[llvm] [RegAlloc] Remove default restriction on non-trivial rematerialization (PR #159211)

[Philip Reames via llvm-commits]

preames wrote:

> I'll grab clang profile on the problematic input and post it here, maybe that would be enough to see any optimization opportunities.

This would be appreciated thanks!  I'd like to try and get to the bottom of the issue you're seeing.

https://github.com/llvm/llvm-project/pull/159211