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[Frontend] Emit the pre-stable-ABI bit when targeting older OS versions.

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This commit is contained in:
Mike Ash
2019-03-07 09:34:45 -05:00
parent fbe990481b
commit 082b3774ad
1 changed files with 5 additions and 1 deletions
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6
lib/Frontend/CompilerInvocation.cpp
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@@ -429,7 +429,11 @@ static bool ParseLangArgs(LangOptions &Opts, ArgList &Args,
Opts.EnableSILOpaqueValues |= Args.hasArg(OPT_enable_sil_opaque_values);
#if SWIFT_DARWIN_ENABLE_STABLE_ABI_BIT
Opts.UseDarwinPreStableABIBit = false;
Opts.UseDarwinPreStableABIBit =
(Target.isMacOSX() && Target.isMacOSXVersionLT(10, 14, 4)) ||
(Target.isiOS() && Target.isOSVersionLT(12, 2)) ||
(Target.isTvOS() && Target.isOSVersionLT(12, 2)) ||
(Target.isWatchOS() && Target.isOSVersionLT(5, 2));
#else
Opts.UseDarwinPreStableABIBit = true;
#endif