FoldingSet.cpp File Reference

#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/MathExtras.h"
#include <cassert>
#include <cstring>

Include dependency graph for FoldingSet.cpp:

Go to the source code of this file.

Functions
static FoldingSetImpl::Node *	GetNextPtr (void *NextInBucketPtr)
	Helper functions for FoldingSetImpl.
static void **	GetBucketPtr (void *NextInBucketPtr)
	testing.
static void **	GetBucketFor (unsigned Hash, void **Buckets, unsigned NumBuckets)
static void **	AllocateBuckets (unsigned NumBuckets)
	AllocateBuckets - Allocated initialized bucket memory.

---

Function Documentation

static void** AllocateBuckets

(

unsigned

NumBuckets

)

[static]

AllocateBuckets - Allocated initialized bucket memory.

Definition at line 215 of file FoldingSet.cpp.

References llvm::LibFunc::calloc.

Referenced by llvm::FoldingSetImpl::FoldingSetImpl().

static void** GetBucketFor	(	unsigned	Hash,
		void **	Buckets,
		unsigned	NumBuckets
	)		[static]

GetBucketFor - Hash the specified node ID and return the hash bucket for the specified ID.

Definition at line 208 of file FoldingSet.cpp.

Referenced by llvm::FoldingSetImpl::FindNodeOrInsertPos(), and llvm::FoldingSetImpl::InsertNode().

static void** GetBucketPtr

(

void *

NextInBucketPtr

)

[static]

testing.

Definition at line 200 of file FoldingSet.cpp.

Referenced by llvm::FoldingSetIteratorImpl::advance(), and llvm::FoldingSetImpl::RemoveNode().

static FoldingSetImpl::Node* GetNextPtr

(

void *

NextInBucketPtr

)

[static]

Helper functions for FoldingSetImpl.

GetNextPtr - In order to save space, each bucket is a singly-linked-list. In order to make deletion more efficient, we make the list circular, so we can delete a node without computing its hash. The problem with this is that the start of the hash buckets are not Nodes. If NextInBucketPtr is a bucket pointer, this method returns null: use GetBucketPtr when this happens.

Definition at line 190 of file FoldingSet.cpp.

Referenced by llvm::FoldingSetIteratorImpl::advance(), llvm::FoldingSetImpl::FindNodeOrInsertPos(), llvm::FoldingSetBucketIteratorImpl::FoldingSetBucketIteratorImpl(), llvm::FoldingSetIteratorImpl::FoldingSetIteratorImpl(), and llvm::FoldingSetImpl::RemoveNode().