[clang] [flang] [llvm] Fix/172049 loop vectorize sigfpe (PR #172094)

[Luke Lau via llvm-commits]

https://github.com/lukel97 requested changes to this pull request.

Hi thanks for submitting a PR for this. Unfortunately I think the issue that was filed for this may be slightly out of date. Were you definitely able to recreate the crash after 0fbb45e7d6dcccf88248d6be5e4f167ddb3e3fa8?

https://github.com/llvm/llvm-project/pull/172094