[clang] [CIR] Upstream TryCallOp (PR #165303)

[Andy Kaylor via cfe-commits]

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@@ -2707,6 +2707,98 @@ def CIR_CallOp : CIR_CallOpBase<"call", [NoRegionArguments]> {
   ];
 }
 
+def CIR_TryCallOp : CIR_CallOpBase<"try_call",[
+  DeclareOpInterfaceMethods<BranchOpInterface>,
+  Terminator, AttrSizedOperandSegments
+]> {
+  let summary = "try_call operation";
+
+  let description = [{
+    Mostly similar to cir.call but requires two destination
+    branches, one for handling exceptions in case its thrown and
+    the other one to follow on regular control-flow.
+
+    Example:
+
+    ```mlir
+    // Direct call
+    %result = cir.try_call @division(%a, %b) ^continue, ^landing_pad 
+      : (f32, f32) -> f32
+    ```
+  }];
+
+  let arguments = !con((ins
+    Variadic<CIR_AnyType>:$contOperands,
+    Variadic<CIR_AnyType>:$landingPadOperands
+  ), commonArgs);
+
+  let results = (outs Optional<CIR_AnyType>:$result);
+  let successors = (successor AnySuccessor:$cont, AnySuccessor:$landing_pad);
----------------
andykaylor wrote:

The destinations are referred to as the normal destination and the unwind destination in the LLVM invoke instruction. I think it would be helpful to use the same terminology here.

https://github.com/llvm/llvm-project/pull/165303