[llvm] [GlobalISel] Diagnose inline assembly constraint lowering errors (PR #135782)

[Pierre van Houtryve via llvm-commits]

Pierre-vh wrote:

Reverted this because `compiler-rt/lib/scudo/standalone/tests/wrappers_cpp_test.cpp` fails. `m` constraint appears unsupported on aarch64.

I wonder if this should be a warning instead, so compilation keeps going?

https://github.com/llvm/llvm-project/pull/135782