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* real.h (N): Special case 128 bit doubles.

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From-SVN: r51229
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Alan Modra 2002-03-23 11:57:29 +00:00 committed by Alan Modra
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gcc/ChangeLog
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@ -1,5 +1,7 @@
2002-03-23 Alan Modra <amodra@bigpond.net.au>
* real.h (N): Special case 128 bit doubles.
* combine.c (simplify_comparison): When widening modes, ignore
sign extension on CONST_INTs.

5
gcc/real.h
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@ -77,7 +77,12 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
/* REAL_VALUE_TYPE is an array of the minimum number of HOST_WIDE_INTs
required to hold MAX_LONG_DOUBLE_TYPE_SIZE bits. */
#if MAX_LONG_DOUBLE_TYPE_SIZE == 128
/* For 128 bit reals, we calculate internally with extra precision. */
#define N (160 / BITS_PER_UNIT)
#else
#define N (MAX_LONG_DOUBLE_TYPE_SIZE / BITS_PER_UNIT)
#endif
#define S sizeof (HOST_WIDE_INT)
typedef struct {
HOST_WIDE_INT r[N/S + (N%S ? 1 : 0)]; /* round up */