[llvm] [llvm][ARM][CodeGen] Disable MEMCPY LDM/STM inlining for Cortex v7-m (PR #106378)

[Alan Phipps via llvm-commits]

evodius96 wrote:

How does this impact benchmarks like Dhrystone?  I understanding that would rely quite a bit on memcpy inlining.  Is there a first-class way of re-enabling it?

https://github.com/llvm/llvm-project/pull/106378