diff options
Diffstat (limited to 'clang/lib/Driver/Tools.cpp')
| -rw-r--r-- | clang/lib/Driver/Tools.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp index 25be6b48b66..71cbcb292f7 100644 --- a/clang/lib/Driver/Tools.cpp +++ b/clang/lib/Driver/Tools.cpp @@ -795,6 +795,14 @@ void Clang::AddARMTargetArgs(const ArgList &Args, options::OPT_mno_implicit_float, true)) CmdArgs.push_back("-no-implicit-float"); + + // llvm does not support reserving registers in general. There is support + // for reserving r9 on ARM though (defined as a platform-specific register + // in ARM EABI). + if (Args.hasArg(options::OPT_ffixed_r9)) { + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-arm-reserve-r9"); + } } // Translate MIPS CPU name alias option to CPU name. |
