GCC maintianers:
The following patch improves the description of the ppc64 -mlong-double
option.
I compiled it and tested it by hand with the command:
gcc --target-help
Please let me know if the patch is OK for mainline.
Thanks.
Carl Love
------------------------------------------------------
RS6000 Fix -mlong-double documentation
gcc/ChangeLog
2020-03-06 Carl Love <c...@us.ibm.com>
* config/rs6000/rs6000.opt: Update the description of the
command line option.
---
gcc/config/rs6000/rs6000.opt | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt
index ed3b44a04a6..8e0ae9a0b5f 100644
--- a/gcc/config/rs6000/rs6000.opt
+++ b/gcc/config/rs6000/rs6000.opt
@@ -414,7 +414,8 @@ Warn about deprecated 'vector long ...' AltiVec type usage.
mlong-double-
Target RejectNegative Joined UInteger Var(rs6000_long_double_type_size) Save
--mlong-double-[64,128] Specify size of long double.
+Use -mlong-double-64 for 64-bit IEEE floating point format. Use
+-mlong-double-128 for 128-bit floating point format (either IEEE or IBM).
; This option existed in the past, but now is always on.
mlra
--
2.17.1
