Author: aheejin Date: Thu Jun 29 17:44:01 2017 New Revision: 306775 URL: http://llvm.org/viewvc/llvm-project?rev=306775&view=rev Log: [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 Modified: cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def cfe/trunk/lib/CodeGen/CGBuiltin.cpp cfe/trunk/test/CodeGen/builtins-wasm.c Modified: cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def?rev=306775&r1=306774&r2=306775&view=diff ============================================================================== --- cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def (original) +++ cfe/trunk/include/clang/Basic/BuiltinsWebAssembly.def Thu Jun 29 17:44:01 2017 @@ -21,4 +21,8 @@ BUILTIN(__builtin_wasm_current_memory, "z", "n") BUILTIN(__builtin_wasm_grow_memory, "zz", "n") +// Exception handling builtins. +BUILTIN(__builtin_wasm_throw, "vUiv*", "r") +BUILTIN(__builtin_wasm_rethrow, "v", "r") + #undef BUILTIN Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=306775&r1=306774&r2=306775&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original) +++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Thu Jun 29 17:44:01 2017 @@ -9372,6 +9372,16 @@ Value *CodeGenFunction::EmitWebAssemblyB 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; Modified: cfe/trunk/test/CodeGen/builtins-wasm.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins-wasm.c?rev=306775&r1=306774&r2=306775&view=diff ============================================================================== --- cfe/trunk/test/CodeGen/builtins-wasm.c (original) +++ cfe/trunk/test/CodeGen/builtins-wasm.c Thu Jun 29 17:44:01 2017 @@ -14,3 +14,15 @@ __SIZE_TYPE__ f2(__SIZE_TYPE__ delta) { // WEBASSEMBLY32: call i32 @llvm.wasm.grow.memory.i32(i32 %{{.*}}) // WEBASSEMBLY64: call i64 @llvm.wasm.grow.memory.i64(i64 %{{.*}}) } + +void f3(unsigned int tag, void *obj) { + return __builtin_wasm_throw(tag, obj); +// WEBASSEMBLY32: call void @llvm.wasm.throw(i32 %{{.*}}, i8* %{{.*}}) +// WEBASSEMBLY64: call void @llvm.wasm.throw(i32 %{{.*}}, i8* %{{.*}}) +} + +void f4() { + return __builtin_wasm_rethrow(); +// WEBASSEMBLY32: call void @llvm.wasm.rethrow() +// WEBASSEMBLY64: call void @llvm.wasm.rethrow() +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
