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-rw-r--r--clang/lib/Frontend/InitPreprocessor.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 617b6aabcc7..a7ce2868a63 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -998,6 +998,11 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
Builder.defineMacro("__nullable", "_Nullable");
}
+ // Add a macro to differentiate between regular iOS/tvOS/watchOS targets and
+ // the corresponding simulator targets.
+ if (TI.getTriple().isOSDarwin() && TI.getTriple().isSimulatorEnvironment())
+ Builder.defineMacro("__APPLE_EMBEDDED_SIMULATOR__", "1");
+
// OpenMP definition
// OpenMP 2.2:
// In implementations that support a preprocessor, the _OPENMP
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