llvm-mc: Support -arch as a simplified form of -triple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98417 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index 03953c7..48e0d3d 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -26,6 +26,7 @@
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Host.h"
#include "llvm/System/Signals.h"
#include "llvm/Target/TargetAsmBackend.h"
#include "llvm/Target/TargetAsmParser.h"
@@ -76,9 +77,12 @@
cl::value_desc("directory"), cl::Prefix);
static cl::opt<std::string>
+ArchName("arch", cl::desc("Target arch to assemble for, "
+ "see -version for available targets"));
+
+static cl::opt<std::string>
TripleName("triple", cl::desc("Target triple to assemble for, "
- "see -version for available targets"),
- cl::init(LLVM_HOSTTRIPLE));
+ "see -version for available targets"));
enum ActionType {
AC_AsLex,
@@ -98,6 +102,15 @@
clEnumValEnd));
static const Target *GetTarget(const char *ProgName) {
+ // Figure out the target triple.
+ if (TripleName.empty())
+ TripleName = sys::getHostTriple();
+ if (!ArchName.empty()) {
+ llvm::Triple TT(TripleName);
+ TT.setArchName(ArchName);
+ TripleName = TT.str();
+ }
+
// Get the target specific parser.
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);