diff --git a/include/sirit/sirit.h b/include/sirit/sirit.h
index c729595..7d2ae11 100644
--- a/include/sirit/sirit.h
+++ b/include/sirit/sirit.h
@@ -243,6 +243,11 @@ class Module {
     /// Result is true if Operand is false. Result is false if Operand is true.
     Id OpLogicalNot(Id result_type, Id operand);
 
+    // Conversion
+
+    /// Bit pattern-preserving type conversion.
+    Id OpBitcast(Id result_type, Id operand);
+
   private:
     Id AddCode(std::unique_ptr<Op> op);
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b48292f..c7fbfd3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -21,6 +21,7 @@ add_library(sirit
     insts/annotation.cpp
     insts/misc.cpp
     insts/logical.cpp
+    insts/conversion.cpp
 )
 target_include_directories(sirit
                            PUBLIC ../include
diff --git a/src/insts/conversion.cpp b/src/insts/conversion.cpp
new file mode 100644
index 0000000..4f13bf1
--- /dev/null
+++ b/src/insts/conversion.cpp
@@ -0,0 +1,20 @@
+/* This file is part of the sirit project.
+ * Copyright (c) 2018 ReinUsesLisp
+ * This software may be used and distributed according to the terms of the GNU
+ * Lesser General Public License version 2.1 or any later version.
+ */
+
+#include "common_types.h"
+#include "op.h"
+#include "sirit/sirit.h"
+#include <memory>
+
+namespace Sirit {
+
+Id Module::OpBitcast(Id result_type, Id operand) {
+    auto op{std::make_unique<Op>(spv::Op::OpBitcast, bound++, result_type)};
+    op->Add(operand);
+    return AddCode(std::move(op));
+}
+
+} // namespace Sirit
\ No newline at end of file
diff --git a/src/insts/logical.cpp b/src/insts/logical.cpp
new file mode 100644
index 0000000..41b73a1
--- /dev/null
+++ b/src/insts/logical.cpp
@@ -0,0 +1,20 @@
+/* This file is part of the sirit project.
+ * Copyright (c) 2018 ReinUsesLisp
+ * This software may be used and distributed according to the terms of the GNU
+ * Lesser General Public License version 2.1 or any later version.
+ */
+
+#include "common_types.h"
+#include "op.h"
+#include "sirit/sirit.h"
+#include <memory>
+
+namespace Sirit {
+
+Id Module::OpLogicalNot(Id result_type, Id operand) {
+    auto op{std::make_unique<Op>(spv::Op::OpLogicalNot, bound++, result_type)};
+    op->Add(operand);
+    return AddCode(std::move(op));
+}
+
+} // namespace Sirit
\ No newline at end of file