Ok for trunk?
gcc/ChangeLog:
* doc/invoke.texi: Document -fexcess-precision=16.
---
gcc/doc/invoke.texi | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 85c938d4a14..673420fdd3e 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -14930,6 +14930,9 @@ assignments). This option is enabled by default for C
or C++ if a strict
conformance option such as @option{-std=c99} or @option{-std=c++17} is used.
@option{-ffast-math} enables @option{-fexcess-precision=fast} by default
regardless of whether a strict conformance option is used.
+If @option{-fexcess-precision=16} is specified, casts and assignments of
+@code{_Float16} and @code{bfloat16_t} cause value to be rounded to their
+semantic types if they're supported by the target.
@opindex mfpmath
@option{-fexcess-precision=standard} is not implemented for languages
--
2.31.1
