Add support for passing -main-file-name all the way through to

the assembler.

Part of PR14624

llvm-svn: 170390

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/tools/llvm-mc/llvm-mc.cpp b/llvm/tools/llvm-mc/llvm-mc.cpp
index c12a93d1716..930f528668f 100644
--- a/llvm/tools/llvm-mc/llvm-mc.cpp
+++ b/llvm/tools/llvm-mc/llvm-mc.cpp
@@ -161,6 +161,10 @@ static cl::opt<std::string>
 DebugCompilationDir("fdebug-compilation-dir",
                     cl::desc("Specifies the debug info's compilation dir"));
 
+static cl::opt<std::string>
+MainFileName("main-file-name",
+             cl::desc("Specifies the name we should consider the input file"));
+
 enum ActionType {
   AC_AsLex,
   AC_Assemble,
@@ -397,6 +401,8 @@ int main(int argc, char **argv) {
     Ctx.setDwarfDebugFlags(StringRef(DwarfDebugFlags));
   if (!DebugCompilationDir.empty())
     Ctx.setCompilationDir(DebugCompilationDir);
+  if (!MainFileName.empty())
+    Ctx.setMainFileName(MainFileName);
 
   // Package up features to be passed to target/subtarget
   std::string FeaturesStr;