diff --git a/gcc/builtins.c b/gcc/builtins.c
index b981bcd281af29cdbb1d6bcc1e9f93b769708897..3d9c8aa38b44446aea03b2f4ddc59222f19ba078 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -28,6 +28,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "predict.h"
 #include "tm_p.h"
diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c
index 399ba975184e934bc061113286787840a7531291..a74301fa6de1897007635574ab36058572d953b3 100644
--- a/gcc/c-family/c-common.c
+++ b/gcc/c-family/c-common.c
@@ -25,6 +25,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "function.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "c-common.h"
 #include "gimple-expr.h"
 #include "tm_p.h"
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 5efad462f11f2954a65386b3b6b8d51bd61c51c1..913e026f54cc8464ba9cee0dbecd2a711458dc41 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -26,6 +26,7 @@
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "cfghooks.h"
 #include "cfgloop.h"
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c
index 702cd277ede8860c53d3ce4c03a8c6d81f7b5c5b..488902741504bc2f93424da6e80e83270d24edd2 100644
--- a/gcc/config/alpha/alpha.c
+++ b/gcc/config/alpha/alpha.c
@@ -26,6 +26,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "df.h"
 #include "tm_p.h"
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 946f308ca84e232af8af6eca4813464914cbd59c..97b3ef1673a98f406aed023f5715c35ebf69b07e 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -27,6 +27,7 @@
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "cfghooks.h"
 #include "df.h"
 #include "tm_p.h"
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 3ac115c64f717f928eeb8085fea941383121df85..00c5a3db569e0d1758a8e96b3ff1b9f4446b6ad7 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -23,6 +23,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "backend.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "cfghooks.h"
 #include "cfgloop.h"
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index ebd2c86b8d8f917248453070105b1fb5178bc7a3..1f3628b254cac4ef9ea0e72024fe309c4d0eb0da 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -26,6 +26,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "cfghooks.h"
 #include "df.h"
 #include "tm_p.h"
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 88f4038224a9cdc904cbf15b2a5833b6525702ab..3586a1001e7a920571b1be6d41f9a8e1345f33cc 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -28,6 +28,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "cfghooks.h"
 #include "df.h"
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 557009f8099736960e4a7371104543def9d00bb9..11bde4af87d2eb468707c0e02ea6747d29fdabb8 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -24,6 +24,7 @@
 #include "backend.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "cfghooks.h"
 #include "cfgloop.h"
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 254b72298a36d57625f9d6555e2c295e684178e8..80b8b0e34c84e155aa46e236768fb344b076eb59 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -27,6 +27,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "df.h"
 #include "tm_p.h"
diff --git a/gcc/genconditions.c b/gcc/genconditions.c
index e4f45b097cd01fdacb44916bde492160600f6113..d8b0ebba56b8db4bea9e0edced03293152e51d02 100644
--- a/gcc/genconditions.c
+++ b/gcc/genconditions.c
@@ -94,6 +94,7 @@ write_header (void)
 #include \"resource.h\"\n\
 #include \"diagnostic-core.h\"\n\
 #include \"reload.h\"\n\
+#include \"memmodel.h\"\n\
 #include \"tm-constrs.h\"\n");
 
   if (saw_eh_return)
diff --git a/gcc/genemit.c b/gcc/genemit.c
index 33040aac36da564cbab4ff66abf868671c17c951..d5e07a97a6d50f7b744e9d67ad49e72046e9df03 100644
--- a/gcc/genemit.c
+++ b/gcc/genemit.c
@@ -792,6 +792,7 @@ from the machine description file `md'.  */\n\n");
   printf ("#include \"reload.h\"\n");
   printf ("#include \"diagnostic-core.h\"\n");
   printf ("#include \"regs.h\"\n");
+  printf ("#include \"memmodel.h\"\n");
   printf ("#include \"tm-constrs.h\"\n");
   printf ("#include \"ggc.h\"\n");
   printf ("#include \"dumpfile.h\"\n");
diff --git a/gcc/genoutput.c b/gcc/genoutput.c
index f8c25ac4df0532de7f59a27f94280f2858ac12cd..59092580e49e27cc679e444606a892f08ab8c4bd 100644
--- a/gcc/genoutput.c
+++ b/gcc/genoutput.c
@@ -231,6 +231,7 @@ output_prologue (void)
   printf ("#include \"diagnostic-core.h\"\n");
   printf ("#include \"output.h\"\n");
   printf ("#include \"target.h\"\n");
+  printf ("#include \"memmodel.h\"\n");
   printf ("#include \"tm-constrs.h\"\n");
 }
 
