| 1 | //===--- XRayInstr.h --------------------------------------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | /// \file |
| 10 | /// Defines the clang::XRayInstrKind enum. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #ifndef LLVM_CLANG_BASIC_XRAYINSTR_H |
| 15 | #define LLVM_CLANG_BASIC_XRAYINSTR_H |
| 16 | |
| 17 | #include "clang/Basic/LLVM.h" |
| 18 | #include "llvm/ADT/StringRef.h" |
| 19 | #include "llvm/Support/MathExtras.h" |
| 20 | #include <cassert> |
| 21 | #include <cstdint> |
| 22 | |
| 23 | namespace clang { |
| 24 | |
| 25 | using XRayInstrMask = uint32_t; |
| 26 | |
| 27 | namespace XRayInstrKind { |
| 28 | |
| 29 | // TODO: Auto-generate these as we add more instrumentation kinds. |
| 30 | enum XRayInstrOrdinal : XRayInstrMask { |
| 31 | XRIO_FunctionEntry, |
| 32 | XRIO_FunctionExit, |
| 33 | XRIO_Custom, |
| 34 | XRIO_Typed, |
| 35 | XRIO_Count |
| 36 | }; |
| 37 | |
| 38 | constexpr XRayInstrMask None = 0; |
| 39 | constexpr XRayInstrMask FunctionEntry = 1U << XRIO_FunctionEntry; |
| 40 | constexpr XRayInstrMask FunctionExit = 1U << XRIO_FunctionExit; |
| 41 | constexpr XRayInstrMask Custom = 1U << XRIO_Custom; |
| 42 | constexpr XRayInstrMask Typed = 1U << XRIO_Typed; |
| 43 | constexpr XRayInstrMask All = FunctionEntry | FunctionExit | Custom | Typed; |
| 44 | |
| 45 | } // namespace XRayInstrKind |
| 46 | |
| 47 | struct XRayInstrSet { |
| 48 | bool has(XRayInstrMask K) const { |
| 49 | assert(llvm::isPowerOf2_32(K)); |
| 50 | return Mask & K; |
| 51 | } |
| 52 | |
| 53 | bool hasOneOf(XRayInstrMask K) const { return Mask & K; } |
| 54 | |
| 55 | void set(XRayInstrMask K, bool Value) { |
| 56 | Mask = Value ? (Mask | K) : (Mask & ~K); |
| 57 | } |
| 58 | |
| 59 | void clear(XRayInstrMask K = XRayInstrKind::All) { Mask &= ~K; } |
| 60 | |
| 61 | bool empty() const { return Mask == 0; } |
| 62 | |
| 63 | bool full() const { return Mask == XRayInstrKind::All; } |
| 64 | |
| 65 | XRayInstrMask Mask = 0; |
| 66 | }; |
| 67 | |
| 68 | /// Parses a command line argument into a mask. |
| 69 | XRayInstrMask parseXRayInstrValue(StringRef Value); |
| 70 | |
| 71 | /// Serializes a set into a list of command line arguments. |
| 72 | void serializeXRayInstrValue(XRayInstrSet Set, |
| 73 | SmallVectorImpl<StringRef> &Values); |
| 74 | |
| 75 | } // namespace clang |
| 76 | |
| 77 | #endif // LLVM_CLANG_BASIC_XRAYINSTR_H |
| 78 |