Hi!

I've backported following 9 patches from gcc-8-branch to
gcc-7-branch, bootstrapped/regtested and committed to gcc-7-branch.

        Jakub
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-07-16  Jakub Jelinek  <ja...@redhat.com>

        PR c++/3698
        PR c++/86208
        * cp-gimplify.c (cp_genericize_r): When using extern_decl_map, or
        in TREE_USED flag from stmt to h->to.

        * g++.dg/opt/pr3698.C: New test.

--- gcc/cp/cp-gimplify.c        (revision 262678)
+++ gcc/cp/cp-gimplify.c        (revision 262679)
@@ -1085,6 +1085,7 @@ cp_genericize_r (tree *stmt_p, int *walk
       if (h)
        {
          *stmt_p = h->to;
+         TREE_USED (h->to) |= TREE_USED (stmt);
          *walk_subtrees = 0;
          return NULL;
        }
--- gcc/testsuite/g++.dg/opt/pr3698.C   (nonexistent)
+++ gcc/testsuite/g++.dg/opt/pr3698.C   (revision 262679)
@@ -0,0 +1,21 @@
+// PR c++/3698
+// { dg-do link }
+// { dg-options "-O0" }
+
+struct X {
+  int i;
+};
+
+inline const int&
+OHashKey (const X& x)
+{
+  return x.i;
+}
+
+int
+main ()
+{
+ extern const int& OHashKey (const X& x);
+ X x;
+ return OHashKey (x);
+}
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-07-26  Jakub Jelinek  <ja...@redhat.com>

        PR middle-end/86660
        * omp-low.c (scan_sharing_clauses): Don't ignore map clauses for
        declare target to variables if they have always,{to,from,tofrom} map
        kinds.

        * testsuite/libgomp.c/pr86660.c: New test.

--- gcc/omp-low.c       (revision 263011)
+++ gcc/omp-low.c       (revision 263012)
@@ -1190,13 +1190,16 @@ scan_sharing_clauses (tree clauses, omp_
          /* Global variables with "omp declare target" attribute
             don't need to be copied, the receiver side will use them
             directly.  However, global variables with "omp declare target link"
-            attribute need to be copied.  */
+            attribute need to be copied.  Or when ALWAYS modifier is used.  */
          if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP
              && DECL_P (decl)
              && ((OMP_CLAUSE_MAP_KIND (c) != GOMP_MAP_FIRSTPRIVATE_POINTER
                   && (OMP_CLAUSE_MAP_KIND (c)
                       != GOMP_MAP_FIRSTPRIVATE_REFERENCE))
                  || TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE)
+             && OMP_CLAUSE_MAP_KIND (c) != GOMP_MAP_ALWAYS_TO
+             && OMP_CLAUSE_MAP_KIND (c) != GOMP_MAP_ALWAYS_FROM
+             && OMP_CLAUSE_MAP_KIND (c) != GOMP_MAP_ALWAYS_TOFROM
              && is_global_var (maybe_lookup_decl_in_outer_ctx (decl, ctx))
              && varpool_node::get_create (decl)->offloadable
              && !lookup_attribute ("omp declare target link",
--- libgomp/testsuite/libgomp.c/pr86660.c       (nonexistent)
+++ libgomp/testsuite/libgomp.c/pr86660.c       (revision 263012)
@@ -0,0 +1,28 @@
+/* PR middle-end/86660 */
+
+#pragma omp declare target
+int v[20];
+
+void
+foo (void)
+{
+  if (v[7] != 2)
+    __builtin_abort ();
+  v[7] = 1;
+}
+#pragma omp end declare target
+
+int
+main ()
+{
+  v[5] = 8;
+  v[7] = 2;
+  #pragma omp target map (always, tofrom: v)
+  {
+    foo ();
+    v[5] = 3;
+  }
+  if (v[7] != 1 || v[5] != 3)
+    __builtin_abort ();
+  return 0;
+}
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-07-10  Jakub Jelinek  <ja...@redhat.com>

        PR fortran/86421
        * module.c (omp_declare_simd_clauses): Add LINEAR with _REF, _VAL and
        _UVAL suffixes.
        (mio_omp_declare_simd): Save and restore ref, val and uval modifiers
        on linear clauses.  Initialize n->where to gfc_current_locus.

