[llvm] [MachineSink] Add option for aggressive loop sinking (PR #117247)

[Matt Arsenault via llvm-commits]

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@@ -799,6 +816,30 @@ bool MachineSinking::runOnMachineFunction(MachineFunction &MF) {
     }
   }
 
+  if (AggressivelySinkInstsIntoCycle) {
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arsenm wrote:

Integrate this into the above loop in SinkInstsIntoCycle? I don't see why it's a second round of post-processing the main sinking 

https://github.com/llvm/llvm-project/pull/117247