Merge google-perftools r109 (the current contents of third_party/tcmalloc/vendor)

third_party/tcmalloc/chromium/src/base/arm_instruction_set_select.h

+// Copyright (c) 2011, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: Alexander Levitskiy
+//
+// Generalizes the plethora of ARM flavors available to an easier to manage set
+// Defs reference is at https://wiki.edubuntu.org/ARM/Thumb2PortingHowto
+
+#ifndef ARM_INSTRUCTION_SET_SELECT_H_
+#define ARM_INSTRUCTION_SET_SELECT_H_
+
+#if defined(__ARM_ARCH_7__) || \
+    defined(__ARM_ARCH_7R__) || \
+    defined(__ARM_ARCH_7A__)
+# define ARMV7 1
+#endif
+
+#if defined(ARMV7) || \
+    defined(__ARM_ARCH_6__) || \
+    defined(__ARM_ARCH_6J__) || \
+    defined(__ARM_ARCH_6K__) || \
+    defined(__ARM_ARCH_6Z__) || \
+    defined(__ARM_ARCH_6T2__) || \
+    defined(__ARM_ARCH_6ZK__)
+# define ARMV6 1
+#endif
+
+#if defined(ARMV6) || \
+    defined(__ARM_ARCH_5T__) || \
+    defined(__ARM_ARCH_5E__) || \
+    defined(__ARM_ARCH_5TE__) || \
+    defined(__ARM_ARCH_5TEJ__)
+# define ARMV5 1
+#endif
+
+#if defined(ARMV5) || \
+    defined(__ARM_ARCH_4__) || \
+    defined(__ARM_ARCH_4T__)
+# define ARMV4 1
+#endif
+
+#if defined(ARMV4) || \
+    defined(__ARM_ARCH_3__) || \
+    defined(__ARM_ARCH_3M__)
+# define ARMV3 1
+#endif
+
+#if defined(ARMV3) || \
+    defined(__ARM_ARCH_2__)
+# define ARMV2 1
+#endif
+
+#endif  // ARM_INSTRUCTION_SET_SELECT_H_