This patch continues the removal of real-related macros by
replacing REAL_VALUES_LESS with real_less.

Bootstrapped & regression-tested on x86_64-linux-gnu.  Also tested by
building one target per CPU directory and checking that there were
no new warnings and no changes in testsuite output at -O2.  OK to install?

Thanks,
Richard


gcc/ada/
        * gcc-interface/trans.c (convert_with_check): Use real_less instead
        of REAL_VALUES_LESS.

gcc/
        * doc/tm.texi.in (REAL_VALUES_LESS): Delete.
        * doc/tm.texi: Regenerate.
        * real.h (real_less): Declare.
        (REAL_VALUES_LESS): Delete.
        * real.c (real_less): New function.
        (real_compare): Use it.
        * config/m68k/m68k.c (floating_exact_log2): Use real_less instead
        of REAL_VALUES_LESS.
        * config/microblaze/microblaze.c (microblaze_const_double_ok):
        Likewise.
        * fold-const.c (fold_convert_const_int_from_real): Likewise.
        * simplify-rtx.c (simplify_const_unary_operation): Likewise.
        (simplify_const_relational_operation): Likewise.
        * tree-call-cdce.c (check_pow): Likewise.
        (gen_conditions_for_pow_cst_base): Likewise.

diff --git a/gcc/ada/gcc-interface/trans.c b/gcc/ada/gcc-interface/trans.c
index 3252ea2..9838da0 100644
--- a/gcc/ada/gcc-interface/trans.c
+++ b/gcc/ada/gcc-interface/trans.c
@@ -8999,8 +8999,8 @@ convert_with_check (Entity_Id gnat_type, tree gnu_expr, 
bool overflowp,
       if (INTEGRAL_TYPE_P (gnu_in_basetype)
          ? tree_int_cst_lt (gnu_in_lb, gnu_out_lb)
          : (FLOAT_TYPE_P (gnu_base_type)
-            ? REAL_VALUES_LESS (TREE_REAL_CST (gnu_in_lb),
-                                TREE_REAL_CST (gnu_out_lb))
+            ? real_less (&TREE_REAL_CST (gnu_in_lb),
+                         &TREE_REAL_CST (gnu_out_lb))
             : 1))
        gnu_cond
          = invert_truthvalue
@@ -9011,8 +9011,8 @@ convert_with_check (Entity_Id gnat_type, tree gnu_expr, 
bool overflowp,
       if (INTEGRAL_TYPE_P (gnu_in_basetype)
          ? tree_int_cst_lt (gnu_out_ub, gnu_in_ub)
          : (FLOAT_TYPE_P (gnu_base_type)
-            ? REAL_VALUES_LESS (TREE_REAL_CST (gnu_out_ub),
-                                TREE_REAL_CST (gnu_in_lb))
+            ? real_less (&TREE_REAL_CST (gnu_out_ub),
+                         &TREE_REAL_CST (gnu_in_lb))
             : 1))
        gnu_cond
          = build_binary_op (TRUTH_ORIF_EXPR, boolean_type_node, gnu_cond,
diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
index 487cbf4..74de983 100644
--- a/gcc/config/m68k/m68k.c
+++ b/gcc/config/m68k/m68k.c
@@ -4365,7 +4365,7 @@ floating_exact_log2 (rtx x)
 
   REAL_VALUE_FROM_CONST_DOUBLE (r, x);
 
-  if (REAL_VALUES_LESS (r, dconst1))
+  if (real_less (&r, &dconst1))
     return 0;
 
   exp = real_exponent (&r);
diff --git a/gcc/config/microblaze/microblaze.c 
b/gcc/config/microblaze/microblaze.c
index ebcf65a..9efa739 100644
--- a/gcc/config/microblaze/microblaze.c
+++ b/gcc/config/microblaze/microblaze.c
@@ -280,12 +280,12 @@ microblaze_const_double_ok (rtx op, machine_mode mode)
 
   if (mode == DFmode)
     {
-      if (REAL_VALUES_LESS (d, dfhigh) && REAL_VALUES_LESS (dflow, d))
+      if (real_less (&d, &dfhigh) && real_less (&dflow, &d))
        return 1;
     }
   else
     {
-      if (REAL_VALUES_LESS (d, sfhigh) && REAL_VALUES_LESS (sflow, d))
+      if (real_less (&d, &sfhigh) && real_less (&sflow, &d))
        return 1;
     }
 
