Fix bug 3140.
Print a single parameter .file directive if we have an ELF target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60480 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index bfc2e35..b640a58 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -142,6 +142,14 @@
GCModuleInfo *MI = getAnalysisToUpdate<GCModuleInfo>();
assert(MI && "AsmPrinter didn't require GCModuleInfo?");
+
+ if (TAI->hasSingleParameterDotFile()) {
+ /* Very minimal debug info. It is ignored if we emit actual
+ debug info. If we don't, this at helps the user find where
+ a function came from. */
+ O << "\t.file\t\"" << M.getModuleIdentifier() << "\"\n";
+ }
+
for (GCModuleInfo::iterator I = MI->begin(), E = MI->end(); I != E; ++I)
if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*I))
MP->beginAssembly(O, *this, *TAI);