diff --git a/.gitignore b/.gitignore
index 72b746c12..46fd96e39 100644
--- a/.gitignore
+++ b/.gitignore
@@ -103,6 +103,7 @@ buck-out/
 /infer/bin/infer-run
 /infer/bin/InferCreateTraceViewLinks
 /infer/bin/InferUnit
+/infer/bin/llvm_sil
 /infer/man
 
 /infer/src/base/Version.ml
diff --git a/infer/src/.merlin b/infer/src/.merlin
index 228778e87..499eb37ff 100644
--- a/infer/src/.merlin
+++ b/infer/src/.merlin
@@ -36,6 +36,7 @@ PKG findlib.top
 PKG jane-street-headers
 PKG javalib
 PKG lambda-term
+PKG llair
 PKG lwt
 PKG lwt.log
 PKG lwt.react
diff --git a/infer/src/Makefile b/infer/src/Makefile
index 56a7247b8..dbafacdc6 100644
--- a/infer/src/Makefile
+++ b/infer/src/Makefile
@@ -283,6 +283,7 @@ clean:
 #	only existed in previous versions get removed as well
 	$(REMOVE) $(BIN_DIR)/Infer* $(BIN_DIR)/infer-* $(INFER_BIN){,.bc,.exe} $(INFER_BIN_ALIASES) \
 	  $(INFERUNIT_BIN) $(CHECKCOPYRIGHT_BIN)
+	$(REMOVE) $(BIN_DIR)/llvm_sil
 	$(REMOVE) $(INFER_CREATE_TRACEVIEW_LINKS_BIN)
 	$(REMOVE) atd/*_{j,t,v}.ml{,i} atd/clang_*
 	$(REMOVE) mod_dep.dot
diff --git a/infer/src/llvm/Makefile b/infer/src/llvm/Makefile
new file mode 100644
index 000000000..20511dc41
--- /dev/null
+++ b/infer/src/llvm/Makefile
@@ -0,0 +1,28 @@
+# Copyright (c) 2018 - present Facebook, Inc.
+# All rights reserved.
+#
+# This source code is licensed under the BSD style license found in the
+# LICENSE file in the root directory of this source tree. An additional grant
+# of patent rights can be found in the PATENTS file in the same directory.
+
+ROOT_DIR = ../../..
+include $(ROOT_DIR)/Makefile.config
+
+INFER_BUILD_DIR = ../_build/default
+
+default: llvm_sil
+
+$(BIN_DIR)/llvm_sil:
+	rm -f $(INFER_BUILD_DIR)/llvm_sil.ml
+	make -C .. infer
+	cp llvm_sil.ml $(INFER_BUILD_DIR)
+	cd $(INFER_BUILD_DIR) && \
+	  ocamlfind ocamlopt -package llair -linkpkg llvm_sil.ml -o $(BIN_DIR)/llvm_sil
+	rm -f $(INFER_BUILD_DIR)/llvm_sil.ml
+
+.PHONY: llvm_sil
+llvm_sil: $(BIN_DIR)/llvm_sil
+
+.PHONY: clean
+clean:
+	rm -f $(INFER_BUILD_DIR)/llvm_sil.ml $(BIN_DIR)/llvm_sil
diff --git a/infer/src/llvm/llvm_sil.ml b/infer/src/llvm/llvm_sil.ml
new file mode 100644
index 000000000..c15055181
--- /dev/null
+++ b/infer/src/llvm/llvm_sil.ml
@@ -0,0 +1,38 @@
+(*
+ * Copyright (c) 2018 - present Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *)
+
+open Import
+open Core_kernel
+open Llair_
+
+let main ~input ~output =
+  try
+    let program = Frontend.translate input in
+    Option.iter output ~f:(function
+      | "-" -> Format.printf "%a@." Llair.fmt program
+      | filename ->
+          Out_channel.with_file filename ~f:(fun oc ->
+              let ff = Format.formatter_of_out_channel oc in
+              Format.fprintf ff "%a@." Llair.fmt program ) ) ;
+    Format.printf "@\nRESULT: Success@."
+  with exn ->
+    let bt = Caml.Printexc.get_raw_backtrace () in
+    ( match exn with
+    | Frontend.Invalid_llvm msg ->
+        Format.printf "@\nRESULT: Invalid input: %s@." msg
+    | Unimplemented msg ->
+        Format.printf "@\nRESULT: Unimplemented: %s@." msg
+    | Failure msg -> Format.printf "@\nRESULT: Internal error: %s@." msg
+    | _ ->
+        Format.printf "@\nRESULT: Unknown error: %s@."
+          (Caml.Printexc.to_string exn) ) ;
+    Caml.Printexc.raise_with_backtrace exn bt
+
+
+;; main ~input:Caml.Sys.argv.(1) ~output:(Some "-")
diff --git a/sledge/SETUP.org b/sledge/SETUP.org
index f0e23ec04..b337ec4dc 100644
--- a/sledge/SETUP.org
+++ b/sledge/SETUP.org
@@ -27,16 +27,21 @@
      + opam pin edit llvm
        - edit llvm and conf-llvm version number to match that of the llvm clone (= 7.0.0)
        - when prompted, ok to save new opam file
-5. hush `ld: warning: directory not found for option '-L/opt/local/lib'`
+5. install llair for llvm_sil
+   - cd ~/path/to/sledge
+   - opam pin add -n -k git llair .
+     + when prompted, ok to create new package
+   - opam install llair
+6. hush `ld: warning: directory not found for option '-L/opt/local/lib'`
    - the zarith package adds a spurious linker option unless you have both brew and macports, so if you see this linker warning when compiling, execute
      + sudo mkdir -p /opt/local/lib
-6. install dev tools
+7. install dev tools
    - opam install merlin ocp-indent tuareg user-setup
    - install ocamlformat
-7. if needed: point new clang to xcode c++ lib
+8. if needed: point new clang to xcode c++ lib
    - cd ~/.local/llvm_$(opam config var switch)/include
    - ln -s /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++ .
-8. llvm dev workflow
+9. llvm dev workflow
    - modify llvm sources
    - cd ~/path/to/sledge/llvm/_build; ninja -j8
    - iterate
@@ -44,7 +49,7 @@
    - ninja -j8 && ninja ocaml_doc && ninja install && opam upgrade llvm
    - cd ~/path/to/sledge; make
    - it is not uncommon to get "inconsistent assumptions" errors: clean and re-make
-9. llvm emacs mode
-   - (add-to-list 'load-path (expand-file-name "~/path/to/sledge/llvm/utils/emacs"))
-   - (require 'llvm-mode)
-   - (require 'autodisass-llvm-bitcode)
+10. llvm emacs mode
+    - (add-to-list 'load-path (expand-file-name "~/path/to/sledge/llvm/utils/emacs"))
+    - (require 'llvm-mode)
+    - (require 'autodisass-llvm-bitcode)