allow opt to take a -mtriple option

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154959 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 30da863b41146712245bd13efb39184015ef5c6a..a5b0511fd980fd0735d6e6fb89976524bc463272 100644 (file)
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -114,6 +114,9 @@ static cl::opt<bool>
 OptLevelO3("O3",
            cl::desc("Optimization level 3. Similar to llvm-gcc -O3"));
 
+static cl::opt<std::string>
+TargetTriple("mtriple", cl::desc("Override target triple for module"));
+
 static cl::opt<bool>
 UnitAtATime("funit-at-a-time",
             cl::desc("Enable IPO. This is same as llvm-gcc's -funit-at-a-time"),
@@ -512,6 +515,10 @@ int main(int argc, char **argv) {
     return 1;
   }
 
+  // If we are supposed to override the target triple, do so now.
+  if (!TargetTriple.empty())
+    M->setTargetTriple(Triple::normalize(TargetTriple));
+
   // Figure out what stream we are supposed to write to...
   OwningPtr<tool_output_file> Out;
   if (NoOutput) {