6.33.24 Nios II Function Attributes
These function attributes are supported by the Nios II back end:
target (
options)
- As discussed in Common Function Attributes, this attribute
allows specification of target-specific compilation options.
When compiling for Nios II, the following options are allowed:
- `custom-insn=N'
- `no-custom-insn'
- Each `custom-insn=N' attribute locally enables use of a
custom instruction with encoding N when generating code that uses
insn. Similarly, `no-custom-insn' locally inhibits use of
the custom instruction insn.
These target attributes correspond to the
-mcustom-insn=N and -mno-custom-insn
command-line options, and support the same set of insn keywords.
See Nios II Options, for more information.
- `custom-fpu-cfg=name'
- This attribute corresponds to the -mcustom-fpu-cfg=name
command-line option, to select a predefined set of custom instructions
named name.
See Nios II Options, for more information.