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| author | Tamar Christina <tamar.christina@arm.com> | 2018-10-01 13:06:53 +0000 |
|---|---|---|
| committer | Tamar Christina <tnfchris@gcc.gnu.org> | 2018-10-01 13:06:53 +0000 |
| commit | 03ced4ab9f729cc4d5854439f136d84d1343b32d (patch) | |
| tree | a8052683671f592c9b2edb6f58685170c945b8bd /gcc/doc/tm.texi | |
| parent | c98f502f0ab9e51357665d7afcad724feee6088b (diff) | |
| download | gcc-03ced4ab9f729cc4d5854439f136d84d1343b32d.zip gcc-03ced4ab9f729cc4d5854439f136d84d1343b32d.tar.gz gcc-03ced4ab9f729cc4d5854439f136d84d1343b32d.tar.bz2 | |
Allow back-ends to be able to do custom validations on params.
This patch adds the ability for backends to add custom constrains to the param
values by defining a new hook option_validate_param.
This hook is invoked on every set_param_value which allows the back-end to
ensure that the parameters are always within it's desired state.
gcc/
* params.c (set_param_value):
Add index of parameter being validated.
* common/common-target.def (option_validate_param): New.
* common/common-targhooks.h (default_option_validate_param): New.
* common/common-targhooks.c (default_option_validate_param): New.
* doc/tm.texi.in (TARGET_OPTION_VALIDATE_PARAM): New.
* doc/tm.texi: Regenerate.
From-SVN: r264755
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index b00e4b6..83965b2 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -753,6 +753,10 @@ Set target-dependent initial values of fields in @var{opts}. Set target-dependent default values for @option{--param} settings, using calls to @code{set_default_param_value}. @end deftypefn +@deftypefn {Common Target Hook} bool TARGET_OPTION_VALIDATE_PARAM (int, @var{int}) +Validate target-dependent value for @option{--param} settings, using calls to @code{set_param_value}. +@end deftypefn + @defmac SWITCHABLE_TARGET Some targets need to switch between substantially different subtargets during compilation. For example, the MIPS target has one subtarget for |