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index fdd49d9..f6a0b5d 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -9708,10 +9708,6 @@ array of @code{HOST_WIDE_INT}, but all code should treat 
it as an opaque
 quantity.
 @end defmac
 
-@deftypefn Macro int REAL_VALUES_LESS (REAL_VALUE_TYPE @var{x}, 
REAL_VALUE_TYPE @var{y})
-Tests whether @var{x} is less than @var{y}.
-@end deftypefn
-
 @deftypefn Macro HOST_WIDE_INT REAL_VALUE_FIX (REAL_VALUE_TYPE @var{x})
 Truncates @var{x} to a signed integer, rounding toward zero.
 @end deftypefn
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index ab75ad9..7fae1ca 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -7131,10 +7131,6 @@ array of @code{HOST_WIDE_INT}, but all code should treat 
it as an opaque
 quantity.
 @end defmac
 
-@deftypefn Macro int REAL_VALUES_LESS (REAL_VALUE_TYPE @var{x}, 
REAL_VALUE_TYPE @var{y})
-Tests whether @var{x} is less than @var{y}.
-@end deftypefn
-
 @deftypefn Macro HOST_WIDE_INT REAL_VALUE_FIX (REAL_VALUE_TYPE @var{x})
 Truncates @var{x} to a signed integer, rounding toward zero.
 @end deftypefn
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 1c72af6..2851a29 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -1877,7 +1877,7 @@ fold_convert_const_int_from_real (enum tree_code code, 
tree type, const_tree arg
     {
       tree lt = TYPE_MIN_VALUE (type);
       REAL_VALUE_TYPE l = real_value_from_int_cst (NULL_TREE, lt);
-      if (REAL_VALUES_LESS (r, l))
+      if (real_less (&r, &l))
        {
          overflow = true;
          val = lt;
@@ -1890,7 +1890,7 @@ fold_convert_const_int_from_real (enum tree_code code, 
tree type, const_tree arg
       if (ut)
        {
          REAL_VALUE_TYPE u = real_value_from_int_cst (NULL_TREE, ut);
-         if (REAL_VALUES_LESS (u, r))
+         if (real_less (&u, &r))
            {
              overflow = true;
              val = ut;
diff --git a/gcc/real.c b/gcc/real.c
index d47f32a..49d6739 100644
--- a/gcc/real.c
+++ b/gcc/real.c
@@ -1086,6 +1086,14 @@ real_equal (const REAL_VALUE_TYPE *op0, const 
REAL_VALUE_TYPE *op1)
   return do_compare (op0, op1, -1) == 0;
 }
 
+/* Return whether OP0 < OP1.  */
+
+bool
+real_less (const REAL_VALUE_TYPE *op0, const REAL_VALUE_TYPE *op1)
+{
+  return do_compare (op0, op1, 1) < 0;
+}
+
 bool
 real_compare (int icode, const REAL_VALUE_TYPE *op0,
              const REAL_VALUE_TYPE *op1)
@@ -1095,7 +1103,7 @@ real_compare (int icode, const REAL_VALUE_TYPE *op0,
   switch (code)
     {
     case LT_EXPR:
-      return do_compare (op0, op1, 1) < 0;
+      return real_less (op0, op1);
     case LE_EXPR:
       return do_compare (op0, op1, 1) <= 0;
     case GT_EXPR:
diff --git a/gcc/real.h b/gcc/real.h
index 1be4104..dc55ab2 100644
--- a/gcc/real.h
+++ b/gcc/real.h
@@ -250,6 +250,7 @@ extern bool real_isnegzero (const REAL_VALUE_TYPE *);
 /* Test relationships between reals.  */
 extern bool real_identical (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
 extern bool real_equal (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
+extern bool real_less (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
 
