ices/62046.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#62046

#![feature(asm)]

struct ThreadContext {
    rsp: u64,
    r15: u64,
}

fn gt_switch(new: *const ThreadContext) -> ! {
    unsafe {
        asm!("mov     $1, $0" : "+r"("r15") : "*m"(&(*new).r15));
        asm!("mov     $1, $0" : "+r"("rsp") : "*m"(&(*new).rsp));
        asm!("ret");
        std::hint::unreachable_unchecked()
    }
}

fn main() {
    let ctx = ThreadContext{rsp: 0x80, r15: 0x88};

    gt_switch(&ctx);
}

=== stdout ===
=== stderr ===
error[E0668]: malformed inline assembly
  --> /home/runner/work/glacier/glacier/ices/62046.rs:10:9
   |
10 |         asm!("mov     $1, $0" : "+r"("r15") : "*m"(&(*new).r15));
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0668]: malformed inline assembly
  --> /home/runner/work/glacier/glacier/ices/62046.rs:11:9
   |
11 |         asm!("mov     $1, $0" : "+r"("rsp") : "*m"(&(*new).rsp));
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0668`.
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