From cc85da08f9fde9e81f2442c674a1d93c23357dc5 Mon Sep 17 00:00:00 2001
From: Tanya Lattner
To run the simple tests (i.e. those that do basic testing of -LLVM), using QMTest:
--% gmake -C llvm/test qmtest -- -
To run only the basic feature tests, QMTest supports the following -target:
--% gmake -C llvm/test Feature.t -- -
To run only the regression tests, QMTest supports the following -target:
--% gmake -C llvm/test Regression.t --
To run the comprehensive test suite (tests that compile and execute whole programs), run the llvm-test tests:
@@ -270,11 +241,6 @@ directory are the SPEC 95 and SPEC 2000 benchmark suites. The presence and location of these external programs is configured by the llvm-test configure script. -This directory contains the QMTest information files. Inside this directory -are QMTest administration files and the Python code that implements the LLVM -test and database classes.
The LLVM test suite is partially driven by DejaGNU and partially driven by GNU Make. Specifically, the Features and Regression tests -are all driven by DejaGNU (and optionally QMTest). The llvm-test +are all driven by DejaGNU. The llvm-test module is currently driven by a set of Makefiles.
The DejaGNU structure is very simple, but does require some @@ -355,78 +321,6 @@ machine. You can use * to match all targets. Here is an example of an
The Feature and Regression tests can also be run using QMTest.
- -The QMTest system needs to have several pieces of information available; -these pieces of configuration information are known collectively as the -"context" in QMTest parlance. Since the context for LLVM is relatively large, -the master Makefile in llvm/test sets it for you.
- -The LLVM database class makes the subdirectories of llvm/test a QMTest test -database. For each directory that contains tests driven by QMTest, it knows -what type of test the source file is and how to run it.
- -Hence, the QMTest namespace is essentially what you see in the Feature and -Regression directories, but there is some magic that the database class performs -(as described below).
- -The QMTest namespace is currently composed of the following tests and test -suites:
- -These are the feature tests found in the Feature directory. -They are broken up into the following categories:
- -Assembler/Disassembler tests. These tests verify that a piece of LLVM - assembly language can be assembled into bytecode and then disassembled - into the original assembly language code. It does this several times to - ensure that assembled output can be disassembled and disassembler output - can be assembled. It also verifies that the give assembly language file - can be assembled correctly.
Optimizer tests. These tests verify that two of the optimizer passes - completely optimize a program (i.e. after a single pass, they cannot - optimize a program any further).
Machine code tests. These tests verify that the LLVM assembly - language file can be translated into native assembly code.
C code tests. These tests verify that the specified LLVM assembly - code can be converted into C source code using the C backend.
The LLVM database class looks at every file in the Feature directory and -creates a fake test hierarchy containing -Feature.<testtype>.<testname>. So, if you add an LLVM -assembly language file to the Feature directory, it actually creates 5 new -tests: assembler/disassembler, assembler, optimizer, machine code, and C code. -
These are the regression tests. There is one suite for each - subdirectory of the Regression directory. If you add a new subdirectory - there, you will need to modify, at least, the RegressionMap - variable in QMTest/llvmdb.py so that QMTest knows how to run the - tests in the new subdirectory.
-The master Makefile in llvm/test is capable of running only the QMTest driven +
The master Makefile in llvm/test is capable of running only the DejaGNU driven tests. By default, it will run all of these tests.
-To run only the QMTest driven tests, run gmake qmtest at the -command line in llvm/tests. To run a specific qmtest, suffix the test name with -".t" when running gmake.
+To run only the DejaGNU driven tests, run gmake at the +command line in llvm/tests. To run a specific directory of tests, specify the TESTSUITE. +
-For example, to run the Regression.LLC tests, type -gmake Regression.LLC.t in llvm/tests.
+For example, to run the Regression tests, type +gmake TESTSUITE=Regression in llvm/tests.
Note that there are no Makefiles in llvm/test/Features and -llvm/test/Regression. You must use QMTest from the llvm/test +llvm/test/Regression. You must use DejaGNU from the llvm/test directory to run them.
To run the llvm-test suite, you need to use the following steps: @@ -547,7 +441,7 @@ output and standard error. You can redirect these results to a file if you choose.
Some tests are known to fail. Some are bugs that we have not fixed yet; -others are features that we haven't added yet (or may never add). In QMTest, +others are features that we haven't added yet (or may never add). In DejaGNU, the result for such tests will be XFAIL (eXpected FAILure). In this way, you can tell the difference between an expected and unexpected failure.