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| author | James Greenhalgh <james.greenhalgh@arm.com> | 2016-11-23 17:14:07 +0000 |
|---|---|---|
| committer | James Greenhalgh <jgreenhalgh@gcc.gnu.org> | 2016-11-23 17:14:07 +0000 |
| commit | 42e02b207fdf71f09020eef2bba3e25f5f57a946 (patch) | |
| tree | c7ee3fc4890a00af4ef7dfacfa95f70282c9cdd3 /gcc/doc | |
| parent | aecc521b46ac451c0547d8693bfcfabfb3832401 (diff) | |
| download | gcc-42e02b207fdf71f09020eef2bba3e25f5f57a946.zip gcc-42e02b207fdf71f09020eef2bba3e25f5f57a946.tar.gz gcc-42e02b207fdf71f09020eef2bba3e25f5f57a946.tar.bz2 | |
[Patch 1/17] Add a new target hook for describing excess precision intentions
gcc/
* target.def (excess_precision): New hook.
* target.h (flt_eval_method): New.
(excess_precision_type): Likewise.
* targhooks.c (default_excess_precision): New.
* targhooks.h (default_excess_precision): New.
* doc/tm.texi.in (TARGET_C_EXCESS_PRECISION): New.
* doc/tm.texi: Regenerate.
From-SVN: r242771
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 4 | ||||
| -rw-r--r-- | gcc/doc/tm.texi.in | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 7bf09d1..144e63f 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -947,6 +947,10 @@ sign-extend the result to 64 bits. On such machines, set Do not define this macro if it would never modify @var{m}. @end defmac +@deftypefn {Target Hook} {enum flt_eval_method} TARGET_C_EXCESS_PRECISION (enum excess_precision_type @var{type}) +Return a value, with the same meaning as @code{FLT_EVAL_METHOD} C that describes which excess precision should be applied. @var{type} is either @code{EXCESS_PRECISION_TYPE_IMPLICIT}, @code{EXCESS_PRECISION_TYPE_FAST}, or @code{EXCESS_PRECISION_TYPE_STANDARD}. For @code{EXCESS_PRECISION_TYPE_IMPLICIT}, the target should return which precision and range operations will be implictly evaluated in regardless of the excess precision explicitly added. For @code{EXCESS_PRECISION_TYPE_STANDARD} and @code{EXCESS_PRECISION_TYPE_FAST}, the target should return the explicit excess precision that should be added depending on the value set for @option{-fexcess-precision=@r{[}standard@r{|}fast@r{]}}. +@end deftypefn + @deftypefn {Target Hook} machine_mode TARGET_PROMOTE_FUNCTION_MODE (const_tree @var{type}, machine_mode @var{mode}, int *@var{punsignedp}, const_tree @var{funtype}, int @var{for_return}) Like @code{PROMOTE_MODE}, but it is applied to outgoing function arguments or function return values. The target hook should return the new mode diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in index 58d1e63..7d8dcff 100644 --- a/gcc/doc/tm.texi.in +++ b/gcc/doc/tm.texi.in @@ -921,6 +921,8 @@ sign-extend the result to 64 bits. On such machines, set Do not define this macro if it would never modify @var{m}. @end defmac +@hook TARGET_C_EXCESS_PRECISION + @hook TARGET_PROMOTE_FUNCTION_MODE @defmac PARM_BOUNDARY |