src/hotspot/cpu/x86/c1_LinearScan_x86.cpp

@@ -26,10 +26,15 @@
 #include "c1/c1_Instruction.hpp"
 #include "c1/c1_LinearScan.hpp"
 #include "utilities/bitMap.inline.hpp"
 
 
+#ifdef _LP64
+void LinearScan::allocate_fpu_stack() {
+  // No FPU stack used on x86-64
+}
+#else
 //----------------------------------------------------------------------
 // Allocation of FPU stack slots (Intel x86 only)
 //----------------------------------------------------------------------
 
 void LinearScan::allocate_fpu_stack() {

@@ -813,16 +818,10 @@
 }
 
 #ifndef PRODUCT
 void FpuStackAllocator::check_invalid_lir_op(LIR_Op* op) {
   switch (op->code()) {
-    case lir_24bit_FPU:
-    case lir_reset_FPU:
-    case lir_ffree:
-      assert(false, "operations not allowed in lir. If one of these operations is needed, check if they have fpu operands");
-      break;
-
     case lir_fpop_raw:
     case lir_fxch:
     case lir_fld:
       assert(false, "operations only inserted by FpuStackAllocator");
       break;

@@ -1137,5 +1136,6 @@
   }
 #endif
 
   return changed;
 }
+#endif // _LP64