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* [gcc r14-9588] Document -fexcess-precision=16.
@ 2024-03-21  0:48 hongtao Liu
  0 siblings, 0 replies; only message in thread
From: hongtao Liu @ 2024-03-21  0:48 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:415091f09096a0ebba1fdcd4af8c2fda24cfd411

commit r14-9588-g415091f09096a0ebba1fdcd4af8c2fda24cfd411
Author: liuhongt <hongtao.liu@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

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