[PATCH] D44930: [WebAssembly] Add exception and selector intrinsics

[Heejin Ahn via Phabricator via llvm-commits]

aheejin created this revision.
aheejin added a reviewer: dschuff.
Herald added subscribers: llvm-commits, sunfish, jgravelle-google, sbc100, jfb.

Since wasm EH does not use landingpad instructions, these instructions
provide exception pointer and selector values until we lower them in
WasmEHPrepare.


Repository:
  rL LLVM

https://reviews.llvm.org/D44930

Files:
  include/llvm/IR/IntrinsicsWebAssembly.td


Index: include/llvm/IR/IntrinsicsWebAssembly.td
===================================================================
--- include/llvm/IR/IntrinsicsWebAssembly.td
+++ include/llvm/IR/IntrinsicsWebAssembly.td
@@ -39,4 +39,10 @@
 def int_wasm_throw : Intrinsic<[], [llvm_i32_ty, llvm_ptr_ty],
                                [Throws, IntrNoReturn]>;
 def int_wasm_rethrow : Intrinsic<[], [], [Throws, IntrNoReturn]>;
+
+// Since wasm does not use landingpad instructions, these instructions return
+// exception pointer and selector values until we lower them in WasmEHPrepare.
+def int_wasm_get_exception : Intrinsic<[llvm_ptr_ty], [], [IntrHasSideEffects]>;
+def int_wasm_get_ehselector : Intrinsic<[llvm_i32_ty], [],
+                                        [IntrHasSideEffects]>;
 }


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