[Bug target/69171] [6 Regression] error: unrecognizable insn: on x86_64 with -O2

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69171

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 37244
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37244&action=edit
A patch