diff --git a/src/mir/Lowering.cpp b/src/mir/Lowering.cpp
index 28d65cb4..60f0af45 100644
--- a/src/mir/Lowering.cpp
+++ b/src/mir/Lowering.cpp
@@ -472,6 +472,23 @@ namespace mir
       {
         if (IsIntegerCompareOpcode(bin->GetOpcode()))
         {
+          // 浮点比较走 FCmpRR 路径（EmitCompareToFlags 定义在后，此处内联）
+          if (IsFloatValue(bin->GetLhs()) || IsFloatValue(bin->GetRhs()))
+          {
+            int flhs = EmitFloatValue(bin->GetLhs(), function, value_vregs, block);
+            int frhs = EmitFloatValue(bin->GetRhs(), function, value_vregs, block);
+            block.Append(Opcode::FCmpRR,
+                         {Operand::VReg(flhs, VRegClass::Float),
+                          Operand::VReg(frhs, VRegClass::Float)});
+            CondCode cond = GetCondCodeForCompareOpcode(bin->GetOpcode());
+            int dst = function.CreateVReg(VRegClass::Int);
+            block.Append(Opcode::CSet,
+                         {Operand::VReg(dst, VRegClass::Int),
+                          Operand::Imm(static_cast<int>(cond))});
+            value_vregs[value] = dst;
+            return dst;
+          }
+
           int lhs = EmitIntValue(bin->GetLhs(), function, value_vregs,
                                 scalar_slots, array_slots, block);
           int rhs = EmitIntValue(bin->GetRhs(), function, value_vregs,