[WebAssembly] Add throw/rethrow builtins for exception handling
Summary:
Add new builtins for throw/rethrow instructions. This follows exception handling
handling proposal in
https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md
Reviewers: sunfish, dschuff
Reviewed By: dschuff
Subscribers: jfb, dschuff, sbc100, jgravelle-google
Differential Revision: https://reviews.llvm.org/D34783
llvm-svn: 306775
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index a6451b7..2a6e92e 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -9372,6 +9372,16 @@
Value *Callee = CGM.getIntrinsic(Intrinsic::wasm_grow_memory, X->getType());
return Builder.CreateCall(Callee, X);
}
+ case WebAssembly::BI__builtin_wasm_throw: {
+ Value *Tag = EmitScalarExpr(E->getArg(0));
+ Value *Obj = EmitScalarExpr(E->getArg(1));
+ Value *Callee = CGM.getIntrinsic(Intrinsic::wasm_throw);
+ return Builder.CreateCall(Callee, {Tag, Obj});
+ }
+ case WebAssembly::BI__builtin_wasm_rethrow: {
+ Value *Callee = CGM.getIntrinsic(Intrinsic::wasm_rethrow);
+ return Builder.CreateCall(Callee);
+ }
default:
return nullptr;