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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/hwint.h | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/hwint.h')
-rw-r--r-- | gcc-4.9/gcc/hwint.h | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/hwint.h b/gcc-4.9/gcc/hwint.h new file mode 100644 index 000000000..229fb94b5 --- /dev/null +++ b/gcc-4.9/gcc/hwint.h @@ -0,0 +1,351 @@ +/* HOST_WIDE_INT definitions for the GNU compiler. + Copyright (C) 1998-2014 Free Software Foundation, Inc. + + This file is part of GCC. + + Provide definitions for macros which depend on HOST_BITS_PER_INT + and HOST_BITS_PER_LONG. */ + +#ifndef GCC_HWINT_H +#define GCC_HWINT_H + +/* This describes the machine the compiler is hosted on. */ +#define HOST_BITS_PER_CHAR CHAR_BIT +#define HOST_BITS_PER_SHORT (CHAR_BIT * SIZEOF_SHORT) +#define HOST_BITS_PER_INT (CHAR_BIT * SIZEOF_INT) +#define HOST_BITS_PER_LONG (CHAR_BIT * SIZEOF_LONG) + +/* The string that should be inserted into a printf style format to + indicate a "long" operand. */ +#ifndef HOST_LONG_FORMAT +#define HOST_LONG_FORMAT "l" +#endif + +/* The string that should be inserted into a printf style format to + indicate a "long long" operand. */ +#ifndef HOST_LONG_LONG_FORMAT +#define HOST_LONG_LONG_FORMAT "ll" +#endif + +/* If HAVE_LONG_LONG and SIZEOF_LONG_LONG aren't defined, but + GCC_VERSION >= 3000, assume this is the second or later stage of a + bootstrap, we do have long long, and it's 64 bits. (This is + required by C99; we do have some ports that violate that assumption + but they're all cross-compile-only.) Just in case, force a + constraint violation if that assumption is incorrect. */ +#if !defined HAVE_LONG_LONG +# if GCC_VERSION >= 3000 +# define HAVE_LONG_LONG 1 +# define SIZEOF_LONG_LONG 8 +extern char sizeof_long_long_must_be_8[sizeof (long long) == 8 ? 1 : -1]; +# endif +#endif + +#ifdef HAVE_LONG_LONG +# define HOST_BITS_PER_LONGLONG (CHAR_BIT * SIZEOF_LONG_LONG) +#endif +#ifdef HAVE___INT64 +# define HOST_BITS_PER___INT64 (CHAR_BIT * SIZEOF___INT64) +#endif + +/* Set HOST_WIDE_INT. This should be the widest efficient host + integer type. It can be 32 or 64 bits, except that if we are + targeting a machine with 64-bit size_t then it has to be 64 bits. + + With a sane ABI, 'long' is the largest efficient host integer type. + Thus, we use that unless we have to use 'long long' or '__int64' + because we're targeting a 64-bit machine from a 32-bit host. */ + +#if HOST_BITS_PER_LONG >= 64 || !defined NEED_64BIT_HOST_WIDE_INT +# define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG +# define HOST_WIDE_INT long +# define HOST_WIDE_INT_C(X) X ## L +#else +# if HOST_BITS_PER_LONGLONG >= 64 +# define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONGLONG +# define HOST_WIDE_INT long long +# define HOST_WIDE_INT_C(X) X ## LL +# else +# if HOST_BITS_PER___INT64 >= 64 +# define HOST_BITS_PER_WIDE_INT HOST_BITS_PER___INT64 +# define HOST_WIDE_INT __int64 +# define HOST_WIDE_INT_C(X) X ## i64 +# else + #error "Unable to find a suitable type for HOST_WIDE_INT" +# endif +# endif +#endif + +/* Print support for half a host wide int. */ +#define HOST_BITS_PER_HALF_WIDE_INT (HOST_BITS_PER_WIDE_INT / 2) +#if HOST_BITS_PER_HALF_WIDE_INT == HOST_BITS_PER_LONG +# define HOST_HALF_WIDE_INT long +# define HOST_HALF_WIDE_INT_PRINT HOST_LONG_FORMAT +# define HOST_HALF_WIDE_INT_PRINT_C "L" +# define HOST_HALF_WIDE_INT_PRINT_DEC "%" HOST_HALF_WIDE_INT_PRINT "d" +# define HOST_HALF_WIDE_INT_PRINT_DEC_C HOST_HALF_WIDE_INT_PRINT_DEC HOST_HALF_WIDE_INT_PRINT_C +# define HOST_HALF_WIDE_INT_PRINT_UNSIGNED "%" HOST_HALF_WIDE_INT_PRINT "u" +# define HOST_HALF_WIDE_INT_PRINT_HEX "%#" HOST_HALF_WIDE_INT_PRINT "x" +# define HOST_HALF_WIDE_INT_PRINT_HEX_PURE "%" HOST_HALF_WIDE_INT_PRINT "x" +#elif HOST_BITS_PER_HALF_WIDE_INT == HOST_BITS_PER_INT +# define HOST_HALF_WIDE_INT int +# define HOST_HALF_WIDE_INT_PRINT "" +# define HOST_HALF_WIDE_INT_PRINT_C "" +# define HOST_HALF_WIDE_INT_PRINT_DEC "%" HOST_HALF_WIDE_INT_PRINT "d" +# define HOST_HALF_WIDE_INT_PRINT_DEC_C HOST_HALF_WIDE_INT_PRINT_DEC HOST_HALF_WIDE_INT_PRINT_C +# define HOST_HALF_WIDE_INT_PRINT_UNSIGNED "%" HOST_HALF_WIDE_INT_PRINT "u" +# define HOST_HALF_WIDE_INT_PRINT_HEX "%#" HOST_HALF_WIDE_INT_PRINT "x" +# define HOST_HALF_WIDE_INT_PRINT_HEX_PURE "%" HOST_HALF_WIDE_INT_PRINT "x" +#elif HOST_BITS_PER_HALF_WIDE_INT == HOST_BITS_PER_SHORT +# define HOST_HALF_WIDE_INT short +# define HOST_HALF_WIDE_INT_PRINT "" +# define HOST_HALF_WIDE_INT_PRINT_C "" +# define HOST_HALF_WIDE_INT_PRINT_DEC "%" HOST_HALF_WIDE_INT_PRINT "d" +# define HOST_HALF_WIDE_INT_PRINT_DEC_C HOST_HALF_WIDE_INT_PRINT_DEC HOST_HALF_WIDE_INT_PRINT_C +# define HOST_HALF_WIDE_INT_PRINT_UNSIGNED "%" HOST_HALF_WIDE_INT_PRINT "u" +# define HOST_HALF_WIDE_INT_PRINT_HEX "%#" HOST_HALF_WIDE_INT_PRINT "x" +# define HOST_HALF_WIDE_INT_PRINT_HEX_PURE "%" HOST_HALF_WIDE_INT_PRINT "x" +#else +#error Please add support for HOST_HALF_WIDE_INT +#endif + + +#define HOST_WIDE_INT_UC(X) HOST_WIDE_INT_C (X ## U) +#define HOST_WIDE_INT_1 HOST_WIDE_INT_C (1) +#define HOST_WIDE_INT_1U HOST_WIDE_INT_UC (1) +#define HOST_WIDE_INT_M1 HOST_WIDE_INT_C (-1) +#define HOST_WIDE_INT_M1U HOST_WIDE_INT_UC (-1) + +/* This is a magic identifier which allows GCC to figure out the type + of HOST_WIDE_INT for %wd specifier checks. You must issue this + typedef before using the __asm_fprintf__ format attribute. */ +typedef HOST_WIDE_INT __gcc_host_wide_int__; + +/* Various printf format strings for HOST_WIDE_INT. */ + +#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG +# define HOST_WIDE_INT_PRINT HOST_LONG_FORMAT +# define HOST_WIDE_INT_PRINT_C "L" + /* 'long' might be 32 or 64 bits, and the number of leading zeroes + must be tweaked accordingly. */ +# if HOST_BITS_PER_WIDE_INT == 64 +# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \ + "0x%" HOST_LONG_FORMAT "x%016" HOST_LONG_FORMAT "x" +# define HOST_WIDE_INT_PRINT_PADDED_HEX \ + "%016" HOST_LONG_FORMAT "x" +# else +# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \ + "0x%" HOST_LONG_FORMAT "x%08" HOST_LONG_FORMAT "x" +# define HOST_WIDE_INT_PRINT_PADDED_HEX \ + "%08" HOST_LONG_FORMAT "x" +# endif +#else +# define HOST_WIDE_INT_PRINT HOST_LONG_LONG_FORMAT +# define HOST_WIDE_INT_PRINT_C "LL" + /* We can assume that 'long long' is at least 64 bits. */ +# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \ + "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x" +# define HOST_WIDE_INT_PRINT_PADDED_HEX \ + "%016" HOST_LONG_LONG_FORMAT "x" +#endif /* HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG */ + +#define HOST_WIDE_INT_PRINT_DEC "%" HOST_WIDE_INT_PRINT "d" +#define HOST_WIDE_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC HOST_WIDE_INT_PRINT_C +#define HOST_WIDE_INT_PRINT_UNSIGNED "%" HOST_WIDE_INT_PRINT "u" +#define HOST_WIDE_INT_PRINT_HEX "%#" HOST_WIDE_INT_PRINT "x" +#define HOST_WIDE_INT_PRINT_HEX_PURE "%" HOST_WIDE_INT_PRINT "x" + +/* Set HOST_WIDEST_INT. This is a 64-bit type unless the compiler + in use has no 64-bit type at all; in that case it's 32 bits. */ + +#if HOST_BITS_PER_WIDE_INT >= 64 \ + || (HOST_BITS_PER_LONGLONG < 64 && HOST_BITS_PER___INT64 < 64) +# define HOST_WIDEST_INT HOST_WIDE_INT +# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_WIDE_INT +# define HOST_WIDEST_INT_PRINT HOST_WIDE_INT_PRINT +# define HOST_WIDEST_INT_PRINT_DEC HOST_WIDE_INT_PRINT_DEC +# define HOST_WIDEST_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC_C +# define HOST_WIDEST_INT_PRINT_UNSIGNED HOST_WIDE_INT_PRINT_UNSIGNED +# define HOST_WIDEST_INT_PRINT_HEX HOST_WIDE_INT_PRINT_HEX +# define HOST_WIDEST_INT_PRINT_DOUBLE_HEX HOST_WIDE_INT_PRINT_DOUBLE_HEX +# define HOST_WIDEST_INT_C(X) HOST_WIDE_INT (X) +#else +# if HOST_BITS_PER_LONGLONG >= 64 +# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG +# define HOST_WIDEST_INT long long +# define HOST_WIDEST_INT_C(X) X ## LL +# else +# if HOST_BITS_PER___INT64 >= 64 +# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER___INT64 +# define HOST_WIDEST_INT __int64 +# define HOST_WIDEST_INT_C(X) X ## i64 +# else + #error "This line should be impossible to reach" +# endif +# endif +# define HOST_WIDEST_INT_PRINT HOST_LONG_LONG_FORMAT +# define HOST_WIDEST_INT_PRINT_DEC "%" HOST_LONG_LONG_FORMAT "d" +# define HOST_WIDEST_INT_PRINT_DEC_C "%" HOST_LONG_LONG_FORMAT "dLL" +# define HOST_WIDEST_INT_PRINT_UNSIGNED "%" HOST_LONG_LONG_FORMAT "u" +# define HOST_WIDEST_INT_PRINT_HEX "%#" HOST_LONG_LONG_FORMAT "x" +# define HOST_WIDEST_INT_PRINT_DOUBLE_HEX \ + "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x" +#endif + +/* Define HOST_WIDEST_FAST_INT to the widest integer type supported + efficiently in hardware. (That is, the widest integer type that fits + in a hardware register.) Normally this is "long" but on some hosts it + should be "long long" or "__int64". This is no convenient way to + autodetect this, so such systems must set a flag in config.host; see there + for details. */ + +#ifdef USE_LONG_LONG_FOR_WIDEST_FAST_INT +# ifdef HAVE_LONG_LONG +# define HOST_WIDEST_FAST_INT long long +# define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONGLONG +# elif defined (HAVE___INT64) +# define HOST_WIDEST_FAST_INT __int64 +# define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER___INT64 +# else +# error "Your host said it wanted to use long long or __int64 but neither" +# error "exist" +# endif +#else +# define HOST_WIDEST_FAST_INT long +# define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONG +#endif + +/* Inline functions operating on HOST_WIDE_INT. */ +#if GCC_VERSION < 3004 + +extern int clz_hwi (unsigned HOST_WIDE_INT x); +extern int ctz_hwi (unsigned HOST_WIDE_INT x); +extern int ffs_hwi (unsigned HOST_WIDE_INT x); + +/* Return the number