1f22ef01cSRoman Divacky //===- llvm/ADT/SmallVector.cpp - 'Normally small' vectors ----------------===// 2f22ef01cSRoman Divacky // 3f22ef01cSRoman Divacky // The LLVM Compiler Infrastructure 4f22ef01cSRoman Divacky // 5f22ef01cSRoman Divacky // This file is distributed under the University of Illinois Open Source 6f22ef01cSRoman Divacky // License. See LICENSE.TXT for details. 7f22ef01cSRoman Divacky // 8f22ef01cSRoman Divacky //===----------------------------------------------------------------------===// 9f22ef01cSRoman Divacky // 10f22ef01cSRoman Divacky // This file implements the SmallVector class. 11f22ef01cSRoman Divacky // 12f22ef01cSRoman Divacky //===----------------------------------------------------------------------===// 13f22ef01cSRoman Divacky 14f22ef01cSRoman Divacky #include "llvm/ADT/SmallVector.h" 15f22ef01cSRoman Divacky using namespace llvm; 16f22ef01cSRoman Divacky 17f22ef01cSRoman Divacky /// grow_pod - This is an implementation of the grow() method which only works 18f22ef01cSRoman Divacky /// on POD-like datatypes and is out of line to reduce code duplication. 19f22ef01cSRoman Divacky void SmallVectorBase::grow_pod(size_t MinSizeInBytes, size_t TSize) { 20f22ef01cSRoman Divacky size_t CurSizeBytes = size_in_bytes(); 21f22ef01cSRoman Divacky size_t NewCapacityInBytes = 2 * capacity_in_bytes(); 22f22ef01cSRoman Divacky if (NewCapacityInBytes < MinSizeInBytes) 23f22ef01cSRoman Divacky NewCapacityInBytes = MinSizeInBytes; 24f22ef01cSRoman Divacky void *NewElts = operator new(NewCapacityInBytes); 25f22ef01cSRoman Divacky 26f22ef01cSRoman Divacky // Copy the elements over. No need to run dtors on PODs. 27f22ef01cSRoman Divacky memcpy(NewElts, this->BeginX, CurSizeBytes); 28f22ef01cSRoman Divacky 29f22ef01cSRoman Divacky // If this wasn't grown from the inline copy, deallocate the old space. 30f22ef01cSRoman Divacky if (!this->isSmall()) 31f22ef01cSRoman Divacky operator delete(this->BeginX); 32f22ef01cSRoman Divacky 33f22ef01cSRoman Divacky this->EndX = (char*)NewElts+CurSizeBytes; 34f22ef01cSRoman Divacky this->BeginX = NewElts; 35f22ef01cSRoman Divacky this->CapacityX = (char*)this->BeginX + NewCapacityInBytes; 36f22ef01cSRoman Divacky } 37f22ef01cSRoman Divacky 38