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re PR libgcc/78804 ([RX] -m64bit-doubles does not work) 

libgcc/
	PR libgcc/78804
	* fp-bit.h: Remove FLOAT_BIT_ORDER_MISMATCH.
	* fp-bit.c (pack_d, unpack_d): Remove special cases for
	FLOAT_BIT_ORDER_MISMATCH.
	* config/arc/t-arc: Remove FLOAT_BIT_ORDER_MISMATCH.

From-SVN: r277752
This commit is contained in:
Oleg Endo 2019-11-03 12:09:26 +00:00
parent e3200f1d33
commit da5c1bbe97
4 changed files with 12 additions and 32 deletions
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8
libgcc/ChangeLog
View File

@ -1,3 +1,11 @@
2019-11-03 Oleg Endo <olegendo@gcc.gnu.org>
PR libgcc/78804
* fp-bit.h: Remove FLOAT_BIT_ORDER_MISMATCH.
* fp-bit.c (pack_d, unpack_d): Remove special cases for
FLOAT_BIT_ORDER_MISMATCH.
* config/arc/t-arc: Remove FLOAT_BIT_ORDER_MISMATCH.
2019-11-01 Jim Wilson <jimw@sifive.com>
* config/riscv/t-softfp32 (softfp_extra): Add FP divide routines

2
libgcc/config/arc/t-arc
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@ -46,7 +46,6 @@ LIB2ADD = fp-bit.c dp-bit.c
dp-bit.c: $(srcdir)/fp-bit.c
echo '#ifndef __big_endian__' > dp-bit.c
echo '#define FLOAT_BIT_ORDER_MISMATCH' >> dp-bit.c
echo '#endif' >> dp-bit.c
echo '#include "fp-bit.h"' >> dp-bit.c
echo '#include "config/arc/dp-hack.h"' >> dp-bit.c
@ -55,7 +54,6 @@ dp-bit.c: $(srcdir)/fp-bit.c
fp-bit.c: $(srcdir)/fp-bit.c
echo '#define FLOAT' > fp-bit.c
echo '#ifndef __big_endian__' >> fp-bit.c
echo '#define FLOAT_BIT_ORDER_MISMATCH' >> fp-bit.c
echo '#endif' >> fp-bit.c
echo '#include "config/arc/fp-hack.h"' >> fp-bit.c
cat $(srcdir)/fp-bit.c >> fp-bit.c

20
libgcc/fp-bit.c
View File

@ -316,12 +316,7 @@ pack_d (const fp_number_type *src)
/* We previously used bitfields to store the number, but this doesn't
handle little/big endian systems conveniently, so use shifts and
masks */
#ifdef FLOAT_BIT_ORDER_MISMATCH
dst.bits.fraction = fraction;
dst.bits.exp = exp;
dst.bits.sign = sign;
#else
# if defined TFLOAT && defined HALFFRACBITS
#if defined TFLOAT && defined HALFFRACBITS
{
halffractype high, low, unity;
int lowsign, lowexp;
@ -394,11 +389,10 @@ pack_d (const fp_number_type *src)
}
dst.value_raw = ((fractype) high << HALFSHIFT) | low;
}
# else
#else
dst.value_raw = fraction & ((((fractype)1) << FRACBITS) - (fractype)1);
dst.value_raw |= ((fractype) (exp & ((1 << EXPBITS) - 1))) << FRACBITS;
dst.value_raw |= ((fractype) (sign & 1)) << (FRACBITS | EXPBITS);
# endif
#endif
#if defined(FLOAT_WORD_ORDER_MISMATCH) && !defined(FLOAT)
@ -450,12 +444,7 @@ unpack_d (FLO_union_type * src, fp_number_type * dst)
src = &swapped;
#endif
#ifdef FLOAT_BIT_ORDER_MISMATCH
fraction = src->bits.fraction;
exp = src->bits.exp;
sign = src->bits.sign;
#else
# if defined TFLOAT && defined HALFFRACBITS
#if defined TFLOAT && defined HALFFRACBITS
{
halffractype high, low;
@ -498,11 +487,10 @@ unpack_d (FLO_union_type * src, fp_number_type * dst)
}
}
}
# else
#else
fraction = src->value_raw & ((((fractype)1) << FRACBITS) - 1);
exp = ((int)(src->value_raw >> FRACBITS)) & ((1 << EXPBITS) - 1);
sign = ((int)(src->value_raw >> (FRACBITS + EXPBITS))) & 1;
# endif
#endif
dst->sign = sign;

14
libgcc/fp-bit.h
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@ -128,10 +128,6 @@ typedef unsigned int UTItype __attribute__ ((mode (TI)));
#define NO_DI_MODE
#endif
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define FLOAT_BIT_ORDER_MISMATCH
#endif
#if __BYTE_ORDER__ != __FLOAT_WORD_ORDER__
#define FLOAT_WORD_ORDER_MISMATCH
#endif
@ -354,16 +350,6 @@ typedef union
# endif
#endif
#ifdef FLOAT_BIT_ORDER_MISMATCH
struct
{
fractype fraction:FRACBITS __attribute__ ((packed));
unsigned int exp:EXPBITS __attribute__ ((packed));
unsigned int sign:1 __attribute__ ((packed));
}
bits;
#endif
#ifdef _DEBUG_BITFLOAT
struct
{