start wiring up support for target-specific -mfoo options like -msse
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65881 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/clang.cpp b/Driver/clang.cpp
index f402a20..54e93f8 100644
--- a/Driver/clang.cpp
+++ b/Driver/clang.cpp
@@ -517,6 +517,12 @@
static llvm::cl::opt<bool>
Ansi("ansi", llvm::cl::desc("Equivalent to specifying -std=c89."));
+
+static llvm::cl::list<std::string>
+TargetOptions("m", llvm::cl::Prefix, llvm::cl::value_desc("option"),
+ llvm::cl::desc("Target-specific options, such as -msse3"));
+
+
// FIXME: add:
// -fdollars-in-identifiers
static void InitializeLanguageStandard(LangOptions &Options, LangKind LK,
@@ -524,6 +530,23 @@
// Allow the target to set the default the langauge options as it sees fit.
Target->getDefaultLangOptions(Options);
+ // If the user specified any -mfoo options, pass them to the target for
+ // validation and processing.
+ if (!TargetOptions.empty()) {
+ std::string ErrorStr;
+ int Opt = Target->HandleTargetOptions(&TargetOptions[0],
+ TargetOptions.size(), ErrorStr);
+ if (Opt != -1) {
+ if (ErrorStr.empty())
+ fprintf(stderr, "invalid command line option '%s'\n",
+ TargetOptions[Opt].c_str());
+ else
+ fprintf(stderr, "command line option '%s': %s\n",
+ TargetOptions[Opt].c_str(), ErrorStr.c_str());
+ exit(1);
+ }
+ }
+
if (Ansi) // "The -ansi option is equivalent to -std=c89."
LangStd = lang_c89;