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Make the copy member of StringRef/ArrayRef generic wrt allocators.

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Doesn't make sense to restrict this to BumpPtrAllocator. While there
replace an explicit loop with std::equal. Some standard libraries know
how to compile this down to a ::memcmp call if possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206615 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2014-04-18 16:36:15 +00:00
parent 7b4b261611
commit 98b539ae65
3 changed files with 9 additions and 13 deletions
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14
include/llvm/ADT/ArrayRef.h
View File

@ -12,7 +12,6 @@
#include "llvm/ADT/None.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Allocator.h"
#include <vector>
namespace llvm {
@ -121,9 +120,9 @@ namespace llvm {
return Data[Length-1];
}
// copy - Allocate copy in BumpPtrAllocator and return ArrayRef<T> to it.
ArrayRef<T> copy(BumpPtrAllocator &Allocator) {
T *Buff = Allocator.Allocate<T>(Length);
// copy - Allocate copy in Allocator and return ArrayRef<T> to it.
template <typename Allocator> ArrayRef<T> copy(Allocator &A) {
T *Buff = A.template Allocate<T>(Length);
std::copy(begin(), end(), Buff);
return ArrayRef<T>(Buff, Length);
}
@ -132,10 +131,7 @@ namespace llvm {
bool equals(ArrayRef RHS) const {
if (Length != RHS.Length)
return false;
for (size_type i = 0; i != Length; i++)
if (Data[i] != RHS.Data[i])
return false;
return true;
return std::equal(begin(), end(), RHS.begin());
}
/// slice(n) - Chop off the first N elements of the array.
@ -221,7 +217,7 @@ namespace llvm {
/// Construct an MutableArrayRef from a C array.
template <size_t N>
/*implicit*/ MutableArrayRef(T (&Arr)[N])
/*implicit*/ LLVM_CONSTEXPR MutableArrayRef(T (&Arr)[N])
: ArrayRef<T>(Arr) {}
T *data() const { return const_cast<T*>(ArrayRef<T>::data()); }

7
include/llvm/ADT/StringRef.h
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@ -10,7 +10,6 @@
#ifndef LLVM_ADT_STRINGREF_H
#define LLVM_ADT_STRINGREF_H
#include "llvm/Support/Allocator.h"
#include <algorithm>
#include <cassert>
#include <cstring>
@ -124,9 +123,9 @@ namespace llvm {
return Data[Length-1];
}
// copy - Allocate copy in BumpPtrAllocator and return StringRef to it.
StringRef copy(BumpPtrAllocator &Allocator) {
char *S = Allocator.Allocate<char>(Length);
// copy - Allocate copy in Allocator and return StringRef to it.
template <typename Allocator> StringRef copy(Allocator &A) {
char *S = A.template Allocate<char>(Length);
std::copy(begin(), end(), S);
return StringRef(S, Length);
}

1
include/llvm/CodeGen/MachineValueType.h
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@ -16,6 +16,7 @@
#define LLVM_CODEGEN_MACHINEVALUETYPE_H
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
namespace llvm {