1552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines/* 288cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross * Copyright 2017, The Android Open Source Project 3552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * 4552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * Licensed under the Apache License, Version 2.0 (the "License"); 5552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * you may not use this file except in compliance with the License. 6552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * You may obtain a copy of the License at 7552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * 8552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * http://www.apache.org/licenses/LICENSE-2.0 9552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * 10552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * Unless required by applicable law or agreed to in writing, software 11552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * distributed under the License is distributed on an "AS IS" BASIS, 12552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * See the License for the specific language governing permissions and 14552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines * limitations under the License. 15552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines */ 16552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines 1788cd94d5165bf8a266d3f3095946fc25bc4809afDavid Grossnamespace llvm { 1888cd94d5165bf8a266d3f3095946fc25bc4809afDavid Grossclass Function; 1988cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross} 20552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines 21552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hinesnamespace slang { 22552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines 2388cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross// Remove any readnone/readonly attributes from function parameters, 2488cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross// and remove any argmemonly attributes from functions. 2588cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross// 26552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines// Jellybean's LLVM version didn't support readnone/readonly as anything 27552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines// other than function attributes, so it will fail verification otherwise. 28552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines// Since we never ran the verifier in Jellybean, it ends up with potential 29552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines// crashes deeper in CodeGen. 3088cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross// 3188cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross// Similarly, older LLVM versions don't support argmemonly as a function 3288cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross// attribute, and so it can trigger an llvm_unreachable assertion when 3388cd94d5165bf8a266d3f3095946fc25bc4809afDavid Gross// we attempt to write out bitcode. 3488cd94d5165bf8a266d3f3095946fc25bc4809afDavid Grossbool stripUnknownAttributes(llvm::Function &F); 35552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines 36552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines} // namespace slang 37