Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/XRay/InstrumentationMap.h b/linux-x64/clang/include/llvm/XRay/InstrumentationMap.h
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+++ b/linux-x64/clang/include/llvm/XRay/InstrumentationMap.h
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+//===- InstrumentationMap.h - XRay Instrumentation Map ----------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines the interface for extracting the instrumentation map from an
+// XRay-instrumented binary.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_XRAY_INSTRUMENTATION_MAP_H
+#define LLVM_XRAY_INSTRUMENTATION_MAP_H
+
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/YAMLTraits.h"
+#include <cstdint>
+#include <unordered_map>
+#include <vector>
+
+namespace llvm {
+
+namespace xray {
+
+// Forward declare to make a friend.
+class InstrumentationMap;
+
+/// Loads the instrumentation map from |Filename|. This auto-deduces the type of
+/// the instrumentation map.
+Expected<InstrumentationMap> loadInstrumentationMap(StringRef Filename);
+
+/// Represents an XRay instrumentation sled entry from an object file.
+struct SledEntry {
+ /// Each entry here represents the kinds of supported instrumentation map
+ /// entries.
+ enum class FunctionKinds { ENTRY, EXIT, TAIL, LOG_ARGS_ENTER, CUSTOM_EVENT };
+
+ /// The address of the sled.
+ uint64_t Address;
+
+ /// The address of the function.
+ uint64_t Function;
+
+ /// The kind of sled.
+ FunctionKinds Kind;
+
+ /// Whether the sled was annotated to always be instrumented.
+ bool AlwaysInstrument;
+};
+
+struct YAMLXRaySledEntry {
+ int32_t FuncId;
+ yaml::Hex64 Address;
+ yaml::Hex64 Function;
+ SledEntry::FunctionKinds Kind;
+ bool AlwaysInstrument;
+ std::string FunctionName;
+};
+
+/// The InstrumentationMap represents the computed function id's and indicated
+/// function addresses from an object file (or a YAML file). This provides an
+/// interface to just the mapping between the function id, and the function
+/// address.
+///
+/// We also provide raw access to the actual instrumentation map entries we find
+/// associated with a particular object file.
+///
+class InstrumentationMap {
+public:
+ using FunctionAddressMap = std::unordered_map<int32_t, uint64_t>;
+ using FunctionAddressReverseMap = std::unordered_map<uint64_t, int32_t>;
+ using SledContainer = std::vector<SledEntry>;
+
+private:
+ SledContainer Sleds;
+ FunctionAddressMap FunctionAddresses;
+ FunctionAddressReverseMap FunctionIds;
+
+ friend Expected<InstrumentationMap> loadInstrumentationMap(StringRef);
+
+public:
+ /// Provides a raw accessor to the unordered map of function addresses.
+ const FunctionAddressMap &getFunctionAddresses() { return FunctionAddresses; }
+
+ /// Returns an XRay computed function id, provided a function address.
+ Optional<int32_t> getFunctionId(uint64_t Addr) const;
+
+ /// Returns the function address for a function id.
+ Optional<uint64_t> getFunctionAddr(int32_t FuncId) const;
+
+ /// Provide read-only access to the entries of the instrumentation map.
+ const SledContainer &sleds() const { return Sleds; };
+};
+
+} // end namespace xray
+
+namespace yaml {
+
+template <> struct ScalarEnumerationTraits<xray::SledEntry::FunctionKinds> {
+ static void enumeration(IO &IO, xray::SledEntry::FunctionKinds &Kind) {
+ IO.enumCase(Kind, "function-enter", xray::SledEntry::FunctionKinds::ENTRY);
+ IO.enumCase(Kind, "function-exit", xray::SledEntry::FunctionKinds::EXIT);
+ IO.enumCase(Kind, "tail-exit", xray::SledEntry::FunctionKinds::TAIL);
+ IO.enumCase(Kind, "log-args-enter",
+ xray::SledEntry::FunctionKinds::LOG_ARGS_ENTER);
+ IO.enumCase(Kind, "custom-event",
+ xray::SledEntry::FunctionKinds::CUSTOM_EVENT);
+ }
+};
+
+template <> struct MappingTraits<xray::YAMLXRaySledEntry> {
+ static void mapping(IO &IO, xray::YAMLXRaySledEntry &Entry) {
+ IO.mapRequired("id", Entry.FuncId);
+ IO.mapRequired("address", Entry.Address);
+ IO.mapRequired("function", Entry.Function);
+ IO.mapRequired("kind", Entry.Kind);
+ IO.mapRequired("always-instrument", Entry.AlwaysInstrument);
+ IO.mapOptional("function-name", Entry.FunctionName);
+ }
+
+ static constexpr bool flow = true;
+};
+
+} // end namespace yaml
+
+} // end namespace llvm
+
+LLVM_YAML_IS_SEQUENCE_VECTOR(xray::YAMLXRaySledEntry)
+
+#endif // LLVM_XRAY_INSTRUMENTATION_MAP_H