Update 4.8.1 to 4.8.3.

My previous drop was the wrong version. The platform mingw is
currently using 4.8.3, not 4.8.1 (not sure how I got that wrong).

From ftp://ftp.gnu.org/gnu/gcc/gcc-4.8.3/gcc-4.8.3.tar.bz2.

Bug: http://b/26523949
Change-Id: Id85f1bdcbbaf78c7d0b5a69e74c798a08f341c35

1 files changed, 457 insertions, 0 deletions

diff --git a/gcc-4.8.3/gcc/double-int.h b/gcc-4.8.3/gcc/double-int.h
new file mode 100644
index 000000000..5c425a84a
--- /dev/null
+++ b/gcc-4.8.3/gcc/double-int.h
@@ -0,0 +1,457 @@
+/* Operations with long integers.
+   Copyright (C) 2006-2013 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 DOUBLE_INT_H
+#define DOUBLE_INT_H
+
+/* A large integer is currently represented as a pair of HOST_WIDE_INTs.
+   It therefore represents a number with precision of
+   2 * HOST_BITS_PER_WIDE_INT bits (it is however possible that the
+   internal representation will change, if numbers with greater precision
+   are needed, so the users should not rely on it).  The representation does
+   not contain any information about signedness of the represented value, so
+   it can be used to represent both signed and unsigned numbers.  For
+   operations where the results depend on signedness (division, comparisons),
+   it must be specified separately.  For each such operation, there are three
+   versions of the function -- double_int_op, that takes an extra UNS argument
+   giving the signedness of the values, and double_int_sop and double_int_uop
+   that stand for its specializations for signed and unsigned values.
+
+   You may also represent with numbers in smaller precision using double_int.
+   You however need to use double_int_ext (that fills in the bits of the
+   number over the prescribed precision with zeros or with the sign bit) before
+   operations that do not perform arithmetics modulo 2^precision (comparisons,
+   division), and possibly before storing the results, if you want to keep
+   them in some canonical form).  In general, the signedness of double_int_ext
+   should match the signedness of the operation.
+
+   ??? The components of double_int differ in signedness mostly for
+   historical reasons (they replace an older structure used to represent
+   numbers with precision higher than HOST_WIDE_INT).  It might be less
+   confusing to have them both signed or both unsigned.  */
+
+struct double_int
+{
+  /* Normally, we would define constructors to create instances.
+     Two things prevent us from doing so.
+     First, defining a constructor makes the class non-POD in C++03,
+     and we certainly want double_int to be a POD.
+     Second, the GCC conding conventions prefer explicit conversion,
+     and explicit conversion operators are not available until C++11.  */
+
+  static double_int from_uhwi (unsigned HOST_WIDE_INT cst);
+  static double_int from_shwi (HOST_WIDE_INT cst);
+  static double_int from_pair (HOST_WIDE_INT high, unsigned HOST_WIDE_INT low);
+
+  /* Construct from a fuffer of length LEN.  BUFFER will be read according
+     to byte endianess and word endianess.  */
+  static double_int from_buffer (const unsigned char *buffer, int len);
+
+  /* No copy assignment operator or destructor to keep the type a POD.  */
+
+  /* There are some special value-creation static member functions.  */
+
+  static double_int mask (unsigned prec);
+  static double_int max_value (unsigned int prec, bool uns);
+  static double_int min_value (unsigned int prec, bool uns);
+
+  /* The following functions are mutating operations.  */
+
+  double_int &operator ++ (); // prefix
+  double_int &operator -- (); // prefix
+  double_int &operator *= (double_int);
+  double_int &operator += (double_int);
+  double_int &operator -= (double_int);
+  double_int &operator &= (double_int);
+  double_int &operator ^= (double_int);
+  double_int &operator |= (double_int);
+
+  /* The following functions are non-mutating operations.  */
+
+  /* Conversion functions.  */
+
+  HOST_WIDE_INT to_shwi () const;
+  unsigned HOST_WIDE_INT to_uhwi () const;
+
+  /* Conversion query functions.  */
+
+  bool fits_uhwi () const;
+  bool fits_shwi () const;
+  bool fits_hwi (bool uns) const;
+
+  /* Attribute query functions.  */
+
+  int trailing_zeros () const;
+  int popcount () const;
+
+  /* Arithmetic query operations.  */
+
+  bool multiple_of (double_int, bool, double_int *) const;
