[Bug target/81988] [7/8 Regression] sparc64: emits STD instruction with odd register

[mikpelinux at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81988

--- Comment #2 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Started with r244034, i.e. when SPARC switched to LRA by default.  -mno-lra
works around it.