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A comment on “csinc”, the AArch64 instruction you didn’t know you wanted. Parent comment

Re:“csinc”, the AArch64 instruction you didn’t know you wanted by aleden on Wednesday June 07, 2023 @03:42AM (#36224030)
IFunc relocations are how glibc dynamically chooses the best memcpy routine to use at runtime based on the CPU.

see https://github.com/bminor/glibc/blob/glibc-2.31/sysdeps/x86_...

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Re:“csinc”, the AArch64 instruction you didn’t know you wanted by Findecanor on Wednesday June 07, 2023 @05:01AM (#36224531)
Here's a article that describes how to use function multi-versioning and indirect functions (ifunc) with GCC and GNU tools:

https://lwn.net/Articles/691932/

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