+
+  /* Arithmetic operation functions.  */
+
+  /* The following operations perform arithmetics modulo 2^precision, so you
+     do not need to call .ext between them, even if you are representing
+     numbers with precision less than HOST_BITS_PER_DOUBLE_INT bits.  */
+
+  double_int set_bit (unsigned) const;
+  double_int mul_with_sign (double_int, bool unsigned_p, bool *overflow) const;
+  double_int wide_mul_with_sign (double_int, bool unsigned_p,
+				 double_int *higher, bool *overflow) const;
+  double_int add_with_sign (double_int, bool unsigned_p, bool *overflow) const;
+  double_int sub_with_overflow (double_int, bool *overflow) const;
+  double_int neg_with_overflow (bool *overflow) const;
+
+  double_int operator * (double_int) const;
+  double_int operator + (double_int) const;
+  double_int operator - (double_int) const;
+  double_int operator - () const;
+  double_int operator ~ () const;
+  double_int operator & (double_int) const;
+  double_int operator | (double_int) const;
+  double_int operator ^ (double_int) const;
+  double_int and_not (double_int) const;
+
+  double_int lshift (HOST_WIDE_INT count, unsigned int prec, bool arith) const;
+  double_int rshift (HOST_WIDE_INT count, unsigned int prec, bool arith) const;
+  double_int alshift (HOST_WIDE_INT count, unsigned int prec) const;
+  double_int arshift (HOST_WIDE_INT count, unsigned int prec) const;
+  double_int llshift (HOST_WIDE_INT count, unsigned int prec) const;
+  double_int lrshift (HOST_WIDE_INT count, unsigned int prec) const;
+  double_int lrotate (HOST_WIDE_INT count, unsigned int prec) const;
+  double_int rrotate (HOST_WIDE_INT count, unsigned int prec) const;
+
+  /* You must ensure that double_int::ext is called on the operands
+     of the following operations, if the precision of the numbers
+     is less than HOST_BITS_PER_DOUBLE_INT bits.  */
+
+  double_int div (double_int, bool, unsigned) const;
+  double_int sdiv (double_int, unsigned) const;
+  double_int udiv (double_int, unsigned) const;
+  double_int mod (double_int, bool, unsigned) const;
+  double_int smod (double_int, unsigned) const;
+  double_int umod (double_int, unsigned) const;
+  double_int divmod_with_overflow (double_int, bool, unsigned,
+				   double_int *, bool *) const;
+  double_int divmod (double_int, bool, unsigned, double_int *) const;
+  double_int sdivmod (double_int, unsigned, double_int *) const;
+  double_int udivmod (double_int, unsigned, double_int *) const;
+
+  /* Precision control functions.  */
+
+  double_int ext (unsigned prec, bool uns) const;
+  double_int zext (unsigned prec) const;
+  double_int sext (unsigned prec) const;
+
+  /* Comparative functions.  */
+
+  bool is_zero () const;
+  bool is_one () const;
+  bool is_minus_one () const;
+  bool is_negative () const;
+
+  int cmp (double_int b, bool uns) const;
+  int ucmp (double_int b) const;
+  int scmp (double_int b) const;
+
+  bool ult (double_int b) const;
+  bool ule (double_int b) const;
+  bool ugt (double_int b) const;
+  bool slt (double_int b) const;
+  bool sle (double_int b) const;
+  bool sgt (double_int b) const;
+
+  double_int max (double_int b, bool uns);
+  double_int smax (double_int b);
+  double_int umax (double_int b);
+
+  double_int min (double_int b, bool uns);
+  double_int smin (double_int b);
+  double_int umin (double_int b);
+
+  bool operator == (double_int cst2) const;
+  bool operator != (double_int cst2) const;
+
+  /* Please migrate away from using these member variables publically.  */
+
+  unsigned HOST_WIDE_INT low;
+  HOST_WIDE_INT high;
+
+};
+
+#define HOST_BITS_PER_DOUBLE_INT (2 * HOST_BITS_PER_WIDE_INT)
+
+/* Constructors and conversions.  */
+
+/* Constructs double_int from integer CST.  The bits over the precision of
+   HOST_WIDE_INT are filled with the sign bit.  */
+
+inline double_int
+double_int::from_shwi (HOST_WIDE_INT cst)
+{
+  double_int r;
+  r.low = (unsigned HOST_WIDE_INT) cst;
+  r.high = cst < 0 ? -1 : 0;
+  return r;
+}
+
+/* Some useful constants.  */
+/* FIXME(crowl): Maybe remove after converting callers?
+   The problem is that a named constant would not be as optimizable,
+   while the functional syntax is more verbose.  */
+
+#define double_int_minus_one (double_int::from_shwi (-1))
+#define double_int_zero (double_int::from_shwi (0))
+#define double_int_one (double_int::from_shwi (1))