        * gfortran.dg/vect/pr86421.f90: New test.

--- gcc/fortran/module.c        (revision 263012)
+++ gcc/fortran/module.c        (revision 263013)
@@ -4100,6 +4100,9 @@ static const mstring omp_declare_simd_cl
     minit ("UNIFORM", 3),
     minit ("LINEAR", 4),
     minit ("ALIGNED", 5),
+    minit ("LINEAR_REF", 33),
+    minit ("LINEAR_VAL", 34),
+    minit ("LINEAR_UVAL", 35),
     minit (NULL, -1)
 };
 
@@ -4142,7 +4145,10 @@ mio_omp_declare_simd (gfc_namespace *ns,
            }
          for (n = ods->clauses->lists[OMP_LIST_LINEAR]; n; n = n->next)
            {
-             mio_name (4, omp_declare_simd_clauses);
+             if (n->u.linear_op == OMP_LINEAR_DEFAULT)
+               mio_name (4, omp_declare_simd_clauses);
+             else
+               mio_name (32 + n->u.linear_op, omp_declare_simd_clauses);
              mio_symbol_ref (&n->sym);
              mio_expr (&n->expr);
            }
@@ -4183,11 +4189,20 @@ mio_omp_declare_simd (gfc_namespace *ns,
            case 4:
            case 5:
              *ptrs[t - 3] = n = gfc_get_omp_namelist ();
+           finish_namelist:
+             n->where = gfc_current_locus;
              ptrs[t - 3] = &n->next;
              mio_symbol_ref (&n->sym);
              if (t != 3)
                mio_expr (&n->expr);
              break;
+           case 33:
+           case 34:
+           case 35:
+             *ptrs[1] = n = gfc_get_omp_namelist ();
+             n->u.linear_op = (enum gfc_omp_linear_op) (t - 32);
+             t = 4;
+             goto finish_namelist;
            }
        }
     }
--- gcc/testsuite/gfortran.dg/vect/pr86421.f90  (nonexistent)
+++ gcc/testsuite/gfortran.dg/vect/pr86421.f90  (revision 263013)
@@ -0,0 +1,35 @@
+! PR fortran/86421
+! { dg-require-effective-target vect_simd_clones }
+! { dg-additional-options "-fopenmp-simd" }
+! { dg-additional-options "-mavx" { target avx_runtime } }
+
+module mod86421
+  implicit none
+contains
+  subroutine foo(x, y, z)
+    real :: x
+    integer :: y, z
+    !$omp declare simd linear(ref(x)) linear(val(y)) linear(uval(z))
+    x = x + y
+    z = z + 1
+  end subroutine
+end module mod86421
+
+program pr86421
+  use mod86421
+  implicit none
+  integer :: i, j
+  real :: a(64)
+  j = 0
+  do i = 1, 64
+    a(i) = i
+  end do
+  !$omp simd
+  do i = 1, 64
+    call foo (a(i), i, j)
+  end do
+  do i = 1, 64
+    if (a(i) .ne. (2 * i)) stop 1
+  end do
+  if (j .ne. 64) stop 2
+end program pr86421
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-07-17  Jakub Jelinek  <ja...@redhat.com>

        PR middle-end/86539
        * gimplify.c (gimplify_omp_for): Ensure taskloop firstprivatized init
        and cond temporaries don't have reference type if iterator has
        pointer type.  For init use &for_pre_body instead of pre_p if
        for_pre_body is non-empty.

        * testsuite/libgomp.c++/pr86539.C: New test.

