Model RelocationModel;
/// CMModel - Code model.
///
CodeModel::Model CMModel;
/// OptLevel - Optimization level.
///
CodeGenOpt::Level OptLevel;
public:
void InitMCCodeGenInfo(Reloc::Model RM = Reloc::Default,
CodeModel::Model CM = CodeModel::Default,
CodeGenOpt::Level OL = CodeGenOpt::Default);
Reloc::Model getRelocationModel() const { return RelocationModel; }
CodeModel::Model getCodeModel() const { return CMModel; }
CodeGenOpt::Level getOptLevel() const { return OptLevel; }
// Allow overriding OptLevel on a per-function basis.
void setOptLevel(CodeGenOpt::Level Level) { OptLevel = Level; }
};
} // namespace llvm
#endif