Merge branch 'egil/maps/OTP-11616'

* egil/maps/OTP-11616: (112 commits)
  compiler: Add core compile test for maps
  compiler: Fix core parse for Maps
  compiler: Fixup #map_pair{} spec
  erts: Strengthen map_SUITE tests
  erts: Update maps_fold test to respect maps:fold/3
  stdlib: Make maps:fold/3 order-independent
  erts: Fixup enif_make_map_put on windows
  erts: Update preloaded erts_internal.beam
  hipe: Fixup update cerl pretty printer
  erts: Add map construction to driver API
  dialyzer: Add maps tests
  dialyzer: Remove dead code
  dialyzer: Reflect map_pair core changes in dialyzer
  hipe: Update cerl pretty printer
  compiler: Update inliner tests
  compiler: Squash #c_map_pair_*{} to #c_map_pair{}
  compiler: Squash #k_map_pair_*{} to #k_map_pair{}
  preloaded: Fixup export cmp_term in erts_internal
  erts: Change 'size' argument of enif_get_map_size from int* to size_t*
  erts: Fix compile error for halfword emulator
  ...

1 files changed, 8 insertions, 4 deletions

diff --git a/erts/emulator/beam/erl_bif_op.c b/erts/emulator/beam/erl_bif_op.c
index adac0052d6..37dd6457db 100644
--- a/erts/emulator/beam/erl_bif_op.c
+++ b/erts/emulator/beam/erl_bif_op.c
@@ -36,6 +36,7 @@
 #include "dist.h"
 #include "erl_version.h"
 #include "erl_binary.h"
+#include "erl_map.h"
 
 BIF_RETTYPE and_2(BIF_ALIST_2)
 {
@@ -321,7 +322,10 @@ BIF_RETTYPE is_record_3(BIF_ALIST_3)
     BIF_RET(am_false);
 }
 	
-
-    
-
-
+BIF_RETTYPE is_map_1(BIF_ALIST_1)
+{
+    if (is_map(BIF_ARG_1)) {
+	BIF_RET(am_true);
+    }
+    BIF_RET(am_false);
+}