--- gcc/gimplify.c      (revision 263013)
+++ gcc/gimplify.c      (revision 263014)
@@ -9734,9 +9734,26 @@ gimplify_omp_for (tree *expr_p, gimple_s
          t = TREE_VEC_ELT (OMP_FOR_INIT (for_stmt), i);
          if (!is_gimple_constant (TREE_OPERAND (t, 1)))
            {
+             tree type = TREE_TYPE (TREE_OPERAND (t, 0));
              TREE_OPERAND (t, 1)
                = get_initialized_tmp_var (TREE_OPERAND (t, 1),
-                                          pre_p, NULL, false);
+                                          gimple_seq_empty_p (for_pre_body)
+                                          ? pre_p : &for_pre_body, NULL,
+                                          false);
+             /* Reference to pointer conversion is considered useless,
+                but is significant for firstprivate clause.  Force it
+                here.  */
+             if (TREE_CODE (type) == POINTER_TYPE
+                 && (TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 1)))
+                     == REFERENCE_TYPE))
+               {
+                 tree v = create_tmp_var (TYPE_MAIN_VARIANT (type));
+                 tree m = build2 (INIT_EXPR, TREE_TYPE (v), v,
+                                  TREE_OPERAND (t, 1));
+                 gimplify_and_add (m, gimple_seq_empty_p (for_pre_body)
+                                      ? pre_p : &for_pre_body);
+                 TREE_OPERAND (t, 1) = v;
+               }
              tree c = build_omp_clause (input_location,
                                         OMP_CLAUSE_FIRSTPRIVATE);
              OMP_CLAUSE_DECL (c) = TREE_OPERAND (t, 1);
@@ -9748,11 +9765,26 @@ gimplify_omp_for (tree *expr_p, gimple_s
          t = TREE_VEC_ELT (OMP_FOR_COND (for_stmt), i);
          if (!is_gimple_constant (TREE_OPERAND (t, 1)))
            {
+             tree type = TREE_TYPE (TREE_OPERAND (t, 0));
              TREE_OPERAND (t, 1)
                = get_initialized_tmp_var (TREE_OPERAND (t, 1),
                                           gimple_seq_empty_p (for_pre_body)
                                           ? pre_p : &for_pre_body, NULL,
                                           false);
+             /* Reference to pointer conversion is considered useless,
+                but is significant for firstprivate clause.  Force it
+                here.  */
+             if (TREE_CODE (type) == POINTER_TYPE
+                 && (TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 1)))
+                     == REFERENCE_TYPE))
+               {
+                 tree v = create_tmp_var (TYPE_MAIN_VARIANT (type));
+                 tree m = build2 (INIT_EXPR, TREE_TYPE (v), v,
+                                  TREE_OPERAND (t, 1));
+                 gimplify_and_add (m, gimple_seq_empty_p (for_pre_body)
+                                      ? pre_p : &for_pre_body);
+                 TREE_OPERAND (t, 1) = v;
+               }
              tree c = build_omp_clause (input_location,
                                         OMP_CLAUSE_FIRSTPRIVATE);
              OMP_CLAUSE_DECL (c) = TREE_OPERAND (t, 1);
--- libgomp/testsuite/libgomp.c++/pr86539.C     (nonexistent)
+++ libgomp/testsuite/libgomp.c++/pr86539.C     (revision 263014)
@@ -0,0 +1,28 @@
+// PR middle-end/86539
+
+int a[384];
+
+__attribute__((noinline, noclone)) void
+foo (int &b, int &c)
+{
+  #pragma omp taskloop shared (a) collapse(3)
+  for (int i = 0; i < 1; i++)
+    for (int *p = &b; p < &c; p++)
+      for (int j = 0; j < 1; j++)
+       if (p < &a[128] || p >= &a[256])
+         __builtin_abort ();
+       else
+         p[0]++;
+}
+
+int
+main ()
+{
+  #pragma omp parallel
+  #pragma omp single
+    foo (a[128], a[256]);
+  for (int i = 0; i < 384; i++)
+    if (a[i] != (i >= 128 && i < 256))
+      __builtin_abort ();
+  return 0;
+}
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-07-17  Jakub Jelinek  <ja...@redhat.com>

        PR middle-end/86542
        * omp-low.c (create_task_copyfn): Copy over also fields corresponding
        to _looptemp_ clauses, other than the first two.

        * testsuite/libgomp.c++/pr86542.C: New test.

