Add -mtrap_function=<> option. rdar://9257465
llvm-svn: 129145
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index e4f88bc..9eac835 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -542,6 +542,8 @@
def maes : Flag<"-maes">, Group<m_x86_Features_Group>;
def mavx : Flag<"-mavx">, Group<m_x86_Features_Group>;
def mthumb : Flag<"-mthumb">, Group<m_Group>;
+def mtrap_function_EQ : Joined<"-mtrap-function=">, Group<m_Group>,
+ HelpText<"Issue call to specified function rather than a trap instruction">;
def mtune_EQ : Joined<"-mtune=">, Group<m_Group>;
def multi__module : Flag<"-multi_module">;
def multiply__defined__unused : Separate<"-multiply_defined_unused">;
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 9e0eab3..29f8f83 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -605,6 +605,17 @@
CmdArgs.push_back("-neon");
}
+ // Forward -mtrap_function= options to the backend.
+ for (arg_iterator it = Args.filtered_begin(options::OPT_mtrap_function_EQ),
+ ie = Args.filtered_end(); it != ie; ++it) {
+ const Arg *A = *it;
+ A->claim();
+ assert(A->getNumValues() == 1 && "-mtrap_function= expects one argument.");
+ llvm::StringRef FuncName = A->getValue(Args, 0);
+ CmdArgs.push_back("-backend-option");
+ CmdArgs.push_back(Args.MakeArgString("-arm-trap-func=" + FuncName));
+ }
+
// Kernel code has more strict alignment requirements.
if (KernelOrKext) {
CmdArgs.push_back("-backend-option");