[Bug target/97891] [x86] Consider using registers on large initializations

[andysem at mail dot ru via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97891

--- Comment #1 from andysem at mail dot ru ---
As a side note, the "xorl %edx, %edx" in the original code should have been
moved outside the loop, as it was in the code with __asm__ block.