[PATCH] D119921: [RISCV] Teach VSETVLInsert to optimize vsetvli for ScalarMoveInstr

[Chenbing.Zheng via Phabricator via llvm-commits]

Chenbing.Zheng added inline comments.


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Comment at: llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp:1056
+          if (isScalarMoveInstr(MI))
+            ScalarMoveVSETVLI = MI.getPrevNode();
           CurInfo = NewInfo;
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jacquesguan wrote:
> The scalar move instruction may share a VSETVLI with one or some other instruction.
In the case you said，the insertVSETVLI function will not be called. So ScalarMoveVSETVLI only be set if VSETVLI come from single ScalarMoveInstr.


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https://reviews.llvm.org/D119921