Update EBO statich_assert.

Author: DanielCChen

llvm/include/llvm/ADT/APFloat.h

@@ -1477,12 +1477,6 @@ class APFloat : public APFloatBase {
   friend class APFloatEBOChecker;
 };
 
-class APFloatEBOChecker {
-  static_assert(sizeof(APFloat) == sizeof(APFloat::U),
-                "Empty base class optimization is not performed.");
-};
-
-
 /// See friend declarations above.
 ///
 /// These additional declarations are required in order to compile LLVM with IBM

llvm/lib/Support/APFloat.cpp

@@ -99,6 +99,11 @@ enum class fltNanEncoding {
   NegativeZero,
 };
 
+class APFloatEBOChecker {
+  static_assert(sizeof(APFloat) == sizeof(APFloat::U),
+                "Empty base class optimization is not performed.");
+};
+
 /* Represents floating point arithmetic semantics.  */
 struct fltSemantics {
   /* The largest E such that 2^E is representable; this matches the