diff --git a/include/sirit/sirit.h b/include/sirit/sirit.h
index 9e50877..fc8c721 100644
--- a/include/sirit/sirit.h
+++ b/include/sirit/sirit.h
@@ -201,7 +201,10 @@ class Module {
     Id Name(Id target, const std::string& name);
 
     /// Assign a Result <id> to a string for use by other debug instructions.
-    Id OpString(const std::string& string);
+    Id String(const std::string& string);
+
+    /// Add source-level location information
+    Id OpLine(Id file, Literal line, Literal column);
 
     // Memory
 
diff --git a/src/insts/debug.cpp b/src/insts/debug.cpp
index 688862d..d61dec1 100644
--- a/src/insts/debug.cpp
+++ b/src/insts/debug.cpp
@@ -19,9 +19,19 @@ Id Module::Name(Id target, const std::string& name) {
     return target;
 }
 
-Id Module::OpString(const std::string& string) {
+Id Module::String(const std::string& string) {
     auto op{std::make_unique<Op>(spv::Op::OpString, bound++)};
     op->Add(string);
+    const auto id = op.get();
+    debug.push_back(std::move(op));
+    return id;
+}
+
+Id Module::OpLine(Id file, Literal line, Literal column) {
+    auto op{std::make_unique<Op>(spv::Op::OpLine)};
+    op->Add(file);
+    op->Add(line);
+    op->Add(column);
     return AddCode(std::move(op));
 }