diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 31490b8f687..c7d1c5d187c 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -340,7 +340,7 @@ Objective-C and Objective-C++ Dialects}. -fsched2-use-superblocks @gol -fsched2-use-traces -fsee -freschedule-modulo-scheduled-loops @gol -fsection-anchors -fsignaling-nans -fsingle-precision-constant @gol --fstack-protector -fstack-protector-all @gol +-fno-split-wide-types -fstack-protector -fstack-protector-all @gol -fstrict-aliasing -fstrict-overflow -ftracer -fthread-jumps @gol -funroll-all-loops -funroll-loops -fpeel-loops @gol -fsplit-ivs-in-unroller -funswitch-loops @gol @@ -4600,6 +4600,7 @@ compilation time. -fcprop-registers @gol -fif-conversion @gol -fif-conversion2 @gol +-fsplit-wide-types @gol -ftree-ccp @gol -ftree-dce @gol -ftree-dominator-opts @gol @@ -4938,6 +4939,16 @@ the condition is known to be true or false. Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}. +@item -fsplit-wide-types +@opindex -fsplit-wide-types +When using a type that occupies multiple registers, such as @code{long +long} on a 32-bit system, split the registers apart and allocate them +independently. This normally generates better code for those types, +but may make debugging more difficult. + +Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, +@option{-Os}. + @item -fcse-follow-jumps @opindex fcse-follow-jumps In common subexpression elimination, scan through jump instructions |