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| author | Sandra Loosemore <sandra@codesourcery.com> | 2012-07-30 17:49:40 -0400 |
|---|---|---|
| committer | Sandra Loosemore <sandra@gcc.gnu.org> | 2012-07-30 17:49:40 -0400 |
| commit | 3df0998b4873eabfb99b4662d2f2e3d256171dae (patch) | |
| tree | 27b05cc4fc8d25729f49c6a29fc0428209d6a08f | |
| parent | 9a99299d552e486dfc1adaafaf5c5aa4b5abd1fc (diff) | |
| download | gcc-3df0998b4873eabfb99b4662d2f2e3d256171dae.zip gcc-3df0998b4873eabfb99b4662d2f2e3d256171dae.tar.gz gcc-3df0998b4873eabfb99b4662d2f2e3d256171dae.tar.bz2 | |
invoke.texi (MIPS Options): Document -mno-float.
2012-07-30 Sandra Loosemore <sandra@codesourcery.com>
Julian Brown <julian@codesourcery.com>
gcc/
* doc/invoke.texi (MIPS Options): Document -mno-float.
* config/mips/mips.h (MIPS_ARCH_FLOAT_SPEC): Make it know
about -mno-float.
Co-Authored-By: Julian Brown <julian@codesourcery.com>
From-SVN: r189989
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/mips/mips.h | 2 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 15 |
3 files changed, 22 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b1d114c..2903070 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2012-07-30 Sandra Loosemore <sandra@codesourcery.com> + Julian Brown <julian@codesourcery.com> + + * doc/invoke.texi (MIPS Options): Document -mno-float. + * config/mips/mips.h (MIPS_ARCH_FLOAT_SPEC): Make it know + about -mno-float. + 2012-07-30 Joseph Myers <joseph@codesourcery.com> * doc/sourcebuild.texi (Subdirectories): Document common diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h index c227e82..68177de 100644 --- a/gcc/config/mips/mips.h +++ b/gcc/config/mips/mips.h @@ -713,7 +713,7 @@ struct mips_cpu_info { link-compatible. */ #define MIPS_ARCH_FLOAT_SPEC \ - "%{mhard-float|msoft-float|march=mips*:; \ + "%{mhard-float|msoft-float|mno-float|march=mips*:; \ march=vr41*|march=m4k|march=4k*|march=24kc|march=24kec \ |march=34kc|march=74kc|march=1004kc|march=5kc \ |march=octeon|march=xlr: -msoft-float; \ diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index bdbc2a4..5686f9a 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -733,7 +733,8 @@ Objective-C and Objective-C++ Dialects}. -mabi=@var{abi} -mabicalls -mno-abicalls @gol -mshared -mno-shared -mplt -mno-plt -mxgot -mno-xgot @gol -mgp32 -mgp64 -mfp32 -mfp64 -mhard-float -msoft-float @gol --msingle-float -mdouble-float -mdsp -mno-dsp -mdspr2 -mno-dspr2 @gol +-mno-float -msingle-float -mdouble-float @gol +-mdsp -mno-dsp -mdspr2 -mno-dspr2 @gol -mmcu -mmno-mcu @gol -mfpu=@var{fpu-type} @gol -msmartmips -mno-smartmips @gol @@ -15633,6 +15634,18 @@ Use floating-point coprocessor instructions. Do not use floating-point coprocessor instructions. Implement floating-point calculations using library calls instead. +@item -mno-float +@opindex mno-float +Equivalent to @option{-msoft-float}, but additionally asserts that the +program being compiled does not perform any floating-point operations. +This option is presently supported only by some bare-metal MIPS +configurations, where it may select a special set of libraries +that lack all floating-point support (including, for example, the +floating-point @code{printf} formats). +If code compiled with @code{-mno-float} accidentally contains +floating-point operations, it is likely to suffer a link-time +or run-time failure. + @item -msingle-float @opindex msingle-float Assume that the floating-point coprocessor only supports single-precision |