[clang] [CIR] Upstream Cast kinds for ComplexType (PR #149717)

[Henrich Lauko via cfe-commits]

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@@ -114,19 +92,42 @@ void LoweringPreparePass::lowerCastOp(cir::CastOp op) {
     break;
 
   case cir::CastKind::float_complex_to_real:
-  case cir::CastKind::int_complex_to_real:
-  case cir::CastKind::float_complex_to_bool:
+  case cir::CastKind::int_complex_to_real: {
+    loweredValue = lowerComplexToScalarCast(getContext(), op, op.getKind());
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xlauko wrote:

This looks fishy, why is it `op.getKind()` here?

https://github.com/llvm/llvm-project/pull/149717