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Move static functions to .cpp file, reduce #includes, pass strings by

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const&.

llvm-svn: 23890
This commit is contained in:
Chris Lattner 2005-10-23 05:25:19 +00:00
parent ee05174fc0
commit 79ea8acebc
1 changed files with 7 additions and 68 deletions
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75
include/llvm/Target/SubtargetFeature.h
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@ -18,11 +18,9 @@
#ifndef LLVM_TARGET_SUBTARGETFEATURE_H
#define LLVM_TARGET_SUBTARGETFEATURE_H
#include <string>
#include <vector>
#include <iostream>
#include <cassert>
#include <iosfwd>
#include "llvm/Support/DataTypes.h"
namespace llvm {
@ -57,80 +55,21 @@ struct SubtargetFeatureKV {
///
class SubtargetFeatures {
private:
std::vector<std::string> Features; // Subtarget features as a vector
// Determine if a feature has a flag; '+' or '-'
static inline bool hasFlag(const std::string &Feature) {
assert(!Feature.empty() && "Empty string");
// Get first character
char Ch = Feature[0];
// Check if first character is '+' or '-' flag
return Ch == '+' || Ch =='-';
}
// Return true if enable flag; '+'.
static inline bool isEnabled(const std::string &Feature) {
assert(!Feature.empty() && "Empty string");
// Get first character
char Ch = Feature[0];
// Check if first character is '+' for enabled
return Ch == '+';
}
// Return a string with a prepended flag; '+' or '-'.
static inline std::string PrependFlag(const std::string &Feature,
bool IsEnabled) {
assert(!Feature.empty() && "Empty string");
if (hasFlag(Feature)) return Feature;
return std::string(IsEnabled ? "+" : "-") + Feature;
}
// Return string stripped of flag.
static inline std::string StripFlag(const std::string &Feature) {
return hasFlag(Feature) ? Feature.substr(1) : Feature;
}
/// Splits a string of comma separated items in to a vector of strings.
static void Split(std::vector<std::string> &V, const std::string &S);
/// Join a vector of strings into a string with a comma separating each
/// item.
static std::string Join(const std::vector<std::string> &V);
/// Convert a string to lowercase.
static std::string toLower(const std::string &S);
/// Find item in array using binary search.
static const SubtargetFeatureKV *Find(const std::string &S,
const SubtargetFeatureKV *A, size_t L);
public:
/// Ctor.
SubtargetFeatures(const std::string Initial = std::string()) {
// Break up string into separate features
Split(Features, Initial);
}
SubtargetFeatures(const std::string &Initial = std::string());
/// Features string accessors.
inline std::string getString() const { return Join(Features); }
void setString(const std::string &Initial) {
// Throw out old features
Features.clear();
// Break up string into separate features
Split(Features, toLower(Initial));
}
std::string getString() const;
void setString(const std::string &Initial);
/// Setting CPU string. Replaces previous setting. Setting to "" clears CPU.
void setCPU(std::string String) { Features[0] = toLower(String); }
///
void setCPU(const std::string &String);
/// Adding Features.
void AddFeature(const std::string &String, bool IsEnabled = true);
/// Display help for feature choices.
static void Help(const char *Heading,
const SubtargetFeatureKV *Table, size_t TableSize);
/// Parse feature string for quick usage.
static uint32_t Parse(const std::string &String,
const std::string &DefaultCPU,