diff --git a/gcc/genpeep.c b/gcc/genpeep.c
index 132cdced690a43aba222caa516f12302e561ede9..e1997e03e476de910c57f7854b7b62edd5360b8f 100644
--- a/gcc/genpeep.c
+++ b/gcc/genpeep.c
@@ -373,6 +373,7 @@ from the machine description file `md'.  */\n\n");
   printf ("#include \"except.h\"\n");
   printf ("#include \"diagnostic-core.h\"\n");
   printf ("#include \"flags.h\"\n");
+  printf ("#include \"memmodel.h\"\n");
   printf ("#include \"tm-constrs.h\"\n\n");
 
   printf ("extern rtx peep_operand[];\n\n");
diff --git a/gcc/genpreds.c b/gcc/genpreds.c
index 4c9dfc65664a5a15c1bff80d59ae675498769f55..fdba81825789b658f5bdcd6af6bc955e9daf0553 100644
--- a/gcc/genpreds.c
+++ b/gcc/genpreds.c
@@ -1577,6 +1577,7 @@ write_insn_preds_c (void)
 #include \"reload.h\"\n\
 #include \"regs.h\"\n\
 #include \"emit-rtl.h\"\n\
+#include \"memmodel.h\"\n\
 #include \"tm-constrs.h\"\n");
 
   FOR_ALL_PREDICATES (p)
diff --git a/gcc/genrecog.c b/gcc/genrecog.c
index 056798c82f7a7719e0a14ccec4156a3f6c21793f..778610744923bb1cd3e9ecfb5c93faa1c142063a 100644
--- a/gcc/genrecog.c
+++ b/gcc/genrecog.c
@@ -4192,6 +4192,7 @@ write_header (void)
 #include \"diagnostic-core.h\"\n\
 #include \"reload.h\"\n\
 #include \"regs.h\"\n\
+#include \"memmodel.h\"\n\
 #include \"tm-constrs.h\"\n\
 \n");
 
