mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 23:31:32 +00:00
81043ee5dc
string of features for that target. However LTO was using that string to pass into the "create target machine" stuff. That stuff needed the feature string to be in a particular form. In particular, it needed the CPU specified first and then the attributes. If there isn't a CPU specified, it required it to be blank -- e.g., ",+altivec". Yuck. Modify the getDefaultSubtargetFeatures method to be a non-static member function. For all attributes for a specific subtarget, it will add them in like normal. It will also take a CPU string so that it can satisfy this horrible syntax. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103451 91177308-0d34-0410-b5e6-96231b3b80d8
120 lines
4.0 KiB
C++
120 lines
4.0 KiB
C++
//===-- llvm/Target/SubtargetFeature.h - CPU characteristics ----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines and manages user or tool specified CPU characteristics.
|
|
// The intent is to be able to package specific features that should or should
|
|
// not be used on a specific target processor. A tool, such as llc, could, as
|
|
// as example, gather chip info from the command line, a long with features
|
|
// that should be used on that chip.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TARGET_SUBTARGETFEATURE_H
|
|
#define LLVM_TARGET_SUBTARGETFEATURE_H
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
#include <cstring>
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/System/DataTypes.h"
|
|
|
|
namespace llvm {
|
|
class raw_ostream;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// SubtargetFeatureKV - Used to provide key value pairs for feature and
|
|
/// CPU bit flags.
|
|
//
|
|
struct SubtargetFeatureKV {
|
|
const char *Key; // K-V key string
|
|
const char *Desc; // Help descriptor
|
|
uint32_t Value; // K-V integer value
|
|
uint32_t Implies; // K-V bit mask
|
|
|
|
// Compare routine for std binary search
|
|
bool operator<(const SubtargetFeatureKV &S) const {
|
|
return strcmp(Key, S.Key) < 0;
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// SubtargetInfoKV - Used to provide key value pairs for CPU and arbitrary
|
|
/// pointers.
|
|
//
|
|
struct SubtargetInfoKV {
|
|
const char *Key; // K-V key string
|
|
void *Value; // K-V pointer value
|
|
|
|
// Compare routine for std binary search
|
|
bool operator<(const SubtargetInfoKV &S) const {
|
|
return strcmp(Key, S.Key) < 0;
|
|
}
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// SubtargetFeatures - Manages the enabling and disabling of subtarget
|
|
/// specific features. Features are encoded as a string of the form
|
|
/// "cpu,+attr1,+attr2,-attr3,...,+attrN"
|
|
/// A comma separates each feature from the next (all lowercase.)
|
|
/// The first feature is always the CPU subtype (eg. pentiumm). If the CPU
|
|
/// value is "generic" then the CPU subtype should be generic for the target.
|
|
/// Each of the remaining features is prefixed with + or - indicating whether
|
|
/// that feature should be enabled or disabled contrary to the cpu
|
|
/// specification.
|
|
///
|
|
|
|
class SubtargetFeatures {
|
|
std::vector<std::string> Features; // Subtarget features as a vector
|
|
public:
|
|
explicit SubtargetFeatures(const std::string &Initial = std::string());
|
|
|
|
/// Features string accessors.
|
|
std::string getString() const;
|
|
void setString(const std::string &Initial);
|
|
|
|
/// Set the CPU string. Replaces previous setting. Setting to "" clears CPU.
|
|
void setCPU(const std::string &String);
|
|
|
|
/// Setting CPU string only if no string is set.
|
|
void setCPUIfNone(const std::string &String);
|
|
|
|
/// Returns current CPU string.
|
|
const std::string & getCPU() const;
|
|
|
|
/// Adding Features.
|
|
void AddFeature(const std::string &String, bool IsEnabled = true);
|
|
|
|
/// Get feature bits.
|
|
uint32_t getBits(const SubtargetFeatureKV *CPUTable,
|
|
size_t CPUTableSize,
|
|
const SubtargetFeatureKV *FeatureTable,
|
|
size_t FeatureTableSize);
|
|
|
|
/// Get info pointer
|
|
void *getInfo(const SubtargetInfoKV *Table, size_t TableSize);
|
|
|
|
/// Print feature string.
|
|
void print(raw_ostream &OS) const;
|
|
|
|
// Dump feature info.
|
|
void dump() const;
|
|
|
|
/// Retrieve a formatted string of the default features for the specified
|
|
/// target triple.
|
|
void getDefaultSubtargetFeatures(const std::string &CPU,
|
|
const Triple& Triple);
|
|
};
|
|
|
|
} // End namespace llvm
|
|
|
|
#endif
|