From a9f3e1a459157e334603e505af38d4bccf50b90a Mon Sep 17 00:00:00 2001 From: Jeff Law Date: Mon, 24 Nov 1997 13:53:15 -0700 Subject: [PATCH] Doc fixes from stan. From-SVN: r16691 --- gcc/invoke.texi | 30 ++++++++++++++++++++++++------ 1 file changed, 24 insertions(+), 6 deletions(-) diff --git a/gcc/invoke.texi b/gcc/invoke.texi index 1880143f5934..cf1c8a58f626 100644 --- a/gcc/invoke.texi +++ b/gcc/invoke.texi @@ -306,7 +306,9 @@ in the following sections. -mstats -EL -EB -G @var{num} -nocpp @emph{i386 Options} --m486 -m386 -mieee-fp -mno-fancy-math-387 +-mcpu=@var{cpu type} +-march=@var{cpu type} +-mieee-fp -mno-fancy-math-387 -mno-fp-ret-in-387 -msoft-float -msvr3-shlib -mno-wide-multiply -mrtd -malign-double -mreg-alloc=@var{list} -mregparm=@var{num} @@ -4516,11 +4518,27 @@ defaults. These @samp{-m} options are defined for the i386 family of computers: -@table @code -@item -m486 -@itemx -m386 -Control whether or not code is optimized for a 486 instead of an -386. Code generated for an 486 will run on a 386 and vice versa. +@item -mcpu=@var{cpu type} +Assume the defaults for the machine type @var{cpu type} when scheduling +instructions. The choices for @var{cpu type} are: @samp{i386}, +@samp{i486}, @samp{i586} (@samp{pentium}), @samp{pentium}, @samp{i686} +(@samp{pentiumpro}) and @samp{pentiumpro}. While picking a specific +@var{cpu type} will schedule things appropriately for that particular +chip, the compiler will not generate any code that does not run on the +i386 without the @samp{-march=@var{cpu type}} option being used. + +@item -march=@var{cpu type} +Generate instructions for the machine type @var{cpu type}. The choices +for @var{cpu type} are: @samp{i386}, @samp{i486}, @samp{pentium}, and +@samp{pentiumpro}. Specifying @samp{-march=@var{cpu type}} implies +@samp{-mcpu=@var{cpu type}}. + +@item -m386 +@itemx -m486 +@itemx -mpentium +@itemx -mpentiumpro +Synonyms for -mcpu=i386, -mcpu=i486, -mcpu=pentium, and -mcpu=pentiumpro +respectively. @item -mieee-fp @itemx -mno-ieee-fp