[llvm] [RISCV][TTI] Model partial reduce of ext for zvqdotq (PR #146788)

[Philip Reames via llvm-commits]

================

----------------
preames wrote:

I'd really rather not check debug output.  Doing so results in pretty fragile tests.  One of the ideas I was considering was to update the cost analysis path to do the pattern match so that we can test the costing changes that way, but I'd like that to not be on critical path for this change if you're okay with that.  

https://github.com/llvm/llvm-project/pull/146788