--- gcc/omp-low.c       (revision 263014)
+++ gcc/omp-low.c       (revision 263015)
@@ -7102,6 +7102,7 @@ create_task_copyfn (gomp_task *task_stmt
   splay_tree_node n;
   struct omp_taskcopy_context tcctx;
   location_t loc = gimple_location (task_stmt);
+  size_t looptempno = 0;
 
   child_fn = gimple_omp_task_copy_fn (task_stmt);
   child_cfun = DECL_STRUCT_FUNCTION (child_fn);
@@ -7215,6 +7216,15 @@ create_task_copyfn (gomp_task *task_stmt
        t = build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src);
        append_to_statement_list (t, &list);
        break;
+      case OMP_CLAUSE__LOOPTEMP_:
+       /* Fields for first two _looptemp_ clauses are initialized by
+          GOMP_taskloop*, the rest are handled like firstprivate.  */
+        if (looptempno < 2)
+         {
+           looptempno++;
+           break;
+         }
+       /* FALLTHRU */
       case OMP_CLAUSE_FIRSTPRIVATE:
        decl = OMP_CLAUSE_DECL (c);
        if (is_variable_sized (decl))
@@ -7240,7 +7250,10 @@ create_task_copyfn (gomp_task *task_stmt
          src = decl;
        dst = build_simple_mem_ref_loc (loc, arg);
        dst = omp_build_component_ref (dst, f);
-       t = lang_hooks.decls.omp_clause_copy_ctor (c, dst, src);
+       if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE__LOOPTEMP_)
+         t = build2 (MODIFY_EXPR, TREE_TYPE (dst), dst, src);
+       else
+         t = lang_hooks.decls.omp_clause_copy_ctor (c, dst, src);
        append_to_statement_list (t, &list);
        break;
       case OMP_CLAUSE_PRIVATE:
--- libgomp/testsuite/libgomp.c++/pr86542.C     (nonexistent)
+++ libgomp/testsuite/libgomp.c++/pr86542.C     (revision 263015)
@@ -0,0 +1,37 @@
+// PR middle-end/86542
+
+struct S { int s; S (); ~S (); S (const S &); };
+S s;
+
+S::S ()
+{
+}
+
+S::~S ()
+{
+}
+
+S::S (const S &x)
+{
+  s = x.s;
+}
+
+__attribute__((noinline, noclone)) void
+foo (int i, int j, int k, S s)
+{
+  if (i != 0 || j != 0 || k != 0 || s.s != 12)
+    __builtin_abort ();
+}
+
+int
+main ()
+{
+  volatile int inc = 16, jnc = 16, knc = 16;
+  s.s = 12;
+  #pragma omp taskloop collapse (3) firstprivate (s)
+  for (int i = 0; i < 16; i += inc)
+    for (int j = 0; j < 16; j += jnc)
+      for (int k = 0; k < 16; k += knc)
+       foo (i, j, k, s);
+  return 0;
+}
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-07-24  Jakub Jelinek  <ja...@redhat.com>

        PR middle-end/86627
        * expmed.c (expand_divmod): Punt if d == HOST_WIDE_INT_MIN
        and size > HOST_BITS_PER_WIDE_INT.  For size > HOST_BITS_PER_WIDE_INT
        and abs_d == d, do the power of two handling if profitable.

        * gcc.target/i386/pr86627.c: New test.

--- gcc/expmed.c        (revision 263016)
+++ gcc/expmed.c        (revision 263017)
@@ -4314,6 +4314,11 @@ expand_divmod (int rem_flag, enum tree_c
                HOST_WIDE_INT d = INTVAL (op1);
                unsigned HOST_WIDE_INT abs_d;
 
