[Bug c++/97848] [missed optimization] tls init function check emitted for consinit thread_local variables (C++20)

[avi--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97848

--- Comment #1 from Avi Kivity <a...@cloudius-systems.com> ---
Still bad on trunk. Clang gets this right:

foo_good():                           # @foo_good()
        movq    x@GOTTPOFF(%rip), %rax
        movl    %fs:(%rax), %eax
        retq
set_foo(int):                            # @set_foo(int)
        movq    x@GOTTPOFF(%rip), %rax
        movl    %edi, %fs:(%rax)
        retq