diff options
Diffstat (limited to 'clang/lib')
| -rw-r--r-- | clang/lib/Driver/ToolChains/Clang.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp index b82cc2d4fa5..6bb76d80355 100644 --- a/clang/lib/Driver/ToolChains/Clang.cpp +++ b/clang/lib/Driver/ToolChains/Clang.cpp @@ -1462,6 +1462,30 @@ void Clang::AddMIPSTargetArgs(const ArgList &Args, A->claim(); } + Arg *GPOpt = Args.getLastArg(options::OPT_mgpopt, options::OPT_mno_gpopt); + Arg *ABICalls = + Args.getLastArg(options::OPT_mabicalls, options::OPT_mno_abicalls); + + // -mabicalls is the default for many MIPS environments, even with -fno-pic. + // -mgpopt is the default for static, -fno-pic environments but these two + // options conflict. We want to be certain that -mno-abicalls -mgpopt is + // the only case where -mllvm -mgpopt is passed. + // NOTE: We need a warning here or in the backend to warn when -mgpopt is + // passed explicitly when compiling something with -mabicalls + // (implictly) in affect. Currently the warning is in the backend. + bool NoABICalls = + ABICalls && ABICalls->getOption().matches(options::OPT_mno_abicalls); + bool WantGPOpt = GPOpt && GPOpt->getOption().matches(options::OPT_mgpopt); + // We quietly ignore -mno-gpopt as the backend defaults to -mno-gpopt. + if (NoABICalls && (!GPOpt || WantGPOpt)) { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back("-mgpopt"); + } else if ((!ABICalls || (!NoABICalls && ABICalls)) && WantGPOpt) + D.Diag(diag::warn_drv_unsupported_gpopt) << (ABICalls ? 0 : 1); + + if (GPOpt) + GPOpt->claim(); + if (Arg *A = Args.getLastArg(options::OPT_mcompact_branches_EQ)) { StringRef Val = StringRef(A->getValue()); if (mips::hasCompactBranches(CPUName)) { |
