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37 lines
1.3 KiB
37 lines
1.3 KiB
/*
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* Copyright 2017, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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namespace llvm {
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class Function;
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}
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namespace slang {
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// Remove any readnone/readonly attributes from function parameters,
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// and remove any argmemonly attributes from functions.
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//
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// Jellybean's LLVM version didn't support readnone/readonly as anything
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// other than function attributes, so it will fail verification otherwise.
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// Since we never ran the verifier in Jellybean, it ends up with potential
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// crashes deeper in CodeGen.
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//
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// Similarly, older LLVM versions don't support argmemonly as a function
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// attribute, and so it can trigger an llvm_unreachable assertion when
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// we attempt to write out bitcode.
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bool stripUnknownAttributes(llvm::Function &F);
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} // namespace slang
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