AllocToken.cpp File Reference

#include "llvm/Support/AllocToken.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/SipHash.h"

Go to the source code of this file.

Functions
static uint64_t	getStableHash (const AllocTokenMetadata &Metadata, uint64_t MaxTokens)
static uint64_t	getTypeFuncHash (const AllocTokenMetadata &Metadata, uint64_t MaxTokens, bool PointerSplit)
	Splits the Bits bits into: [pointer flag,] type name hash, function name hash.

Function Documentation

getStableHash()

uint64_t getStableHash ( const AllocTokenMetadata & Metadata, uint64_t MaxTokens )

static

Definition at line 53 of file AllocToken.cpp.

References llvm::getStableSipHash(), and uint64_t.

Referenced by llvm::getAllocToken().

getTypeFuncHash()

uint64_t getTypeFuncHash ( const AllocTokenMetadata & Metadata, uint64_t MaxTokens, bool PointerSplit )

static

Splits the Bits bits into: [pointer flag,] type name hash, function name hash.

The function name hash gets Bits / 2 bits. Bits is k if MaxTokens is 2^k-1 (e.g. SIZE_MAX, tokens in [0, MaxTokens]), or Log2(MaxTokens) otherwise. With pointer split, the MSB is the pointer flag.

Definition at line 62 of file AllocToken.cpp.

References llvm::countr_one(), llvm::getStableSipHash(), llvm::isMask_64(), llvm::Log2_64(), llvm::maskTrailingOnes(), and uint64_t.

Referenced by llvm::getAllocToken().