diff --git a/gcc/memmodel.h b/gcc/memmodel.h
new file mode 100644
index 0000000000000000000000000000000000000000..d53eb7bc9d9966c2b1510e584f0fd50b13cde572
--- /dev/null
+++ b/gcc/memmodel.h
@@ -0,0 +1,86 @@
+/* Prototypes of memory model helper functions.
+   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_MEMMODEL_H
+#define GCC_MEMMODEL_H
+
+/* Return the memory model from a host integer.  */
+static inline enum memmodel
+memmodel_from_int (unsigned HOST_WIDE_INT val)
+{
+  return (enum memmodel) (val & MEMMODEL_MASK);
+}
+
+/* Return the base memory model from a host integer.  */
+static inline enum memmodel
+memmodel_base (unsigned HOST_WIDE_INT val)
+{
+  return (enum memmodel) (val & MEMMODEL_BASE_MASK);
+}
+
+/* Return TRUE if the memory model is RELAXED.  */
+static inline bool
+is_mm_relaxed (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELAXED;
+}
+
+/* Return TRUE if the memory model is CONSUME.  */
+static inline bool
+is_mm_consume (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_CONSUME;
+}
+
+/* Return TRUE if the memory model is ACQUIRE.  */
+static inline bool
+is_mm_acquire (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQUIRE;
+}
+
+/* Return TRUE if the memory model is RELEASE.  */
+static inline bool
+is_mm_release (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELEASE;
+}
+
+/* Return TRUE if the memory model is ACQ_REL.  */
+static inline bool
+is_mm_acq_rel (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQ_REL;
+}
+
+/* Return TRUE if the memory model is SEQ_CST.  */
+static inline bool
+is_mm_seq_cst (enum memmodel model)
+{
+  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_SEQ_CST;
+}
+
+/* Return TRUE if the memory model is a SYNC variant.  */
+static inline bool
+is_mm_sync (enum memmodel model)
+{
+  return (model & MEMMODEL_SYNC);
+}
+
+#endif  /* GCC_MEMMODEL_H  */
diff --git a/gcc/optabs.c b/gcc/optabs.c
index 87b4f978420dfd2df3d915985509912d85c94569..36afdc2c4b2bae683ed8fd76d91fbd4dca69a06a 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -25,6 +25,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "target.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "predict.h"
 #include "tm_p.h"
 #include "expmed.h"
diff --git a/gcc/tree.h b/gcc/tree.h
index 38ee81675757902f147ac3d4e068bbdb56f925c9..dfbcb36ee772b72fc6c45e12845f38f0fb35a2ac 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -4670,69 +4670,6 @@ extern void warn_deprecated_use (tree, tree);
 extern void cache_integer_cst (tree);
 extern const char *combined_fn_name (combined_fn);
 
-/* Return the memory model from a host integer.  */
-static inline enum memmodel
-memmodel_from_int (unsigned HOST_WIDE_INT val)
-{
-  return (enum memmodel) (val & MEMMODEL_MASK);
-}
-
-/* Return the base memory model from a host integer.  */
-static inline enum memmodel
-memmodel_base (unsigned HOST_WIDE_INT val)
-{
-  return (enum memmodel) (val & MEMMODEL_BASE_MASK);
-}
-
-/* Return TRUE if the memory model is RELAXED.  */
-static inline bool
-is_mm_relaxed (enum memmodel model)
-{
-  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELAXED;
-}
-
-/* Return TRUE if the memory model is CONSUME.  */
-static inline bool
-is_mm_consume (enum memmodel model)
-{
-  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_CONSUME;
-}
-
-/* Return TRUE if the memory model is ACQUIRE.  */
-static inline bool
-is_mm_acquire (enum memmodel model)
-{
-  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQUIRE;
-}
-
-/* Return TRUE if the memory model is RELEASE.  */
-static inline bool
-is_mm_release (enum memmodel model)
-{
-  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_RELEASE;
-}
-
-/* Return TRUE if the memory model is ACQ_REL.  */
-static inline bool
-is_mm_acq_rel (enum memmodel model)
-{
-  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_ACQ_REL;
-}
-
-/* Return TRUE if the memory model is SEQ_CST.  */
-static inline bool
-is_mm_seq_cst (enum memmodel model)
-{
-  return (model & MEMMODEL_BASE_MASK) == MEMMODEL_SEQ_CST;
-}
-
-/* Return TRUE if the memory model is a SYNC variant.  */
-static inline bool
-is_mm_sync (enum memmodel model)
-{
-  return (model & MEMMODEL_SYNC);
-}
-
 /* Compare and hash for any structure which begins with a canonical
    pointer.  Assumes all pointers are interchangeable, which is sort
    of already assumed by gcc elsewhere IIRC.  */
diff --git a/gcc/tsan.c b/gcc/tsan.c
index aa95f4ee69e0eaf0e5a8e9651733c663b0d7ae76..deafce86f3f3a69bc125e2162443744824cafc02 100644
--- a/gcc/tsan.c
+++ b/gcc/tsan.c
@@ -25,6 +25,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "backend.h"
 #include "rtl.h"
 #include "tree.h"
+#include "memmodel.h"
 #include "gimple.h"
 #include "tree-pass.h"
 #include "ssa.h"
