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4.9 ld and NDS32

For NDS32, there are some options to select relaxation behavior. The linker relaxes objects according to these options.

--m[no-]fp-as-gp

Disable/enable fp-as-gp relaxation.

--mexport-symbols=FILE

Exporting symbols and their address into FILE as linker script.

--m[no-]ex9

Disable/enable link-time EX9 relaxation.

--mexport-ex9=FILE

Export the EX9 table after linking.

--mimport-ex9=FILE

Import the Ex9 table for EX9 relaxation.

--mupdate-ex9

Update the existing EX9 table.

--mex9-limit=NUM

Maximum number of entries in the ex9 table.

--mex9-loop-aware

Avoid generating the EX9 instruction inside the loop.

--m[no-]ifc

Disable/enable the link-time IFC optimization.

--mifc-loop-aware

Avoid generating the IFC instruction inside the loop.