1//===- llvm/ADT/SmallVector.cpp - 'Normally small' vectors ----------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file implements the SmallVector class. 11// 12//===----------------------------------------------------------------------===// 13 14#include "llvm/ADT/SmallVector.h" 15using namespace llvm; 16 17/// grow_pod - This is an implementation of the grow() method which only works 18/// on POD-like datatypes and is out of line to reduce code duplication. 19void SmallVectorBase::grow_pod(void *FirstEl, size_t MinSizeInBytes, 20 size_t TSize) { 21 size_t CurSizeBytes = size_in_bytes(); 22 size_t NewCapacityInBytes = 2 * capacity_in_bytes() + TSize; // Always grow. 23 if (NewCapacityInBytes < MinSizeInBytes) 24 NewCapacityInBytes = MinSizeInBytes; 25 26 void *NewElts; 27 if (BeginX == FirstEl) { 28 NewElts = malloc(NewCapacityInBytes); 29 30 // Copy the elements over. No need to run dtors on PODs. 31 memcpy(NewElts, this->BeginX, CurSizeBytes); 32 } else { 33 // If this wasn't grown from the inline copy, grow the allocated space. 34 NewElts = realloc(this->BeginX, NewCapacityInBytes); 35 } 36 37 this->EndX = (char*)NewElts+CurSizeBytes; 38 this->BeginX = NewElts; 39 this->CapacityX = (char*)this->BeginX + NewCapacityInBytes; 40} 41