now that libsystem no longer uses SmallVector, we can move

SmallVectorBase::grow_pod out of line, finally satisfying PR3758.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91529 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 37 insertions, 0 deletions

diff --git a/lib/Support/SmallVector.cpp b/lib/Support/SmallVector.cpp
new file mode 100644
index 0000000000..6821382bb3
--- /dev/null
+++ b/lib/Support/SmallVector.cpp
@@ -0,0 +1,37 @@
+//===- llvm/ADT/SmallVector.cpp - 'Normally small' vectors ----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the SmallVector class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/SmallVector.h"
+using namespace llvm;
+
+/// grow_pod - This is an implementation of the grow() method which only works
+/// on POD-like datatypes and is out of line to reduce code duplication.
+void SmallVectorBase::grow_pod(size_t MinSizeInBytes, size_t TSize) {
+  size_t CurSizeBytes = size_in_bytes();
+  size_t NewCapacityInBytes = 2 * capacity_in_bytes();
+  if (NewCapacityInBytes < MinSizeInBytes)
+    NewCapacityInBytes = MinSizeInBytes;
+  void *NewElts = operator new(NewCapacityInBytes);
+  
+  // Copy the elements over.  No need to run dtors on PODs.
+  memcpy(NewElts, this->BeginX, CurSizeBytes);
+  
+  // If this wasn't grown from the inline copy, deallocate the old space.
+  if (!this->isSmall())
+    operator delete(this->BeginX);
+  
+  this->EndX = (char*)NewElts+CurSizeBytes;
+  this->BeginX = NewElts;
+  this->CapacityX = (char*)this->BeginX + NewCapacityInBytes;
+}
+