[PATCH] D86517: [RISC-V] Mark C_MV as a move instruction

[Alexander Richardson via Phabricator via llvm-commits]

arichardson created this revision.
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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D86517

Files:
  llvm/lib/Target/RISCV/RISCVInstrInfoC.td


Index: llvm/lib/Target/RISCV/RISCVInstrInfoC.td
===================================================================
--- llvm/lib/Target/RISCV/RISCVInstrInfoC.td
+++ llvm/lib/Target/RISCV/RISCVInstrInfoC.td
@@ -519,7 +519,8 @@
   let rs2 = 0;
 }
 
-let hasSideEffects = 0, mayLoad = 0, mayStore = 0 in
+let hasSideEffects = 0, mayLoad = 0, mayStore = 0, isMoveReg = 1,
+    isAsCheapAsAMove = 1 in
 def C_MV : RVInst16CR<0b1000, 0b10, (outs GPRNoX0:$rs1), (ins GPRNoX0:$rs2),
                       "c.mv", "$rs1, $rs2">,
            Sched<[WriteIALU, ReadIALU]>;


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