 /* Extend or truncate to a new mode.  */
 extern void real_convert (REAL_VALUE_TYPE *, machine_mode,
@@ -333,8 +334,6 @@ extern const struct real_format arm_half_format;
 #define REAL_ARITHMETIC(value, code, d1, d2) \
   real_arithmetic (&(value), code, &(d1), &(d2))
 
-#define REAL_VALUES_LESS(x, y)         real_compare (LT_EXPR, &(x), &(y))
-
 /* Determine whether a floating-point value X is infinite.  */
 #define REAL_VALUE_ISINF(x)            real_isinf (&(x))
 
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c
index b4d95a2..9f791a7 100644
--- a/gcc/simplify-rtx.c
+++ b/gcc/simplify-rtx.c
@@ -1862,13 +1862,13 @@ simplify_const_unary_operation (enum rtx_code code, 
machine_mode mode,
          /* Test against the signed upper bound.  */
          wmax = wi::max_value (width, SIGNED);
          real_from_integer (&t, VOIDmode, wmax, SIGNED);
-         if (REAL_VALUES_LESS (t, x))
+         if (real_less (&t, &x))
            return immed_wide_int_const (wmax, mode);
 
          /* Test against the signed lower bound.  */
          wmin = wi::min_value (width, SIGNED);
          real_from_integer (&t, VOIDmode, wmin, SIGNED);
-         if (REAL_VALUES_LESS (x, t))
+         if (real_less (&x, &t))
            return immed_wide_int_const (wmin, mode);
 
          return immed_wide_int_const (real_to_integer (&x, &fail, width), 
mode);
@@ -1881,7 +1881,7 @@ simplify_const_unary_operation (enum rtx_code code, 
machine_mode mode,
          /* Test against the unsigned upper bound.  */
          wmax = wi::max_value (width, UNSIGNED);
          real_from_integer (&t, VOIDmode, wmax, UNSIGNED);
-         if (REAL_VALUES_LESS (t, x))
+         if (real_less (&t, &x))
            return immed_wide_int_const (wmax, mode);
 
          return immed_wide_int_const (real_to_integer (&x, &fail, width),
@@ -4943,7 +4943,7 @@ simplify_const_relational_operation (enum rtx_code code,
 
       return comparison_result (code,
                                (real_equal (&d0, &d1) ? CMP_EQ :
-                                REAL_VALUES_LESS (d0, d1) ? CMP_LT : CMP_GT));
+                                real_less (&d0, &d1) ? CMP_LT : CMP_GT));
     }
 
   /* Otherwise, see if the operands are both integers.  */
diff --git a/gcc/tree-call-cdce.c b/gcc/tree-call-cdce.c
index 7a0275a..112a325 100644
--- a/gcc/tree-call-cdce.c
+++ b/gcc/tree-call-cdce.c
@@ -201,10 +201,10 @@ check_pow (gcall *pow_call)
       REAL_VALUE_TYPE bcv = TREE_REAL_CST (base);
       if (real_equal (&bcv, &dconst1))
         return false;
-      if (REAL_VALUES_LESS (bcv, dconst1))
+      if (real_less (&bcv, &dconst1))
         return false;
       real_from_integer (&mv, TYPE_MODE (TREE_TYPE (base)), 256, UNSIGNED);
-      if (REAL_VALUES_LESS (mv, bcv))
+      if (real_less (&mv, &bcv))
         return false;
       return true;
     }
@@ -421,9 +421,9 @@ gen_conditions_for_pow_cst_base (tree base, tree expn,
   REAL_VALUE_TYPE mv;
   REAL_VALUE_TYPE bcv = TREE_REAL_CST (base);
   gcc_assert (!real_equal (&bcv, &dconst1)
-              && !REAL_VALUES_LESS (bcv, dconst1));
+              && !real_less (&bcv, &dconst1));
   real_from_integer (&mv, TYPE_MODE (TREE_TYPE (base)), 256, UNSIGNED);
-  gcc_assert (!REAL_VALUES_LESS (mv, bcv));
+  gcc_assert (!real_less (&mv, &bcv));
 
   exp_domain = get_domain (0, false, false,
                            127, true, false);

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