+               /* Not prepared to handle division/remainder by
+                  0xffffffffffffffff8000000000000000 etc.  */
+               if (d == HOST_WIDE_INT_MIN && size > HOST_BITS_PER_WIDE_INT)
+                 break;
+
                /* Since d might be INT_MIN, we have to cast to
                   unsigned HOST_WIDE_INT before negating to avoid
                   undefined signed overflow.  */
@@ -4357,9 +4362,7 @@ expand_divmod (int rem_flag, enum tree_c
                                                compute_mode)
                                 != CODE_FOR_nothing)))
                  ;
-               else if (EXACT_POWER_OF_2_OR_ZERO_P (abs_d)
-                        && (size <= HOST_BITS_PER_WIDE_INT
-                            || abs_d != (unsigned HOST_WIDE_INT) d))
+               else if (EXACT_POWER_OF_2_OR_ZERO_P (abs_d))
                  {
                    if (rem_flag)
                      {
--- gcc/testsuite/gcc.target/i386/pr86627.c     (nonexistent)
+++ gcc/testsuite/gcc.target/i386/pr86627.c     (revision 263017)
@@ -0,0 +1,28 @@
+/* PR middle-end/86627 */
+/* { dg-do compile { target int128 } } */
+/* { dg-options "-O2" } */
+/* { dg-final { scan-assembler-not "call\[^\n\r]*__divti3" } } */
+
+__int128_t
+f1 (__int128_t a)
+{
+  return a / 2;
+}
+
+__int128_t
+f2 (__int128_t a)
+{
+  return a / -2;
+}
+
+__int128_t
+f3 (__int128_t a)
+{
+  return a / 0x4000000000000000LL;
+}
+
+__int128_t
+f4 (__int128_t a)
+{
+  return a / -0x4000000000000000LL;
+}
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-08-27  Jakub Jelinek  <ja...@redhat.com>

        PR rtl-optimization/87065
        * combine.c (simplify_if_then_else): Formatting fix.
        (if_then_else_cond): Guard MULT optimization with SCALAR_INT_MODE_P
        check.
        (known_cond): Don't return const_true_rtx for vector modes.  Use
        CONST0_RTX instead of const0_rtx.  Formatting fixes.

        * gcc.target/i386/pr87065.c: New test.

--- gcc/combine.c       (revision 263872)
+++ gcc/combine.c       (revision 263873)
@@ -6455,7 +6455,7 @@ simplify_if_then_else (rtx x)
                          pc_rtx, pc_rtx, 0, 0, 0);
       if (reg_mentioned_p (from, false_rtx))
        false_rtx = subst (known_cond (copy_rtx (false_rtx), false_code,
-                                  from, false_val),
+                                      from, false_val),
                           pc_rtx, pc_rtx, 0, 0, 0);
 
       SUBST (XEXP (x, 1), swapped ? false_rtx : true_rtx);
@@ -9294,6 +9294,7 @@ if_then_else_cond (rtx x, rtx *ptrue, rt
 
          if (COMPARISON_P (cond0)
              && COMPARISON_P (cond1)
+             && SCALAR_INT_MODE_P (mode)
              && ((GET_CODE (cond0) == reversed_comparison_code (cond1, NULL)
                   && rtx_equal_p (XEXP (cond0, 0), XEXP (cond1, 0))
                   && rtx_equal_p (XEXP (cond0, 1), XEXP (cond1, 1)))
@@ -9474,12 +9475,12 @@ known_cond (rtx x, enum rtx_code cond, r
          if (COMPARISON_P (x))
            {
              if (comparison_dominates_p (cond, code))
-               return const_true_rtx;
+               return VECTOR_MODE_P (GET_MODE (x)) ? x : const_true_rtx;
 
