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[Runtime] Remove the _swift_classIsSwiftMask variable. #37018

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Merged
merged 1 commit into from
Apr 23, 2021
Merged

[Runtime] Remove the _swift_classIsSwiftMask variable. #37018

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45 changes: 0 additions & 45 deletions include/swift/Runtime/BackDeployment.h
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27 changes: 7 additions & 20 deletions include/swift/Runtime/Config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -100,34 +100,21 @@
/// from ObjC classes?
#ifndef SWIFT_CLASS_IS_SWIFT_MASK

// Non-Apple platforms always use 1.
# if !defined(__APPLE__)
# define SWIFT_CLASS_IS_SWIFT_MASK 1ULL

// Builds for Swift-in-the-OS always use 2.
# elif SWIFT_BNI_OS_BUILD
# define SWIFT_CLASS_IS_SWIFT_MASK 2ULL

// Builds for Xcode always use 1.
# elif SWIFT_BNI_XCODE_BUILD
# define SWIFT_CLASS_IS_SWIFT_MASK 1ULL

// Compatibility hook libraries cannot rely on the "is swift" bit being either
// value, since they must work with both OS and Xcode versions of the libraries.
// Generate a reference to a nonexistent symbol so that we get obvious linker
// errors if we try.
# elif SWIFT_COMPATIBILITY_LIBRARY
# if SWIFT_COMPATIBILITY_LIBRARY
extern uintptr_t __COMPATIBILITY_LIBRARIES_CANNOT_CHECK_THE_IS_SWIFT_BIT_DIRECTLY__;
# define SWIFT_CLASS_IS_SWIFT_MASK __COMPATIBILITY_LIBRARIES_CANNOT_CHECK_THE_IS_SWIFT_BIT_DIRECTLY__

// Other builds (such as local builds on developers' computers)
// dynamically choose the bit at runtime based on the current OS
// version.
// Apple platforms always use 2
# elif defined(__APPLE__)
# define SWIFT_CLASS_IS_SWIFT_MASK 2ULL

// Non-Apple platforms always use 1.
# else
# define SWIFT_CLASS_IS_SWIFT_MASK _swift_classIsSwiftMask
# define SWIFT_CLASS_IS_SWIFT_MASK_GLOBAL_VARIABLE 1
# define SWIFT_BUILD_HAS_BACK_DEPLOYMENT 1
# include "BackDeployment.h"
# define SWIFT_CLASS_IS_SWIFT_MASK 1ULL

# endif
#endif
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64 changes: 0 additions & 64 deletions stdlib/public/runtime/BackDeployment.cpp
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1 change: 0 additions & 1 deletion stdlib/public/runtime/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,6 @@ set(swift_runtime_sources
AnyHashableSupport.cpp
Array.cpp
AutoDiffSupport.cpp
BackDeployment.cpp
Bincompat.cpp
Casting.cpp
CygwinPort.cpp
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