[compiler-rt] compiler-rt/arm: Check for overflow when adding float denorms (PR #185245)

[Keith Packard via llvm-commits]

keith-packard wrote:

> I've run through an x86_64, arm-none-linux-gnueabi and arm-none-linux-gnueabihf run of the tests via the compiler-rt CMake interface and the addfs3_test.c passes. This is both with the original #include and the functions that have been extracted.

Thanks much for your careful review; I've updated the code to address your comments.



https://github.com/llvm/llvm-project/pull/185245