[PATCH] D104838: [RISCV][NFC] Combine the control flow for different RetOp of interrupt function

[Jim Lin via Phabricator via llvm-commits]

Jim created this revision.
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Jim requested review of this revision.
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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104838

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp


Index: llvm/lib/Target/RISCV/RISCVISelLowering.cpp
===================================================================
--- llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -7938,6 +7938,7 @@
     RetOps.push_back(Glue);
   }
 
+  unsigned RetOpc = RISCVISD::RET_FLAG;
   // Interrupt service routines use different return instructions.
   const Function &Func = DAG.getMachineFunction().getFunction();
   if (Func.hasFnAttribute("interrupt")) {
@@ -7949,18 +7950,15 @@
     StringRef Kind =
       MF.getFunction().getFnAttribute("interrupt").getValueAsString();
 
-    unsigned RetOpc;
     if (Kind == "user")
       RetOpc = RISCVISD::URET_FLAG;
     else if (Kind == "supervisor")
       RetOpc = RISCVISD::SRET_FLAG;
     else
       RetOpc = RISCVISD::MRET_FLAG;
-
-    return DAG.getNode(RetOpc, DL, MVT::Other, RetOps);
   }
 
-  return DAG.getNode(RISCVISD::RET_FLAG, DL, MVT::Other, RetOps);
+  return DAG.getNode(RetOpc, DL, MVT::Other, RetOps);
 }
 
 void RISCVTargetLowering::validateCCReservedRegs(


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