https://gcc.gnu.org/g:415091f09096a0ebba1fdcd4af8c2fda24cfd411
commit r14-9588-g415091f09096a0ebba1fdcd4af8c2fda24cfd411
Author: liuhongt <hongtao....@intel.com>
Date: Mon Mar 18 18:53:59 2024 +0800
Document -fexcess-precision=16.
gcc/ChangeLog:
PR middle-end/114347
* doc/invoke.texi: Document -fexcess-precision=16.
Diff:
---
gcc/doc/invoke.texi | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index b446b2905c7..e0950ca5dc2 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -14931,6 +14931,9 @@ 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, constants and the
+results of expressions with types @code{_Float16} and @code{__bf16}
+are computed without excess precision.
@opindex mfpmath
@option{-fexcess-precision=standard} is not implemented for languages
