[llvm] [WebAssembly] Make llvm.wasm.throw invokable (PR #128104)

[Heejin Ahn via llvm-commits]

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@@ -3360,10 +3360,23 @@ void SelectionDAGBuilder::visitInvoke(const InvokeInst &I) {
     case Intrinsic::experimental_gc_statepoint:
       LowerStatepoint(cast<GCStatepointInst>(I), EHPadBB);
       break;
+    // wasm_throw, wasm_rethrow: This is usually done in visitTargetIntrinsic,
+    // but this intrinsic is special because it can be invoked, so we manually
+    // lower it to a DAG node here.
+    case Intrinsic::wasm_throw: {
+      SmallVector<SDValue, 8> Ops;
+      Ops.push_back(getControlRoot()); // inchain for the terminator node
+      const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+      Ops.push_back(
+          DAG.getTargetConstant(Intrinsic::wasm_throw, getCurSDLoc(),
+                                TLI.getPointerTy(DAG.getDataLayout())));
+      Ops.push_back(getValue(I.getArgOperand(0))); // tag
+      Ops.push_back(getValue(I.getArgOperand(1))); // thrown value
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aheejin wrote:

Done: https://github.com/llvm/llvm-project/pull/128104/commits/aa5fafda86059dded2dc5573ec160bbe0a786ba5

https://github.com/llvm/llvm-project/pull/128104