Imported gcc-4.4.3

[msp430-gcc.git] / gcc / testsuite / consistency.vlad / README

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-  This directory contains tests and scripts for consistency checking
-compilers.  They could be used for consistency checking different
-C/C++ compiler for one platform or C/C++ compilers for different
-platforms.
-
-  For example, to check the consistency, you could type
-
-   make check-consistency RUNTESTFLAGS='BASE_COMPILER=i960-97r2 CONSISTENCY_OPTIONS="-O2 -fvtable-thunks -mno-strict-align -fno-rtti -fcheck-new -mcall-i960-old -mlittle-endian" NO_LONG_DOUBLE=1 NO_LIBGLOSS_LIBRARY_OPTIONS=1'
-
-  In this example, DEJAGNU driver vlad.exp will process all C/C++
-tests in all subdirectories (e.g. layout) started with lower case
-letter.  C tests (with suffixes .c) will be compiled by C compiler
-only.  C++ tests will be compiled by C and C++ compilers.  It is
-supposed that each test outputs the result which is saved in temp_dir
-as
-   <basename of the test>.out
-or
-   <basename of the test>.out++
-
-correspondingly for C compiler and C++ compiler.  For example, there
-will be two output files
-
-   `align-double.out' and `align-double.out++'
-
-for test `align-double.c'.
-
-  After this if there is subdirectory <BASE_COMPILER>-results
-(`i960-97r2-results' in our example) and there is corresponding saved
-output file for the base compiler the the files are compared in order
-to check consistency.
-
-  To create the base for future comparisons of output files, you
-should create the directory and move output files from the temporary
-directory into the created directory.
-
-The test script file has the following parameters
-
- 1. BASE_COMPILER.  The variable must be defined for work the script
-    properly.
-
- 2. CONSISTENCY_OPTIONS.  The options which will be used for
-    compilations.  The default value is "-O2".
-
- 3. NO_LONG_DOUBLE.  If the variable value is not zero, the tests
-    which contain long double are expected to be fail.
-
- 4. NO_LIBGLOSS_LIBRARY_OPTIONS.  If the variable value is not zero,
-    the tests are compiled without standard dejagnu libgloss library
-    paths.
-
-  Currently, there is directory `layout' for checking allocation
-parameters of C/C++ compiler and subdirectory i960-97r2 which contains
-the test results for 97r2 i960-vxworks C/C++ compiler.
-
-  You can create other consistency tests.  Simply, create a directory
-started with lower case letter, place the tests and create the
-subdirectory with the test results for a base compiler.  If you need
-to compile tests in a directory with a wrap file simply place the file
-name (e.g. _dummy_stab.S) in file WRAP_FILE in the test directory.
-
-  The tests will be only compiled (and the test results will not be
-compared) if you place <basename of the test>.conly in the directory
-of the test.  You can use own driver for checking consistency.  To
-make this, place the TCL script with name <basename of the test>.cexp.
-
-Vladimir Makarov <vmakarov@cygnus.com>