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6.33.22 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.

+

+ © Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
+ https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/Nios-II-Function-Attributes.html +

+
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