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Treat the weak export of block runtime symbols as a deployment-target

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feature akin to the ARC runtime checks.  Removes a terrible hack where
IR gen needed to find the declarations of those symbols in the translation
unit.

llvm-svn: 139404
This commit is contained in:
John McCall
2011-09-09 20:41:01 +00:00
parent e1378a4313
commit 7959fee258
12 changed files with 84 additions and 171 deletions
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3
clang/lib/Frontend/CompilerInvocation.cpp
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@@ -665,6 +665,8 @@ static void LangOptsToArgs(const LangOptions &Opts,
Res.push_back("-pthread");
if (Opts.Blocks)
Res.push_back("-fblocks");
if (Opts.BlocksRuntimeOptional)
Res.push_back("-fblocks-runtime-optional");
if (Opts.EmitAllDecls)
Res.push_back("-femit-all-decls");
if (Opts.MathErrno)
@@ -1667,6 +1669,7 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
Opts.Blocks = Args.hasArg(OPT_fblocks);
Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);