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

[Henrich Lauko via cfe-commits]

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@@ -1135,6 +1139,31 @@ LValue ScalarExprEmitter::emitCompoundAssignLValue(
   return lhsLV;
 }
 
+mlir::Value ScalarExprEmitter::emitComplexToScalarConversion(mlir::Location lov,
+                                                             mlir::Value value,
+                                                             CastKind kind,
+                                                             QualType destTy) {
+  cir::CastKind castOpKind;
+  switch (kind) {
+  case CK_FloatingComplexToReal:
+    castOpKind = cir::CastKind::float_complex_to_real;
+    break;
+  case CK_IntegralComplexToReal:
+    castOpKind = cir::CastKind::int_complex_to_real;
+    break;
+  case CK_FloatingComplexToBoolean:
+    castOpKind = cir::CastKind::float_complex_to_bool;
+    break;
+  case CK_IntegralComplexToBoolean:
+    castOpKind = cir::CastKind::int_complex_to_bool;
+    break;
+  default:
+    llvm_unreachable("invalid complex-to-scalar cast kind");
+  }
----------------
xlauko wrote:

Same here.

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