This intrinsic returns the return address of the current function.
SyntaxThe __return_address intrinsic returns
the value of the link register that is used in returning from the
current function.
The __return_address intrinsic does not affect
the ability of the compiler to perform optimizations such as inlining,
tailcalling, and code sharing. Where optimizations are made, the value
returned by __return_address reflects the optimizations
performed:
- No optimization
When no optimizations are performed, the value returned by
__return_addressfrom within a functionfoois the return address offoo.- Inline optimization
If a function
foois inlined into a functionbarthen the value returned by__return_addressfrom withinfoois the return address ofbar.- Tail-call optimization
If a function
foois tail-called from a functionbarthen the value returned by__return_addressfrom withinfoois the return address ofbar.
PDF version