diff --git a/.gitignore b/.gitignore
index e7f5d786ad7..e4a13ebaaba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,8 @@
 *.dSYM
 *.d
 *.o
+*.ll
+*.bc
 *.aux
 *.cp
 *.fn
diff --git a/src/Makefile b/src/Makefile
index ad82fec2028..0cde6221a1a 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -189,6 +189,7 @@ ifdef CFG_LLVM_CONFIG
     lltrans.ml llemit.ml)
   LLC := "$(shell $(CFG_LLVM_CONFIG) --bindir)/llc"
   CFG_LLC_CFLAGS := -march=x86
+  LLVM-DIS := "$(shell $(CFG_LLVM_CONFIG) --bindir)/llvm-dis"
   $(info cfg: found llvm-config at $(CFG_LLVM_CONFIG))
 else
   VARIANT=x86
@@ -664,6 +665,11 @@ test/bench/shootout/%.x86$(CFG_EXE_SUFFIX): test/bench/shootout/%.rs $(REQ)
 	@$(call CFG_ECHO, compile [x86]: $<)
 	$(BOOT) -o $@ $<
 
+%.ll: %.bc
+	@$(call CFG_ECHO, dis [llvm]: $<)
+	$(CFG_QUIET)$(LLVM-DIS) -o $@ $<
+
+
 %.s: %.bc
 	@$(call CFG_ECHO, compile [llvm]: $<)
 	$(CFG_QUIET)$(LLC) $(CFG_LLC_CFLAGS) -o $@ $<