[llvm-branch-commits] [llvm] [NFC][MachineBlockHashInfo] Fork hash_16_bytes to guarantee stability (PR #192862)

[Matt Arsenault via llvm-branch-commits]

================
@@ -21,31 +20,48 @@
 
 using namespace llvm;
 
+// Forked from `hashing::detail::hash_16_bytes` to provide stability.
----------------
arsenm wrote:

Is it really necessary to duplicate the function on the off chance it changes in the future? That seems unlikely. Can you just rename the the function to stable_hash.... or something and comment it should not change? 

https://github.com/llvm/llvm-project/pull/192862