[Bug target/123364] [13/14/15/16 Regression] ICE with 2 input operands with constraints of "0" where 0 constraint is "=t"

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123364

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |13.5
            Summary|ICE: in emit_swap_insn, at  |[13/14/15/16 Regression]
                   |reg-stack.cc with fsincos   |ICE with 2 input operands
                   |inline asm                  |with constraints of "0"
                   |                            |where 0 constraint is "=t"
      Known to work|                            |4.1.2
      Known to fail|                            |4.4.7

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
void bug(float b) {
    __asm__ volatile("" : "=t"(b): "0"(b), "0"(b));
}
```