[VENTUS][RISCV][fix] Fix the undefined physical register bug

Fix the undefined physical register bug when inserting VMV_V_X instruction in "checkJoinMBB" funtion to compile with "--verify-machineinstr" parameter.
2023-09-28 10:24:45 +08:00 · 2023-09-28 10:24:45 +08:00 · e6937f5ead
parent 6630f81570
commit e6937f5ead
1 changed files with 1 additions and 0 deletions
--- a/llvm/lib/Target/RISCV/VentusInsertJoinToVBranch.cpp
+++ b/llvm/lib/Target/RISCV/VentusInsertJoinToVBranch.cpp
@ -269,6 +269,7 @@ bool VentusInsertJoinToVBranch::checkJoinMBB(MachineBasicBlock &MBB) const {
      }
      if (NeedToBeErased) {
        IsChanged |= true;
+        MBB.addLiveIn(MCRegister(MI.getOperand(0).getReg()));
        MI.eraseFromParent();
      }
    }