1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVInstPrinter.cpp b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVInstPrinter.cpp
index d36c0d7..d525471 100644
--- a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVInstPrinter.cpp
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVInstPrinter.cpp
@@ -121,6 +121,8 @@ void RISCVInstPrinter::printCSRSystemRegister(const MCInst *MI, unsigned OpNo,
   unsigned Imm = MI->getOperand(OpNo).getImm();
   auto Range = RISCVSysReg::lookupSysRegByEncoding(Imm);
   for (auto &Reg : Range) {
+    if (Reg.IsAltName || Reg.IsDeprecatedName)
+      continue;
     if (Reg.haveRequiredFeatures(STI.getFeatureBits())) {
       markup(O, Markup::Register) << Reg.Name;
       return;