[llvm] [CodeGen] TwoAddressInstructionPass: Control NumVisited limit via command line option (PR #100125)

[Simon Pilgrim via llvm-commits]

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@@ -80,6 +80,13 @@ EnableRescheduling("twoaddr-reschedule",
                    cl::desc("Coalesce copies by rescheduling (default=true)"),
                    cl::init(true), cl::Hidden);
 
+// Limit the number of rescheduling visits to dependent instructions.
+// FIXME: Arbitrary limit to reduce compile time cost.
+static cl::opt<unsigned>
+    MaxVisits("twoaddr-visit-limit", cl::Hidden, cl::init(10),
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RKSimon wrote:

`twoaddr-reschedule-visit-limit` sgtm

https://github.com/llvm/llvm-project/pull/100125