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As such the internal linker will fail for them. The alternative would be to implement them as stubs in the linker and have them barf when called. > Not all operations are supported by all target processors. If a particular operation cannot be implemented on the target processor, a warning is generated and a call an external function is generated. The external function carries the same name as the built-in version, with an additional suffix ‘_n’ where n is the size of the data type. (https://gcc.gnu.org/onlinedocs/gcc/_005f_005fsync-Builtins.html)
As such the internal linker will fail for them. The alternative would be to implement them as stubs in the linker and have them barf when called. > Not all operations are supported by all target processors. If a particular operation cannot be implemented on the target processor, a warning is generated and a call an external function is generated. The external function carries the same name as the built-in version, with an additional suffix ‘_n’ where n is the size of the data type. (https://gcc.gnu.org/onlinedocs/gcc/_005f_005fsync-Builtins.html)
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