[llvm] [RISCV][InsertVSETVLI] Remove redundant vsetvli by repeating the coalesce phase (PR #141298)

[Piyou Chen via llvm-commits]

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@@ -26,6 +26,7 @@
 
 #include "RISCV.h"
 #include "RISCVSubtarget.h"
+#include "llvm/ADT/SetVector.h"
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BeMg wrote:

Is this include perhaps unnecessary?

https://github.com/llvm/llvm-project/pull/141298