diff options
Diffstat (limited to 'contrib/gcc/f/invoke.texi')
| -rw-r--r-- | contrib/gcc/f/invoke.texi | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/contrib/gcc/f/invoke.texi b/contrib/gcc/f/invoke.texi index 5474eec6af0d..50c7ca42e736 100644 --- a/contrib/gcc/f/invoke.texi +++ b/contrib/gcc/f/invoke.texi @@ -9,7 +9,7 @@ Copyright @copyright{} 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.1 or +under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with the Invariant Sections being ``GNU General Public License'' and ``Funding Free Software'', the Front-Cover texts being (a) (see below), and with @@ -182,7 +182,7 @@ by type. Explanations are in the following sections. -malign-double @gol -ffloat-store -fforce-mem -fforce-addr -fno-inline @gol -ffast-math -fstrength-reduce -frerun-cse-after-loop @gol --funsafe-math-optimizations -fno-trapping-math @gol +-funsafe-math-optimizations -ffinite-math-only -fno-trapping-math @gol -fexpensive-optimizations -fdelayed-branch @gol -fschedule-insns -fschedule-insn2 -fcaller-saves @gol -funroll-loops -funroll-all-loops @gol @@ -389,7 +389,7 @@ This option is supplied automatically when @option{-v} or @option{--verbose} is specified as a command-line option for @command{g77} or @command{gcc} and when the resulting commands compile Fortran source files. -In GCC 3.1, this is changed back to the behaviour @command{gcc} displays +In GCC 3.1, this is changed back to the behavior @command{gcc} displays for @samp{.c} files. @cindex -fset-g77-defaults option @@ -1356,6 +1356,12 @@ Some of these have no effect when compiling programs written in Fortran: @cindex -Wswitch option @cindex options, -Wswitch @item -Wswitch +@cindex -Wswitch-default option +@cindex options, -Wswitch-default +@item -Wswitch-default +@cindex -Wswitch-enum option +@cindex options, -Wswitch-enum +@item -Wswitch-enum @cindex -Wtraditional option @cindex options, -Wtraditional @item -Wtraditional @@ -1536,8 +1542,8 @@ Note that if you are not optimizing, no functions can be expanded inline. @cindex conformance, IEEE 754 Might allow some programs designed to not be too dependent on IEEE behavior for floating-point to run faster, or die trying. -Sets @option{-funsafe-math-optimizations}, and -@option{-fno-trapping-math}. +Sets @option{-funsafe-math-optimizations}, @option{-ffinite-math-only}, +and @option{-fno-trapping-math}. @cindex -funsafe-math-optimizations option @cindex options, -funsafe-math-optimizations @@ -1545,6 +1551,18 @@ Sets @option{-funsafe-math-optimizations}, and Allow optimizations that may be give incorrect results for certain IEEE inputs. +@cindex -ffinite-math-only option +@cindex options, -ffinite-math-only +@item -ffinite-math-only +Allow optimizations for floating-point arithmetic that assume +that arguments and results are not NaNs or +-Infs. + +This option should never be turned on by any @option{-O} option since +it can result in incorrect output for programs which depend on +an exact implementation of IEEE or ISO rules/specifications. + +The default is @option{-fno-finite-math-only}. + @cindex -fno-trapping-math option @cindex options, -fno-trapping-math @item -fno-trapping-math |