1 files changed, 0 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/StackMaps.cpp b/llvm/lib/CodeGen/StackMaps.cpp
index 81b288df3b07..7480963c1f52 100644
--- a/llvm/lib/CodeGen/StackMaps.cpp
+++ b/llvm/lib/CodeGen/StackMaps.cpp
@@ -268,12 +268,6 @@ StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
     if (MOI->isImplicit())
       return ++MOI;
 
-    if (MOI->isUndef()) {
-      // Record `undef` register as constant. Use same value as ISel uses.
-      Locs.emplace_back(Location::Constant, sizeof(int64_t), 0, 0xFEFEFEFE);
-      return ++MOI;
-    }
-
     assert(MOI->getReg().isPhysical() &&
            "Virtreg operands should have been rewritten before now.");
     const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(MOI->getReg());