Document -fexcess-precision=16 in target.def

	* target.def (TARGET_C_EXCESS_PRECISION): Document
	-fexcess-precision=16.

diff --git a/gcc/target.def b/gcc/target.def
index 4d49ffc2c88077578c0b913f4c053df6c9ccb82a..a3d3b04a1657bfa006b8e9ccdc65ead2bcc7fde7 100644 (file)
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -6181,7 +6181,7 @@ of the excess precision explicitly added.  For\n\
 @code{EXCESS_PRECISION_TYPE_FLOAT16}, and\n\
 @code{EXCESS_PRECISION_TYPE_FAST}, the target should return the\n\
 explicit excess precision that should be added depending on the\n\
-value set for @option{-fexcess-precision=@r{[}standard@r{|}fast@r{]}}.\n\
+value set for @option{-fexcess-precision=@r{[}standard@r{|}fast@r{|}16@r{]}}.\n\
 Note that unpredictable explicit excess precision does not make sense,\n\
 so a target should never return @code{FLT_EVAL_METHOD_UNPREDICTABLE}\n\
 when @var{type} is @code{EXCESS_PRECISION_TYPE_STANDARD},\n\