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Clean up, bring up-to-date and apply consistent formatting.

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This document is a long-time pet peeve :-) More fixes to come.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169115 91177308-0d34-0410-b5e6-96231b3b80d8
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Eli Bendersky 2012-12-03 04:10:58 +00:00
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docs/TestingGuide.rst
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@ -46,23 +46,15 @@ Regression tests
----------------
The regression tests are small pieces of code that test a specific
feature of LLVM or trigger a specific bug in LLVM. They are usually
written in LLVM assembly language, but can be written in other languages
if the test targets a particular language front end (and the appropriate
``--with-llvmgcc`` options were used at ``configure`` time of the
``llvm`` module). These tests are driven by the 'lit' testing tool,
which is part of LLVM.
These code fragments are not complete programs. The code generated from
them is never executed to determine correct behavior.
These code fragment tests are located in the ``llvm/test`` directory.
feature of LLVM or trigger a specific bug in LLVM. The language they are
written in depends on the part of LLVM being tested. These tests are driven by
the :doc:`Lit <CommandGuide/lit>` testing tool (which is part of LLVM), and
are located in the ``llvm/test`` directory.
Typically when a bug is found in LLVM, a regression test containing just
enough code to reproduce the problem should be written and placed
somewhere underneath this directory. In most cases, this will be a small
piece of LLVM assembly language code, often distilled from an actual
application or benchmark.
somewhere underneath this directory. For example, it can be a small
piece of LLVM IR distilled from an actual application or benchmark.
``test-suite``
--------------
@ -100,8 +92,8 @@ Quick start
The tests are located in two separate Subversion modules. The
regressions tests are in the main "llvm" module under the directory
``llvm/test`` (so you get these tests for free with the main llvm tree).
Use "make check-all" to run the regression tests after building LLVM.
``llvm/test`` (so you get these tests for free with the main LLVM tree).
Use ``make check-all`` to run the regression tests after building LLVM.
The more comprehensive test suite that includes whole programs in C and C++
is in the ``test-suite`` module. See :ref:`test-suite Quickstart
@ -110,38 +102,37 @@ is in the ``test-suite`` module. See :ref:`test-suite Quickstart
Regression tests
----------------
To run all of the LLVM regression tests, use master Makefile in the
``llvm/test`` directory:
To run all of the LLVM regression tests, use the master Makefile in the
``llvm/test`` directory. LLVM Makefiles require GNU Make (read the :doc:`LLVM
Makefile Guide <MakefileGuide>` for more details):
.. code-block:: bash
% gmake -C llvm/test
% make -C llvm/test
or
or:
.. code-block:: bash
% gmake check
% make check
If you have `Clang <http://clang.llvm.org/>`_ checked out and built, you
can run the LLVM and Clang tests simultaneously using:
or
.. code-block:: bash
% gmake check-all
% make check-all
To run the tests with Valgrind (Memcheck by default), just append
``VG=1`` to the commands above, e.g.:
.. code-block:: bash
% gmake check VG=1
% make check VG=1
To run individual tests or subsets of tests, you can use the 'llvm-lit'
To run individual tests or subsets of tests, you can use the ``llvm-lit``
script which is built as part of LLVM. For example, to run the
'Integer/BitPacked.ll' test by itself you can run:
``Integer/BitPacked.ll`` test by itself you can run:
.. code-block:: bash
@ -153,8 +144,8 @@ or to run all of the ARM CodeGen tests:
% llvm-lit ~/llvm/test/CodeGen/ARM
For more information on using the 'lit' tool, see 'llvm-lit --help' or
the 'lit' man page.
For more information on using the :program:`lit` tool, see ``llvm-lit --help``
or the :doc:`lit man page <CommandGuide/lit>`.
Debugging Information tests
---------------------------
@ -172,7 +163,7 @@ These tests are already set up to run as part of clang regression tests.
Regression test structure
=========================
The LLVM regression tests are driven by 'lit' and are located in the
The LLVM regression tests are driven by :program:`lit` and are located in the
``llvm/test`` directory.
This directory contains a large array of small tests that exercise