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Next: , Previous: , Up: Machine-Dependent Options [Contents][Index]

3.19.36 OpenRISC Options

These options are defined for OpenRISC:

--mboard=name -
-

Configure a board specific runtime. This will be passed to the linker for newlib board library linking. The default is or1ksim.

--mnewlib -
-

This option is ignored; it is for compatibility purposes only. This used to select linker and preprocessor options for use with newlib.

- -msoft-div -
-mhard-div
-

Select software or hardware divide (l.div, l.divu) instructions. This default is hardware divide.

- -msoft-mul -
-mhard-mul
-

Select software or hardware multiply (l.mul, l.muli) instructions. This default is hardware multiply.

- -msoft-float -
-mhard-float
-

Select software or hardware for floating point operations. The default is software.

--mdouble-float -
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When -mhard-float is selected, enables generation of double-precision floating point instructions. By default functions from libgcc are used to perform double-precision floating point operations.

--munordered-float -
-

When -mhard-float is selected, enables generation of unordered floating point compare and set flag (lf.sfun*) instructions. By default functions from libgcc are used to perform unordered floating point compare and set flag operations.

--mcmov -
-

Enable generation of conditional move (l.cmov) instructions. By default the equivalent will be generated using set and branch.

--mror -
-

Enable generation of rotate right (l.ror) instructions. By default functions from libgcc are used to perform rotate right operations.

--mrori -
-

Enable generation of rotate right with immediate (l.rori) instructions. By default functions from libgcc are used to perform rotate right with immediate operations.

--msext -
-

Enable generation of sign extension (l.ext*) instructions. By default memory loads are used to perform sign extension.

--msfimm -
-

Enable generation of compare and set flag with immediate (l.sf*i) instructions. By default extra instructions will be generated to store the immediate to a register first.

--mshftimm -
-

Enable generation of shift with immediate (l.srai, l.srli, l.slli) instructions. By default extra instructions will be generated to store the immediate to a register first.

--mcmodel=small -
-

Generate OpenRISC code for the small model: The GOT is limited to 64k. This is the default model.

--mcmodel=large -
-

Generate OpenRISC code for the large model: The GOT may grow up to 4G in size.

Next: PDP-11 Options, Previous: Nvidia PTX Options, Up: Machine-Dependent Options [Contents][Index]

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- © Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
- https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/OpenRISC-Options.html -

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