diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 599b0f6f055..5404a3c7706 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -636,7 +636,8 @@ Objective-C and Objective-C++ Dialects}. -mno-align-stringops -minline-all-stringops @gol -minline-stringops-dynamically -mstringop-strategy=@var{alg} @gol -mpush-args -maccumulate-outgoing-args -m128bit-long-double @gol --m96bit-long-double -mregparm=@var{num} -msseregparm @gol +-m96bit-long-double -mlong-double-64 -mlong-double-80 @gol +-mregparm=@var{num} -msseregparm @gol -mveclibabi=@var{type} -mvect8-ret-in-mem @gol -mpc32 -mpc64 -mpc80 -mstackrealign @gol -momit-leaf-frame-pointer -mno-red-zone -mno-tls-direct-seg-refs @gol @@ -13517,6 +13518,21 @@ as well as modifying the function calling convention for functions taking @code{long double}. Hence they are not binary-compatible with code compiled without that switch. +@item -mlong-double-64 +@itemx -mlong-double-80 +@opindex mlong-double-64 +@opindex mlong-double-80 +These switches control the size of @code{long double} type. A size +of 64 bits makes the @code{long double} type equivalent to the @code{double} +type. This is the default for Bionic C library. + +@strong{Warning:} if you override the default value for your target ABI, this +changes the size of +structures and arrays containing @code{long double} variables, +as well as modifying the function calling convention for functions taking +@code{long double}. Hence they are not binary-compatible +with code compiled without that switch. + @item -mlarge-data-threshold=@var{threshold} @opindex mlarge-data-threshold When @option{-mcmodel=medium} is specified, data objects larger than |