[Docs] Modernize references to macOS

Summary:
This updates all places in documentation that refer to "Mac OS X", "OS X", etc.
to instead use the modern name "macOS" when no specific version number is
mentioned.

If a specific version is mentioned, this attempts to use the OS name at the time
of that version:

* Mac OS X for 10.0 - 10.7
* OS X for 10.8 - 10.11
* macOS for 10.12 - present

Reviewers: JDevlieghere

Subscribers: mgorny, christof, arphaman, cfe-commits, lldb-commits, libcxx-commits, llvm-commits

Tags: #clang, #lldb, #libc, #llvm

Differential Revision: https://reviews.llvm.org/D62654

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@362113 91177308-0d34-0410-b5e6-96231b3b80d8

docs/AddressSanitizer.rst

@@ -119,7 +119,7 @@ force disabled by setting ``ASAN_OPTIONS=symbolize=0``):
         #1 0x7f7ddabcac4d in __libc_start_main ??:0
     ...
 
-Note that on OS X you may need to run ``dsymutil`` on your binary to have the
+Note that on macOS you may need to run ``dsymutil`` on your binary to have the
 file\:line info in the AddressSanitizer reports.
 
 Additional Checks
@@ -134,14 +134,14 @@ globals defined in another translation unit. To enable this check at runtime,
 you should set environment variable
 ``ASAN_OPTIONS=check_initialization_order=1``.
 
-Note that this option is not supported on OS X.
+Note that this option is not supported on macOS.
 
 Memory leak detection
 ---------------------
 
 For more information on leak detector in AddressSanitizer, see
 :doc:`LeakSanitizer`. The leak detection is turned on by default on Linux,
-and can be enabled using ``ASAN_OPTIONS=detect_leaks=1`` on OS X;
+and can be enabled using ``ASAN_OPTIONS=detect_leaks=1`` on macOS;
 however, it is not yet supported on other platforms.
 
 Issue Suppression
@@ -273,7 +273,7 @@ Supported Platforms
 AddressSanitizer is supported on:
 
 * Linux i386/x86\_64 (tested on Ubuntu 12.04)
-* OS X 10.7 - 10.11 (i386/x86\_64)
+* macOS 10.7 - 10.11 (i386/x86\_64)
 * iOS Simulator
 * Android ARM
 * NetBSD i386/x86\_64

docs/AutomaticReferenceCounting.rst

@@ -268,7 +268,7 @@ ARC's semantics and restrictions.
   * There must be reliable conventions for whether and when "ownership" is
     passed between caller and callee, for both arguments and return values.
     Objective-C methods follow such a convention very reliably, at least for
-    system libraries on Mac OS X, and functions always pass objects at +0.  The
+    system libraries on macOS, and functions always pass objects at +0.  The
     C-based APIs for Core Foundation objects, on the other hand, have much more
     varied transfer semantics.
 

docs/ClangCommandLineReference.rst

@@ -2218,7 +2218,7 @@ Generate branches with extended addressability, usually via indirect jumps.
 
 .. option:: -mmacosx-version-min=<arg>, -mmacos-version-min=<arg>
 
-Set Mac OS X deployment target
+Set macOS deployment target
 
 .. option:: -mmcu=<arg>
 

docs/CommandGuide/clang.rst

@@ -316,7 +316,7 @@ number of cross compilers, or may only support a native target.
 
 .. option:: -mmacosx-version-min=<version>
 
-  When building for Mac OS X, specify the minimum version supported by your
+  When building for macOS, specify the minimum version supported by your
   application.
 
 .. option:: -miphoneos-version-min

docs/LeakSanitizer.rst

@@ -17,7 +17,7 @@ detection phase.
 Usage
 =====
 
-LeakSanitizer is supported on x86\_64 Linux and OS X. In order to use it,
+LeakSanitizer is supported on x86\_64 Linux and macOS. In order to use it,
 simply build your program with :doc:`AddressSanitizer`:
 
 .. code-block:: console

docs/Modules.rst

@@ -360,7 +360,7 @@ The *module-id* should consist of only a single *identifier*, which provides the
 
 The ``explicit`` qualifier can only be applied to a submodule, i.e., a module that is nested within another module. The contents of explicit submodules are only made available when the submodule itself was explicitly named in an import declaration or was re-exported from an imported module.
 
-The ``framework`` qualifier specifies that this module corresponds to a Darwin-style framework. A Darwin-style framework (used primarily on Mac OS X and iOS) is contained entirely in directory ``Name.framework``, where ``Name`` is the name of the framework (and, therefore, the name of the module). That directory has the following layout:
+The ``framework`` qualifier specifies that this module corresponds to a Darwin-style framework. A Darwin-style framework (used primarily on macOS and iOS) is contained entirely in directory ``Name.framework``, where ``Name`` is the name of the framework (and, therefore, the name of the module). That directory has the following layout:
 
 .. parsed-literal::
 

docs/SafeStack.rst

@@ -126,7 +126,7 @@ and link command lines.
 Supported Platforms
 -------------------
 
-SafeStack was tested on Linux, NetBSD, FreeBSD and MacOSX.
+SafeStack was tested on Linux, NetBSD, FreeBSD and macOS.
 
 Low-level API
 -------------

docs/UndefinedBehaviorSanitizer.rst

@@ -295,7 +295,7 @@ UndefinedBehaviorSanitizer is supported on the following operating systems:
 * NetBSD
 * FreeBSD
 * OpenBSD
-* OS X 10.6 onwards
+* macOS
 * Windows
 
 The runtime library is relatively portable and platform independent. If the OS

docs/UsersManual.rst

@@ -1006,7 +1006,7 @@ on-disk cache that contains the vital information necessary to reduce
 some of the work needed to process a corresponding header file. While
 details of precompiled headers vary between compilers, precompiled
 headers have been shown to be highly effective at speeding up program
-compilation on systems with very large system headers (e.g., Mac OS X).
+compilation on systems with very large system headers (e.g., macOS).
 
 Generating a PCH File
 ^^^^^^^^^^^^^^^^^^^^^
@@ -2746,7 +2746,7 @@ X86
 ^^^
 
 The support for X86 (both 32-bit and 64-bit) is considered stable on
-Darwin (Mac OS X), Linux, FreeBSD, and Dragonfly BSD: it has been tested
+Darwin (macOS), Linux, FreeBSD, and Dragonfly BSD: it has been tested
 to correctly compile many large C, C++, Objective-C, and Objective-C++
 codebases.
 
@@ -2801,8 +2801,8 @@ backend.
 Operating System Features and Limitations
 -----------------------------------------
 
-Darwin (Mac OS X)
-^^^^^^^^^^^^^^^^^
+Darwin (macOS)
+^^^^^^^^^^^^^^
 
 Thread Sanitizer is not supported.
 

docs/analyzer/checkers.rst

@@ -778,7 +778,7 @@ Check for null pointers being passed as arguments to C string functions:
 
 osx
 ^^^
-OS X checkers.
+macOS checkers.
 
 osx.API (C)
 """""""""""

docs/analyzer/developer-docs/DebugChecks.rst

@@ -15,7 +15,7 @@ General Analysis Dumpers
 
 These checkers are used to dump the results of various infrastructural analyses
 to stderr. Some checkers also have "view" variants, which will display a graph
-using a 'dot' format viewer (such as Graphviz on OS X) instead.
+using a 'dot' format viewer (such as Graphviz on macOS) instead.
 
 - debug.DumpCallGraph, debug.ViewCallGraph: Show the call graph generated for
   the current translation unit. This is used to determine the order in which to