
While working on supporting PR #109101 on Linux/sparc64, I was reminded that `clang -m32` still defaults to generating V8 code, although the 64-bit kernel requires a V9 CPU. This patch corrects that. Tested on `sparc64-unknown-linux-gnu`, `x86_64-pc-linux-gnu`, `sparcv9-sun-solaris2.11`, and `amd64-pc-solaris2.11`.