              code = reversed_comparison_code (x, NULL);
              if (code != UNKNOWN
                  && comparison_dominates_p (cond, code))
-               return const0_rtx;
+               return CONST0_RTX (GET_MODE (x));
              else
                return x;
            }
@@ -9522,7 +9523,7 @@ known_cond (rtx x, enum rtx_code cond, r
          /* We must simplify subreg here, before we lose track of the
             original inner_mode.  */
          new_rtx = simplify_subreg (GET_MODE (x), r,
-                                inner_mode, SUBREG_BYTE (x));
+                                    inner_mode, SUBREG_BYTE (x));
          if (new_rtx)
            return new_rtx;
          else
@@ -9547,7 +9548,7 @@ known_cond (rtx x, enum rtx_code cond, r
          /* We must simplify the zero_extend here, before we lose
             track of the original inner_mode.  */
          new_rtx = simplify_unary_operation (ZERO_EXTEND, GET_MODE (x),
-                                         r, inner_mode);
+                                             r, inner_mode);
          if (new_rtx)
            return new_rtx;
          else
--- gcc/testsuite/gcc.target/i386/pr87065.c     (nonexistent)
+++ gcc/testsuite/gcc.target/i386/pr87065.c     (revision 263873)
@@ -0,0 +1,22 @@
+/* PR rtl-optimization/87065 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -mxop -mprefer-avx128" } */
+
+int a, c, d, e;
+short *b;
+
+void
+foo (void)
+{
+  short *g = b;
+  int h = 1;
+  unsigned i;
+  for (; h <= 1; h++)
+    g = (short *) &c;
+  for (; c; c++)
+    {
+      for (; i <= 1; i++)
+       ;
+      a ^= (a > 0 <= i) + ((e += d) == 0 ?: (*g = 8));
+    }
+}
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-09-12  Jakub Jelinek  <ja...@redhat.com>

        PR middle-end/87248
        * fold-const.c (fold_ternary_loc) <case COND_EXPR>: Verify also that
        BIT_AND_EXPR's second operand is a power of two.  Formatting fix.

        * c-c++-common/torture/pr87248.c: New test.

--- gcc/fold-const.c    (revision 264230)
+++ gcc/fold-const.c    (revision 264231)
@@ -11565,10 +11565,16 @@ fold_ternary_loc (location_t loc, enum t
          && integer_pow2p (arg1)
          && TREE_CODE (TREE_OPERAND (arg0, 0)) == BIT_AND_EXPR
          && operand_equal_p (TREE_OPERAND (TREE_OPERAND (arg0, 0), 1),
-                             arg1, OEP_ONLY_CONST))
+                             arg1, OEP_ONLY_CONST)
+         /* operand_equal_p compares just value, not precision, so e.g.
+            arg1 could be 8-bit -128 and be power of two, but BIT_AND_EXPR
+            second operand 32-bit -128, which is not a power of two (or vice
+            versa.  */
+         && integer_pow2p (TREE_OPERAND (TREE_OPERAND (arg0, 0), 1)))
        return pedantic_non_lvalue_loc (loc,
-                                   fold_convert_loc (loc, type,
-                                                     TREE_OPERAND (arg0, 0)));
+                                       fold_convert_loc (loc, type,
+                                                         TREE_OPERAND (arg0,
+                                                                       0)));
 
       /* Disable the transformations below for vectors, since
         fold_binary_op_with_conditional_arg may undo them immediately,
--- gcc/testsuite/c-c++-common/torture/pr87248.c        (nonexistent)
+++ gcc/testsuite/c-c++-common/torture/pr87248.c        (revision 264231)
@@ -0,0 +1,36 @@
+/* PR middle-end/87248 */
+/* { dg-do run } */
+
+void
+foo (signed char *p, int q)
+{
+  *p = q & (-__SCHAR_MAX__ - 1) ? (-__SCHAR_MAX__ - 1) : 0;
+}
+
+int
+bar (long long x)
+{
+  return x & (-__INT_MAX__ - 1) ? (-__INT_MAX__ - 1) : 0;
+}
+
+int
+main ()
+{
+#if __INT_MAX__ > 4 * __SCHAR_MAX__
+  signed char a[4];
+  foo (a, __SCHAR_MAX__ + 1U);
+  foo (a + 1, 2 * (__SCHAR_MAX__ + 1U));
+  foo (a + 2, -__INT_MAX__ - 1);
+  foo (a + 3, (__SCHAR_MAX__ + 1U) / 2);
+  if (a[0] != (-__SCHAR_MAX__ - 1) || a[1] != a[0] || a[2] != a[0] || a[3] != 
0)
+    __builtin_abort ();
+#endif
+#if __LONG_LONG_MAX__ > 4 * __INT_MAX__
+  if (bar (__INT_MAX__ + 1LL) != (-__INT_MAX__ - 1)
+      || bar (2 * (__INT_MAX__ + 1LL)) != (-__INT_MAX__ - 1)
+      || bar (-__LONG_LONG_MAX__ - 1) != (-__INT_MAX__ - 1)
+      || bar ((__INT_MAX__ + 1LL) / 2) != 0)
+    __builtin_abort ();
+#endif
+  return 0;
+}
2018-10-12  Jakub Jelinek  <ja...@redhat.com>

