[clang] [clang] Remove separate evaluation step for static class member init. (PR #142713)

[Eli Friedman via cfe-commits]

================
@@ -143,3 +143,8 @@ namespace fold_initializer {
   const float A::f = __builtin_is_constant_evaluated();
   static_assert(fold(A::f == 1.0f));
 }
+
+struct GH99680 {
+  static const int x = 1/(1-__builtin_is_constant_evaluated()); // 
expected-error {{in-class initializer for static data member is not a constant 
expression}} \
+    // expected-note {{division by zero}}
----------------
efriedma-quic wrote:

That said, I don't want to think about how to generate an understandable 
diagnostic for `static const int x = 1/(1-__builtin_is_constant_evaluated()) + 
1/__builtin_is_constant_evaluated();`.

https://github.com/llvm/llvm-project/pull/142713
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