File restore-llvm10-abi.patch of Package llvm10

diff --git a/include/llvm/Analysis/ValueLattice.h b/include/llvm/Analysis/ValueLattice.h
index 415c32e..b8e538a 100644
--- a/include/llvm/Analysis/ValueLattice.h
+++ b/include/llvm/Analysis/ValueLattice.h
@@ -31,6 +31,11 @@ class ValueLatticeElement {
     /// "nothing known yet".
     unknown,
 
+    /// This Value is an UndefValue constant or produces undef. Undefined values
+    /// can be merged with constants (or single element constant ranges),
+    /// assuming all uses of the result will be replaced.
+    undef,
+
     /// This Value has a specific constant value.  (For constant integers,
     /// constantrange is used instead.  Integer typed constantexprs can appear
     /// as constant.)
@@ -45,12 +50,7 @@ class ValueLatticeElement {
     constantrange,
 
     /// We can not precisely model the dynamic values this value might take.
-    overdefined,
-
-    /// This Value is an UndefValue constant or produces undef. Undefined values
-    /// can be merged with constants (or single element constant ranges),
-    /// assuming all uses of the result will be replaced.
-    undef
+    overdefined
   };
 
   ValueLatticeElementTy Tag;