        Backported from mainline
        2018-10-10  Jakub Jelinek  <ja...@redhat.com>

        PR target/87550
        * config/i386/i386-builtin.def (IX86_BUILTIN_RDPMC): Move from args set
        to special_args set.

        * gcc.target/i386/pr87550.c: New test.

--- gcc/config/i386/i386-builtin.def    (revision 265048)
+++ gcc/config/i386/i386-builtin.def    (revision 265049)
@@ -90,6 +90,7 @@ BDESC_END (PCMPISTR, SPECIAL_ARGS)
 BDESC_FIRST (special_args, SPECIAL_ARGS,
        0, CODE_FOR_nothing, "__builtin_ia32_rdtsc", IX86_BUILTIN_RDTSC, 
UNKNOWN, (int) UINT64_FTYPE_VOID)
 BDESC (0, CODE_FOR_nothing, "__builtin_ia32_rdtscp", IX86_BUILTIN_RDTSCP, 
UNKNOWN, (int) UINT64_FTYPE_PUNSIGNED)
+BDESC (0, CODE_FOR_nothing, "__builtin_ia32_rdpmc", IX86_BUILTIN_RDPMC, 
UNKNOWN, (int) UINT64_FTYPE_INT)
 BDESC (0, CODE_FOR_pause, "__builtin_ia32_pause", IX86_BUILTIN_PAUSE, UNKNOWN, 
(int) VOID_FTYPE_VOID)
 
 /* 80387 (for use internally for atomic compound assignment).  */
@@ -427,7 +428,6 @@ BDESC_END (SPECIAL_ARGS, ARGS)
 BDESC_FIRST (args, ARGS,
        0, CODE_FOR_bsr, "__builtin_ia32_bsrsi", IX86_BUILTIN_BSRSI, UNKNOWN, 
(int) INT_FTYPE_INT)
 BDESC (OPTION_MASK_ISA_64BIT, CODE_FOR_bsr_rex64, "__builtin_ia32_bsrdi", 
IX86_BUILTIN_BSRDI, UNKNOWN, (int) INT64_FTYPE_INT64)
-BDESC (0, CODE_FOR_nothing, "__builtin_ia32_rdpmc", IX86_BUILTIN_RDPMC, 
UNKNOWN, (int) UINT64_FTYPE_INT)
 BDESC (0, CODE_FOR_rotlqi3, "__builtin_ia32_rolqi", IX86_BUILTIN_ROLQI, 
UNKNOWN, (int) UINT8_FTYPE_UINT8_INT)
 BDESC (0, CODE_FOR_rotlhi3, "__builtin_ia32_rolhi", IX86_BUILTIN_ROLHI, 
UNKNOWN, (int) UINT16_FTYPE_UINT16_INT)
 BDESC (0, CODE_FOR_rotrqi3, "__builtin_ia32_rorqi", IX86_BUILTIN_RORQI, 
UNKNOWN, (int) UINT8_FTYPE_UINT8_INT)
--- gcc/testsuite/gcc.target/i386/pr87550.c     (nonexistent)
+++ gcc/testsuite/gcc.target/i386/pr87550.c     (revision 265049)
@@ -0,0 +1,21 @@
+/* PR target/87550 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+#include <x86intrin.h>
+
+int
+foo (int x)
+{
+  return __rdtsc () + __rdtsc ();
+}
+
+/* { dg-final { scan-assembler-times "\trdtsc\[\n\r]" 2 } } */
+
+int
+bar (int x)
+{
+  return __rdpmc (0) + __rdpmc (0);
+}
+
+/* { dg-final { scan-assembler-times "\trdpmc\[\n\r]" 2 } } */

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