[Bug target/81708] The x86 stack canary location should be customizable

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81708

--- Comment #18 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
on x86_64 with -fPIC or -fpic, my_guard's address is indeed loaded from the GOT
with @GOTPCREL indeed

on x86_64 with -fPIE or -fpie, however, it is used just as expected by the
testcase.  which should be fine as long as my_guard is required to be a
link-time defined constant.  

but if it is, then there's no point in loading its address from the GOT, not on
x86_64 PIC, not on ia32 PIC/PIE.

thus my question.  something's fishy there.