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sourcebuild.texi (Test directives): Clarify options to dg-skip-if.

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* doc/sourcebuild.texi (Test directives): Clarify options to
	dg-skip-if.

Co-Authored-By: Daniel Jacobowitz <dan@codesourcery.com>

From-SVN: r157154
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Janis Johnson 2010-03-01 23:29:18 +00:00 committed by Janis Johnson
parent 604b384dd4
commit 15e7a617a1
2 changed files with 51 additions and 7 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-03-01 Janis Johnson <janis187@us.ibm.com>
Daniel Jacobowitz <dan@codesourcery.com>
* doc/sourcebuild.texi (Test directives): Clarify options to
dg-skip-if.
2010-03-01 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* configure.ac (gcc_cv_as_cfi_directive) [i?86-*-solaris*]:

52
gcc/doc/sourcebuild.texi
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@ -1021,14 +1021,52 @@ the test
@end itemize
@item @{ dg-skip-if @var{comment} @{ @var{selector} @} @{ @var{include-opts} @} @{ @var{exclude-opts} @} @}
Skip the test if the test system is included in @var{selector} and if
each of the options in @var{include-opts} is in the set of options with
which the test would be compiled and if none of the options in
@var{exclude-opts} is in the set of options with which the test would be
compiled.
Arguments @var{include-opts} and @var{exclude-opts} are lists in which
each element is a string of zero or more GCC options.
Skip the test if all of the following conditions are met:
@itemize @bullet
@item the test system is included in @var{selector}
Use @samp{"*"} for an empty @var{include-opts} list and @samp{""} for
an empty @var{exclude-opts} list.
@item for at least one of the option strings in @var{include-opts},
every option from that string is in the set of options with which
the test would be compiled; use @samp{"*"} for an @var{include-opts} list
that matches any options
@item for each of the option strings in @var{exclude-opts}, at least one
option from that string is not in the set of options with which the test
would be compiled; use @samp{""} for an empty @var{exclude-opts} list
@end itemize
For example, to skip a test if option @code{-Os} is present:
@smallexample
/* @{ dg-skip-if "" @{ *-*-* @} @{ "-Os" @} @{ "" @} @} */
@end smallexample
To skip a test if both options @code{-O2} and @code{-g} are present:
@smallexample
/* @{ dg-skip-if "" @{ *-*-* @} @{ "-O2 -g" @} @{ "" @} @} */
@end smallexample
To skip a test if either @code{-O2} or @code{-O3} is present:
@smallexample
/* @{ dg-skip-if "" @{ *-*-* @} @{ "-O2" "-O3" @} @{ "" @} @} */
@end smallexample
To skip a test unless option @code{-OS} is present:
@smallexample
/* @{ dg-skip-if "" @{ *-*-* @} @{ "*" @} @{ "-Os" @} @} */
@end smallexample
To skip a test if either @code{-O2} or @code{-O3} is used with @code{-g}
but not if @code{-fpic} is also present:
@smallexample
/* @{ dg-skip-if "" @{ *-*-* @} @{ "-O2 -g" "-O3 -g" @} @{ "-fpic" @} @} */
@end smallexample
@item @{ dg-xfail-if @var{comment} @{ @var{selector} @} @{ @var{include-opts} @} @{ @var{exclude-opts} @} @}
Expect the test to fail if the conditions (which are the same as for