[llvm] [llvm][loop-rotate] Allow forcing loop-rotation (PR #82828)

[Paul Kirth via llvm-commits]

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@@ -209,6 +209,15 @@ static cl::opt<bool> EnableLoopFlatten("enable-loop-flatten", cl::init(false),
                                        cl::Hidden,
                                        cl::desc("Enable the LoopFlatten Pass"));
 
+// Experimentally allow loop header duplication. This should allow for better
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ilovepi wrote:

I think the new wording should be less ambiguous. Happy to change it if you have a preference, though.

https://github.com/llvm/llvm-project/pull/82828