[clang] [clang][Interp] Implement ComplexToReal casts (PR #77294)

[Timm Baeder via cfe-commits]

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@@ -37,6 +37,18 @@ constexpr _Complex int I2 = {};
 static_assert(__real(I2) == 0, "");
 static_assert(__imag(I2) == 0, "");
 
+constexpr int ignoredCast() {
+  I2;
+  (int)I2;
+  /* (float)I2; FIXME*/
+  D1;
+  /* (int)D1; FIXME*/
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tbaederr wrote:

The commented-out tests need https://github.com/llvm/llvm-project/pull/77295 first.

https://github.com/llvm/llvm-project/pull/77294