1 files changed, 3 insertions, 1 deletions
diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
index c76b45b8b..022b6584c 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
@@ -58,7 +58,9 @@ void EmitPhiMove(EmitContext& ctx, const IR::Value& phi_value, const IR::Value&
     }
     const Register phi_reg{ctx.reg_alloc.Consume(IR::Value{&phi})};
     const Value eval_value{ctx.reg_alloc.Consume(value)};
-
+    if (!value.IsImmediate() && IR::IsUndef(RegAlloc::AliasInst(*value.Inst()))) {
+        return;
+    }
     if (phi_reg == eval_value) {
         return;
     }