3 files changed, 9 insertions, 8 deletions
diff --git a/lib/hipe/llvm/hipe_llvm.erl b/lib/hipe/llvm/hipe_llvm.erl
index 641d3fda0a..ccd40162cb 100644
--- a/lib/hipe/llvm/hipe_llvm.erl
+++ b/lib/hipe/llvm/hipe_llvm.erl
@@ -1005,11 +1005,12 @@ pp_ins(Dev, Ver, I) ->
       write(Dev, [" ", adj_stack_offset(I),")\n"]);
     #llvm_meta{} ->
       write(Dev, ["!", meta_id(I), " = !{ "]),
-      write(Dev, string:join([if is_list(Op) -> ["!\"", Op, "\""];
-				 is_integer(Op) -> ["i32 ", integer_to_list(Op)];
-				 is_record(Op, llvm_meta) ->
-				  ["!", meta_id(Op)]
-			      end || Op <- meta_operands(I)], ", ")),
+      write(Dev, lists:join(", ",
+                            [if is_list(Op) -> ["!\"", Op, "\""];
+                                is_integer(Op) -> ["i32 ", integer_to_list(Op)];
+                                is_record(Op, llvm_meta) ->
+                                 ["!", meta_id(Op)]
+                             end || Op <- meta_operands(I)])),
       write(Dev, " }\n");
     Other ->
       exit({?MODULE, pp_ins, {"Unknown LLVM instruction", Other}})
diff --git a/lib/hipe/llvm/hipe_llvm_main.erl b/lib/hipe/llvm/hipe_llvm_main.erl
index 4eec0c752b..54c435c127 100644
--- a/lib/hipe/llvm/hipe_llvm_main.erl
+++ b/lib/hipe/llvm/hipe_llvm_main.erl
@@ -154,7 +154,7 @@ compiler_target_opt() ->
 
 %% @doc Join options.
 fix_opts(Opts) ->
-  string:join(Opts, " ").
+  lists:flatten(lists:join(" ", Opts)).
 
 %% @doc Translate optimization-level flag (default is "O2").
 trans_optlev_flag(Tool, Options) ->
diff --git a/lib/hipe/llvm/hipe_rtl_to_llvm.erl b/lib/hipe/llvm/hipe_rtl_to_llvm.erl
index 79e1bfd381..934717efc1 100644
--- a/lib/hipe/llvm/hipe_rtl_to_llvm.erl
+++ b/lib/hipe/llvm/hipe_rtl_to_llvm.erl
@@ -1537,7 +1537,7 @@ declare_switch_table({Name, {switch, {TableType, Labels, _, _}, _}}, FunName) ->
   LabelList = [mk_jump_label(L) || L <- Labels],
   Fun1 = fun(X) -> "i8* blockaddress(@" ++ FunName ++ ", " ++ X ++ ")" end,
   List2 = lists:map(Fun1, LabelList),
-  List3 = string:join(List2, ",\n"),
+  List3 = lists:flatten(lists:join(",\n", List2)),
   List4 = "[\n" ++ List3 ++ "\n]\n",
   hipe_llvm:mk_const_decl("@" ++ Name, "constant", TableType, List4).
 
@@ -1553,7 +1553,7 @@ declare_closure_labels(ClosureLabels, Relocs, Fun) ->
   Relocs1 = relocs_store("table_closures", {table_closures, ArityList}, Relocs),
   List2 =
     ["i8* blockaddress(@" ++ FunName ++ ", " ++ L ++ ")" || L <- LabelList],
-  List3 = string:join(List2, ",\n"),
+  List3 = lists:flatten(lists:join(",\n", List2)),
   List4 = "[\n" ++ List3 ++ "\n]\n",
   NrLabels = length(LabelList),
   ByteTyPtr = hipe_llvm:mk_pointer(hipe_llvm:mk_int(?BITS_IN_BYTE)),