+#define double_int_two (double_int::from_shwi (2))
+#define double_int_ten (double_int::from_shwi (10))
+
+/* Constructs double_int from unsigned integer CST.  The bits over the
+   precision of HOST_WIDE_INT are filled with zeros.  */
+
+inline double_int
+double_int::from_uhwi (unsigned HOST_WIDE_INT cst)
+{
+  double_int r;
+  r.low = cst;
+  r.high = 0;
+  return r;
+}
+
+inline double_int
+double_int::from_pair (HOST_WIDE_INT high, unsigned HOST_WIDE_INT low)
+{
+  double_int r;
+  r.low = low;
+  r.high = high;
+  return r;
+}
+
+inline double_int &
+double_int::operator ++ ()
+{
+  *this += double_int_one;
+  return *this;
+}
+
+inline double_int &
+double_int::operator -- ()
+{
+  *this -= double_int_one;
+  return *this;
+}
+
+inline double_int &
+double_int::operator *= (double_int b)
+{
+  *this = *this * b;
+  return *this;
+}
+
+inline double_int &
+double_int::operator += (double_int b)
+{
+  *this = *this + b;
+  return *this;
+}
+
+inline double_int &
+double_int::operator -= (double_int b)
+{
+  *this = *this - b;
+  return *this;
+}
+
+inline double_int &
+double_int::operator &= (double_int b)
+{
+  *this = *this & b;
+  return *this;
+}
+
+inline double_int &
+double_int::operator ^= (double_int b)
+{
+  *this = *this ^ b;
+  return *this;
+}
+
+inline double_int &
+double_int::operator |= (double_int b)
+{
+  *this = *this | b;
+  return *this;
+}
+
+/* Returns value of CST as a signed number.  CST must satisfy
+   double_int::fits_signed.  */
+
+inline HOST_WIDE_INT
+double_int::to_shwi () const
+{
+  return (HOST_WIDE_INT) low;
+}
+
+/* Returns value of CST as an unsigned number.  CST must satisfy
+   double_int::fits_unsigned.  */
+
+inline unsigned HOST_WIDE_INT
+double_int::to_uhwi () const
+{
+  return low;
+}
+
+/* Returns true if CST fits in unsigned HOST_WIDE_INT.  */
+
+inline bool
+double_int::fits_uhwi () const
+{
+  return high == 0;
+}
+
+/* Logical operations.  */
+
+/* Returns ~A.  */
+
+inline double_int
+double_int::operator ~ () const
+{
+  double_int result;
+  result.low = ~low;
+  result.high = ~high;
+  return result;
+}
+
+/* Returns A | B.  */
+
+inline double_int
+double_int::operator | (double_int b) const
+{
+  double_int result;
+  result.low = low | b.low;
+  result.high = high | b.high;
+  return result;
+}
+
+/* Returns A & B.  */
+
+inline double_int
+double_int::operator & (double_int b) const
+{
+  double_int result;
+  result.low = low & b.low;
+  result.high = high & b.high;
+  return result;
+}
+
+/* Returns A & ~B.  */
+
+inline double_int
+double_int::and_not (double_int b) const
+{
+  double_int result;
+  result.low = low & ~b.low;
+  result.high = high & ~b.high;
+  return result;
+}
+
+/* Returns A ^ B.  */
+
+inline double_int
+double_int::operator ^ (double_int b) const
+{
+  double_int result;
+  result.low = low ^ b.low;
+  result.high = high ^ b.high;
+  return result;
+}
+
+void dump_double_int (FILE *, double_int, bool);
+
+#define ALL_ONES (~((unsigned HOST_WIDE_INT) 0))
+
+/* The operands of the following comparison functions must be processed
+   with double_int_ext, if their precision is less than
+   HOST_BITS_PER_DOUBLE_INT bits.  */
+
+/* Returns true if CST is zero.  */
+
+inline bool
+double_int::is_zero () const
+{
+  return low == 0 && high == 0;
+}
+
+/* Returns true if CST is one.  */
+
+inline bool
+double_int::is_one () const
+{
+  return low == 1 && high == 0;
+}
+
+/* Returns true if CST is minus one.  */
+
+inline bool
+double_int::is_minus_one () const
+{
+  return low == ALL_ONES && high == -1;
+}
+
+/* Returns true if CST is negative.  */
+
+inline bool
+double_int::is_negative () const
+{
+  return high < 0;
+}
+
+/* Returns true if CST1 == CST2.  */
+
+inline bool
+double_int::operator == (double_int cst2) const
+{
+  return low == cst2.low && high == cst2.high;
+}
+
+/* Returns true if CST1 != CST2.  */
+
+inline bool
+double_int::operator != (double_int cst2) const
+{
+  return low != cst2.low || high != cst2.high;
+}
+
+/* Return number of set bits of CST.  */
+
+inline int
+double_int::popcount () const
+{
+  return popcount_hwi (high) + popcount_hwi (low);
+}
+
+
+#ifndef GENERATOR_FILE
+/* Conversion to and from GMP integer representations.  */
+
+void mpz_set_double_int (mpz_t, double_int, bool);
+double_int mpz_get_double_int (const_tree, mpz_t, bool);
+#endif
+
+#endif /* DOUBLE_INT_H */