[docs] Delete tons of bad information in the requirements section of the

getting started guide.

Some highlights:
- I heard there was this Clang compiler that you could use for your
  host compiler. Not sure though.
- We no longer have a GCC frontend with weird build restrictions.
- Windows is doing a bit better than partially supported.
- We nuked everything to do with itanium.
- SPUs? Really?
- Xcode 2.5 and gcc 4.0.1 are really not a concern -- they don't work.
- OMG, we actually tried building LLVM on Alpha? Really?
- PowerPC works pretty well these days.

There is still a lot of stuff here I'm pretty dubious about, but I nuked
most of what was actively misleading, out of date, or patently wrong.
Some of it (mingw stuff especially) isn't really lacking, its just that
the comments here were actively wrong. Hopefully folks that know those
platforms can add back correct / modern information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202370 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 45 deletions

diff --git a/docs/GettingStarted.rst b/docs/GettingStarted.rst
index c2c3073d5d..ff524a8cde 100644
--- a/docs/GettingStarted.rst
+++ b/docs/GettingStarted.rst
@@ -113,75 +113,44 @@ software you will need.
 Hardware
 --------
 
-LLVM is known to work on the following platforms:
+LLVM is known to work on the following host platforms:
 
 +-----------------+----------------------+-------------------------+
 |OS               |  Arch                | Compilers               |
 +=================+======================+=========================+
 |AuroraUX         | x86\ :sup:`1`        | GCC                     |
 +-----------------+----------------------+-------------------------+
-|Linux            | x86\ :sup:`1`        | GCC                     |
+|Linux            | x86\ :sup:`1`        | GCC, Clang              |
 +-----------------+----------------------+-------------------------+
-|Linux            | amd64                | GCC                     |
+|Linux            | amd64                | GCC, Clang              |
 +-----------------+----------------------+-------------------------+
-|Linux            | ARM\ :sup:`13`       | GCC                     |
+|Linux            | ARM\ :sup:`4`        | GCC, Clang              |
++-----------------+----------------------+-------------------------+
+|Linux            | PowerPC              | GCC, Clang              |
 +-----------------+----------------------+-------------------------+
 |Solaris          | V9 (Ultrasparc)      | GCC                     |
 +-----------------+----------------------+-------------------------+
-|FreeBSD          | x86\ :sup:`1`        | GCC                     |
+|FreeBSD          | x86\ :sup:`1`        | GCC, Clang              |
 +-----------------+----------------------+-------------------------+
-|FreeBSD          | amd64                | GCC                     |
+|FreeBSD          | amd64                | GCC, Clang              |
 +-----------------+----------------------+-------------------------+
 |MacOS X\ :sup:`2`| PowerPC              | GCC                     |
 +-----------------+----------------------+-------------------------+
-|MacOS X\ :sup:`9`| x86                  | GCC                     |
+|MacOS X          | x86                  | GCC, Clang              |
 +-----------------+----------------------+-------------------------+
-|Cygwin/Win32     | x86\ :sup:`1, 8, 11` | GCC 3.4.X, binutils 2.20|
+|Cygwin/Win32     | x86\ :sup:`1, 3`     | GCC                     |
++-----------------+----------------------+-------------------------+
+|Windows          | x86\ :sup:`1`        | Visual Studio           |
++-----------------+----------------------+-------------------------+
+|Windows x64      | x86-64               | Visual Studio           |
 +-----------------+----------------------+-------------------------+
-
-LLVM has partial support for the following platforms:
-
-+-------------------+----------------------+-------------------------------------------+
-|OS                 |  Arch                | Compilers                                 |
-+===================+======================+===========================================+
-| Windows           | x86\ :sup:`1`        | Visual Studio 2000 or higher\ :sup:`4,5`  |
-+-------------------+----------------------+-------------------------------------------+
-| AIX\ :sup:`3,4`   | PowerPC              | GCC                                       |
-+-------------------+----------------------+-------------------------------------------+
-| Linux\ :sup:`3,5` | PowerPC              | GCC                                       |
-+-------------------+----------------------+-------------------------------------------+
-| Linux\ :sup:`7`   | Alpha                | GCC                                       |
-+-------------------+----------------------+-------------------------------------------+
-| Linux\ :sup:`7`   | Itanium (IA-64)      | GCC                                       |
-+-------------------+----------------------+-------------------------------------------+
-| HP-UX\ :sup:`7`   | Itanium (IA-64)      | HP aCC                                    |
-+-------------------+----------------------+-------------------------------------------+
-| Windows x64       | x86-64               | mingw-w64's GCC-4.5.x\ :sup:`12`          |
-+-------------------+----------------------+-------------------------------------------+
 
 .. note::
 
   #. Code generation supported for Pentium processors and up
   #. Code generation supported for 32-bit ABI only
-  #. No native code generation
-  #. Build is not complete: one or more tools do not link or function
-  #. The GCC-based C/C++ frontend does not build
-  #. The port is done using the MSYS shell.
-  #. Native code generation exists but is not complete.
-  #. Binutils 2.20 or later is required to build the assembler generated by LLVM properly.
-  #. Xcode 2.5 and gcc 4.0.1 (Apple Build 5370) will trip internal LLVM assert
-     messages when compiled for Release at optimization levels greater than 0
-     (i.e., ``-O1`` and higher).  Add ``OPTIMIZE_OPTION="-O0"`` to the build
-     command line if compiling for LLVM Release or bootstrapping the LLVM
-     toolchain.
-  #. For MSYS/MinGW on Windows, be sure to install the MSYS version of the perl
-     package, and be sure it appears in your path before any Windows-based
-     versions such as Strawberry Perl and ActivePerl, as these have
-     Windows-specifics that will cause the build to fail.
   #. To use LLVM modules on Win32-based system, you may configure LLVM
      with ``--enable-shared``.
-  #. To compile SPU backend, you need to add ``LDFLAGS=-Wl,--stack,16777216`` to
-     configure.
   #. MCJIT not working well pre-v7, old JIT engine not supported any more.
 
 Note that you will need about 1-3 GB of space for a full LLVM build in Debug