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      1 // RUN: llvm-tblgen %s | FileCheck %s
      2 
      3 class A<int k, bits<2> x = 1> {
      4   int K = k;
      5   bits<2> Bits = x;
      6 }
      7 
      8 // CHECK: def a1
      9 // CHECK: Bits = { 0, 1 }
     10 def a1 : A<12>;
     11 
     12 // CHECK: def a2
     13 // CHECK: Bits = { 1, 0 }
     14 def a2 : A<13, 2>;
     15 
     16 // Here was the bug: X.Bits would get resolved to the default a1.Bits while
     17 // resolving the first template argument. When the second template argument
     18 // was processed, X would be set correctly, but Bits retained the default
     19 // value.
     20 class B<int k, A x = a1> {
     21   A X = x;
     22   bits<2> Bits = X.Bits;
     23 }
     24 
     25 // CHECK: def b1
     26 // CHECK: Bits = { 0, 1 }
     27 def b1 : B<27>;
     28 
     29 // CHECK: def b2
     30 // CHECK: Bits = { 1, 0 }
     31 def b2 : B<28, a2>;
     32 
     33 class C<A x = a1> {
     34   bits<2> Bits = x.Bits;
     35 }
     36 
     37 // CHECK: def c1
     38 // CHECK: Bits = { 0, 1 }
     39 def c1 : C;
     40 
     41 // CHECK: def c2
     42 // CHECK: Bits = { 1, 0 }
     43 def c2 : C<a2>;
     44