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``` /// Symbols can be appended with "(.__uniq.xxxx)?.llvm.yyyy" where "xxxx" and /// "yyyy" are numbers that could change between builds. We need to use the root /// symbol name before this suffix so these symbols can be matched with profiles /// which may have different suffixes. ``` Just like what we are doing in BP, https://github.com/llvm/llvm-project/blob/main/lld/MachO/BPSectionOrderer.cpp#L127 the patch removes the suffixes when parsing the order file and getting the symbol priority to have a better symbol match. --------- Co-authored-by: Sharon Xu <sharonxu@fb.com> Co-authored-by: Ellis Hoag <ellis.sparky.hoag@gmail.com>
23 lines
777 B
C++
23 lines
777 B
C++
//===- Utils.cpp ------------------------------------------------*- C++-*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//===----------------------------------------------------------------------===//
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//
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// The file defines utils functions that can be shared across archs.
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//
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//===----------------------------------------------------------------------===//
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#include "lld/Common/Utils.h"
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using namespace llvm;
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using namespace lld;
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StringRef lld::utils::getRootSymbol(StringRef name) {
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name.consume_back(".Tgm");
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auto [P0, S0] = name.rsplit(".llvm.");
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auto [P1, S1] = P0.rsplit(".__uniq.");
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return P1;
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}
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