Imported Upstream version 5.18.0.225

Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5

external/llvm/lib/Support/SmallVector.cpp

@@ -0,0 +1,44 @@
+//===- 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(void *FirstEl, size_t MinSizeInBytes,
+                               size_t TSize) {
+  size_t CurSizeBytes = size_in_bytes();
+  size_t NewCapacityInBytes = 2 * capacity_in_bytes() + TSize; // Always grow.
+  if (NewCapacityInBytes < MinSizeInBytes)
+    NewCapacityInBytes = MinSizeInBytes;
+
+  void *NewElts;
+  if (BeginX == FirstEl) {
+    NewElts = malloc(NewCapacityInBytes);
+    if (NewElts == nullptr)
+      report_bad_alloc_error("Allocation of SmallVector element failed.");
+
+    // Copy the elements over.  No need to run dtors on PODs.
+    memcpy(NewElts, this->BeginX, CurSizeBytes);
+  } else {
+    // If this wasn't grown from the inline copy, grow the allocated space.
+    NewElts = realloc(this->BeginX, NewCapacityInBytes);
+    if (NewElts == nullptr)
+      report_bad_alloc_error("Reallocation of SmallVector element failed.");
+  }
+
+  this->EndX = (char*)NewElts+CurSizeBytes;
+  this->BeginX = NewElts;
+  this->CapacityX = (char*)this->BeginX + NewCapacityInBytes;
+}