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Makefile.in (double-int.o): Add $(TOPLEV_H) dependency.

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2010-08-04  Richard Guenther  <rguenther@suse.de>

	* Makefile.in (double-int.o): Add $(TOPLEV_H) dependency.
	* double-int.h (double_int_ctz): Declare.
	* double-int.c (double_int_ctz): New function.

From-SVN: r162859
This commit is contained in:
Richard Guenther 2010-08-04 09:15:51 +00:00 committed by Richard Biener
parent 31af83671c
commit 552cbe64b6
4 changed files with 31 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-08-04 Richard Guenther <rguenther@suse.de>
* Makefile.in (double-int.o): Add $(TOPLEV_H) dependency.
* double-int.h (double_int_ctz): Declare.
* double-int.c (double_int_ctz): New function.
2010-08-04 Hariharan Sandanagobalane <hariharan@picochip.com>
* config/picochip/picochip.c (TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE):

3
gcc/Makefile.in
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@ -2279,7 +2279,8 @@ stringpool.o: stringpool.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
convert.o: convert.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) \
$(FLAGS_H) convert.h $(TOPLEV_H) $(DIAGNOSTIC_CORE_H) langhooks.h
double-int.o: double-int.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H)
double-int.o: double-int.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
$(TOPLEV_H) $(TREE_H)
# lto-compress.o needs $(ZLIBINC) added to the include flags.
lto-compress.o: lto-compress.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \

21
gcc/double-int.c
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@ -22,6 +22,7 @@ along with GCC; see the file COPYING3. If not see
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "toplev.h"
/* We know that A1 + B1 = SUM1, using 2's complement arithmetic and ignoring
overflow. Suppose A, B and SUM have the same respective signs as A1, B1,
@ -850,6 +851,26 @@ double_int_setbit (double_int a, unsigned bitpos)
return a;
}
/* Count trailing zeros in A. */
int
double_int_ctz (double_int a)
{
unsigned HOST_WIDE_INT w = a.low ? a.low : (unsigned HOST_WIDE_INT) a.high;
unsigned bits = a.low ? 0 : HOST_BITS_PER_WIDE_INT;
if (!w)
return HOST_BITS_PER_DOUBLE_INT;
#if (GCC_VERSION >= 3004)
bits += CTZ_HWI (w);
#else
while (!(w & 1))
{
w >>= 1;
bits += 1;
}
#endif
return bits;
}
/* Shift A left by COUNT places keeping only PREC bits of result. Shift
right if COUNT is negative. ARITH true specifies arithmetic shifting;
otherwise use logical shift. */

2
gcc/double-int.h
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@ -148,7 +148,9 @@ double_int double_int_umod (double_int, double_int, unsigned);
double_int double_int_divmod (double_int, double_int, bool, unsigned, double_int *);
double_int double_int_sdivmod (double_int, double_int, unsigned, double_int *);
double_int double_int_udivmod (double_int, double_int, unsigned, double_int *);
double_int double_int_setbit (double_int, unsigned);
int double_int_ctz (double_int);
/* Logical operations. */