diff options
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
| -rw-r--r-- | clang/lib/Frontend/CompilerInvocation.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp index abef4cf..50aaab6 100644 --- a/clang/lib/Frontend/CompilerInvocation.cpp +++ b/clang/lib/Frontend/CompilerInvocation.cpp @@ -1485,6 +1485,9 @@ void CompilerInvocation::GenerateCodeGenArgs( if (Opts.IBTSeal) GenerateArg(Args, OPT_mibt_seal, SA); + if (Opts.FunctionReturnThunks) + GenerateArg(Args, OPT_mfunction_return_EQ, "thunk-extern", SA); + for (const auto &F : Opts.LinkBitcodeFiles) { bool Builtint = F.LinkFlags == llvm::Linker::Flags::LinkOnlyNeeded && F.PropagateAttrs && F.Internalize; @@ -1825,6 +1828,27 @@ bool CompilerInvocation::ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; } + if (const Arg *A = Args.getLastArg(OPT_mfunction_return_EQ)) { + auto Val = llvm::StringSwitch<llvm::FunctionReturnThunksKind>(A->getValue()) + .Case("keep", llvm::FunctionReturnThunksKind::Keep) + .Case("thunk-extern", llvm::FunctionReturnThunksKind::Extern) + .Default(llvm::FunctionReturnThunksKind::Invalid); + // SystemZ might want to add support for "expolines." + if (!T.isX86()) + Diags.Report(diag::err_drv_argument_not_allowed_with) + << A->getSpelling() << T.getTriple(); + else if (Val == llvm::FunctionReturnThunksKind::Invalid) + Diags.Report(diag::err_drv_invalid_value) + << A->getAsString(Args) << A->getValue(); + else if (Val == llvm::FunctionReturnThunksKind::Extern && + Args.getLastArgValue(OPT_mcmodel_EQ).equals("large")) + Diags.Report(diag::err_drv_argument_not_allowed_with) + << A->getAsString(Args) + << Args.getLastArg(OPT_mcmodel_EQ)->getAsString(Args); + else + Opts.FunctionReturnThunks = static_cast<unsigned>(Val); + } + if (Opts.PrepareForLTO && Args.hasArg(OPT_mibt_seal)) Opts.IBTSeal = 1; |