Shift IREG_FPU_TOP to end

src/codegen_new/codegen_reg.h

@@ -56,8 +56,6 @@ enum {
     IREG_GS_seg,
     IREG_SS_seg,
 
-    IREG_FPU_TOP,
-
     /*FPU stack registers are physical registers. Use IREG_ST() / IREG_tag()
       to access.
       When CODEBLOCK_STATIC_TOP is set, the physical register number will be
@@ -123,6 +121,8 @@ enum {
     IREG_eaa16,
     IREG_x87_op,
 
+    IREG_FPU_TOP,
+
     /*Temporary registers are stored on the stack, and are not guaranteed to
       be preserved across uOPs. They will not be written back if they will
       not be read again.*/