of set bits in X. */ +extern int popcount_hwi (unsigned HOST_WIDE_INT x); + +/* Return log2, or -1 if not exact. */ +extern int exact_log2 (unsigned HOST_WIDE_INT); + +/* Return floor of log2, with -1 for zero. */ +extern int floor_log2 (unsigned HOST_WIDE_INT); + +/* Return the smallest n such that 2**n >= X. */ +extern int ceil_log2 (unsigned HOST_WIDE_INT); + +#else /* GCC_VERSION >= 3004 */ + +/* For convenience, define 0 -> word_size. */ +static inline int +clz_hwi (unsigned HOST_WIDE_INT x) +{ + if (x == 0) + return HOST_BITS_PER_WIDE_INT; +# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG + return __builtin_clzl (x); +# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG + return __builtin_clzll (x); +# else + return __builtin_clz (x); +# endif +} + +static inline int +ctz_hwi (unsigned HOST_WIDE_INT x) +{ + if (x == 0) + return HOST_BITS_PER_WIDE_INT; +# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG + return __builtin_ctzl (x); +# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG + return __builtin_ctzll (x); +# else + return __builtin_ctz (x); +# endif +} + +static inline int +ffs_hwi (unsigned HOST_WIDE_INT x) +{ +# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG + return __builtin_ffsl (x); +# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG + return __builtin_ffsll (x); +# else + return __builtin_ffs (x); +# endif +} + +static inline int +popcount_hwi (unsigned HOST_WIDE_INT x) +{ +# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG + return __builtin_popcountl (x); +# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG + return __builtin_popcountll (x); +# else + return __builtin_popcount (x); +# endif +} + +static inline int +floor_log2 (unsigned HOST_WIDE_INT x) +{ + return HOST_BITS_PER_WIDE_INT - 1 - clz_hwi (x); +} + +static inline int +ceil_log2 (unsigned HOST_WIDE_INT x) +{ + return floor_log2 (x - 1) + 1; +} + +static inline int +exact_log2 (unsigned HOST_WIDE_INT x) +{ + return x == (x & -x) && x ? ctz_hwi (x) : -1; +} + +#endif /* GCC_VERSION >= 3004 */ + +#define HOST_WIDE_INT_MIN (HOST_WIDE_INT) \ + ((unsigned HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT - 1)) +#define HOST_WIDE_INT_MAX (~(HOST_WIDE_INT_MIN)) + +extern HOST_WIDE_INT abs_hwi (HOST_WIDE_INT); +extern unsigned HOST_WIDE_INT absu_hwi (HOST_WIDE_INT); +extern HOST_WIDE_INT gcd (HOST_WIDE_INT, HOST_WIDE_INT); +extern HOST_WIDE_INT pos_mul_hwi (HOST_WIDE_INT, HOST_WIDE_INT); +extern HOST_WIDE_INT mul_hwi (HOST_WIDE_INT, HOST_WIDE_INT); +extern HOST_WIDE_INT least_common_multiple (HOST_WIDE_INT, HOST_WIDE_INT); + +/* Sign extend SRC starting from PREC. */ + +static inline HOST_WIDE_INT +sext_hwi (HOST_WIDE_INT src, unsigned int prec) +{ + if (prec == HOST_BITS_PER_WIDE_INT) + return src; + else + { + gcc_checking_assert (prec < HOST_BITS_PER_WIDE_INT); + int shift = HOST_BITS_PER_WIDE_INT - prec; + return (src << shift) >> shift; + } +} + +/* Zero extend SRC starting from PREC. */ +static inline unsigned HOST_WIDE_INT +zext_hwi (unsigned HOST_WIDE_INT src, unsigned int prec) +{ + if (prec == HOST_BITS_PER_WIDE_INT) + return src; + else + { + gcc_checking_assert (prec < HOST_BITS_PER_WIDE_INT); + return src & (((HOST_WIDE_INT) 1 << prec) - 1); + } +} + +#endif /* ! GCC_HWINT_H */ |