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hwint.c (sext_hwi, zext_hwi): New functions.

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2013-04-03  Kenneth Zadeck <zadeck@naturalbridge.com>

	* hwint.c (sext_hwi, zext_hwi): New functions.
	* hwint.h (HOST_BITS_PER_HALF_WIDE_INT, HOST_HALF_WIDE_INT,
	HOST_HALF_WIDE_INT_PRINT, HOST_HALF_WIDE_INT_PRINT_C,
	HOST_HALF_WIDE_INT_PRINT_DEC, HOST_HALF_WIDE_INT_PRINT_DEC_C,
	HOST_HALF_WIDE_INT_PRINT_UNSIGNED, HOST_HALF_WIDE_INT_PRINT_HEX,
	HOST_HALF_WIDE_INT_PRINT_HEX_PURE): New symbols.
	(sext_hwi, zext_hwi): New functions.

From-SVN: r197456
This commit is contained in:
Kenneth Zadeck 2013-04-03 20:24:07 +00:00 • committed by Kenneth Zadeck
parent be672e08bb
commit 5e0919f1ee
3 changed files with 114 additions and 0 deletions
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10
gcc/ChangeLog
View file

@ -1,3 +1,13 @@
2013-04-03 Kenneth Zadeck <zadeck@naturalbridge.com>
* hwint.c (sext_hwi, zext_hwi): New functions.
* hwint.h (HOST_BITS_PER_HALF_WIDE_INT, HOST_HALF_WIDE_INT,
HOST_HALF_WIDE_INT_PRINT, HOST_HALF_WIDE_INT_PRINT_C,
HOST_HALF_WIDE_INT_PRINT_DEC, HOST_HALF_WIDE_INT_PRINT_DEC_C,
HOST_HALF_WIDE_INT_PRINT_UNSIGNED, HOST_HALF_WIDE_INT_PRINT_HEX,
HOST_HALF_WIDE_INT_PRINT_HEX_PURE): New symbols.
(sext_hwi, zext_hwi): New functions.
2013-04-03 Jeff Law <law@redhat.com>
PR tree-optimization/56799

32
gcc/hwint.c
View file

@ -204,3 +204,35 @@ least_common_multiple (HOST_WIDE_INT a, HOST_WIDE_INT b)
{
return mul_hwi (abs_hwi (a) / gcd (a, b), abs_hwi (b));
}
#ifdef ENABLE_CHECKING
/* Sign extend SRC starting from PREC. */
HOST_WIDE_INT
sext_hwi (HOST_WIDE_INT src, unsigned int prec)
{
gcc_checking_assert (prec <= HOST_BITS_PER_WIDE_INT);
if (prec == HOST_BITS_PER_WIDE_INT)
return src;
else
{
int shift = HOST_BITS_PER_WIDE_INT - prec;
return (src << shift) >> shift;
}
}
/* Zero extend SRC starting from PREC. */
unsigned HOST_WIDE_INT
zext_hwi (unsigned HOST_WIDE_INT src, unsigned int prec)
{
gcc_checking_assert (prec <= HOST_BITS_PER_WIDE_INT);
if (prec == HOST_BITS_PER_WIDE_INT)
return src;
else
return src & (((HOST_WIDE_INT)1 << prec) - 1);
}
#endif

72
gcc/hwint.h
View file

@ -76,6 +76,40 @@ extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];
# 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_1 HOST_WIDE_INT_C(1)
/* This is a magic identifier which allows GCC to figure out the type
@ -93,9 +127,13 @@ typedef HOST_WIDE_INT __gcc_host_wide_int__;
# 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
@ -103,6 +141,8 @@ typedef HOST_WIDE_INT __gcc_host_wide_int__;
/* 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"
@ -276,4 +316,36 @@ 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. */
#ifdef ENABLE_CHECKING
extern HOST_WIDE_INT sext_hwi (HOST_WIDE_INT, unsigned int);
#else
static inline HOST_WIDE_INT
sext_hwi (HOST_WIDE_INT src, unsigned int prec)
{
if (prec == HOST_BITS_PER_WIDE_INT)
return src;
else
{
int shift = HOST_BITS_PER_WIDE_INT - prec;
return (src << shift) >> shift;
}
}
#endif
/* Zero extend SRC starting from PREC. */
#ifdef ENABLE_CHECKING
extern unsigned HOST_WIDE_INT zext_hwi (unsigned HOST_WIDE_INT, unsigned int);
#else
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
return src & (((HOST_WIDE_INT)1 << prec) - 1);
}
#endif
#endif /* ! GCC_HWINT_H */