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Diffstat (limited to 'gcc-4.9/gcc/doc/install.texi')
| -rw-r--r-- | gcc-4.9/gcc/doc/install.texi | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/doc/install.texi b/gcc-4.9/gcc/doc/install.texi index b298321be..ccb7e7b10 100644 --- a/gcc-4.9/gcc/doc/install.texi +++ b/gcc-4.9/gcc/doc/install.texi @@ -1283,6 +1283,32 @@ ISA for floating-point arithmetics. You can select either @samp{sse} which enables @option{-msse2} or @samp{avx} which enables @option{-mavx} by default. This option is only supported on i386 and x86-64 targets. +@item --with-fp-32=@var{mode} +On MIPS targets, set the default value for the @option{-mfp} option when using +the o32 ABI. The possibilities for @var{mode} are: +@table @code +@item 32 +Use the o32 FP32 ABI extension, as with the @option{-mfp32} command-line +option. +@item xx +Use the o32 FPXX ABI extension, as with the @option{-mfpxx} command-line +option. +@item 64 +Use the o32 FP64 ABI extension, as with the @option{-mfp64} command-line +option. +@end table +In the absence of this configuration option the default is to use the o32 +FP32 ABI extension. + +@item --with-odd-spreg-32 +On MIPS targets, set the @option{-modd-spreg} option by default when using +the o32 ABI. + +@item --without-odd-spreg-32 +On MIPS targets, set the @option{-mno-odd-spreg} option by default when using +the o32 ABI. This is normally used in conjunction with +@option{--with-fp-32=64} in order to target the o32 FP64A ABI extension. + @item --with-nan=@var{encoding} On MIPS targets, set the default encoding convention to use for the special not-a-number (NaN) IEEE 754 floating-point data. The |