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(store_split_bit_field): When adjust arg in BYTES_BIT_ENDIAN case...

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(store_split_bit_field): When adjust arg in BYTES_BIT_ENDIAN case, use
number of bits in arg for MEM operands and BITS_PER_WORD for other
operands.
(extract_fixed_bit_field): Undo last change.

From-SVN: r9911
This commit is contained in:
Richard Kenner 1995-06-08 19:21:13 -04:00
parent 68450062d9
commit 37811a734e
1 changed files with 14 additions and 6 deletions

20
gcc/expmed.c

@ -770,6 +770,16 @@ store_split_bit_field (op0, bitsize, bitpos, value, align)
if (BYTES_BIG_ENDIAN)
{
int total_bits;
/* We must do an endian conversion exactly the same way as it is
done in extract_bit_field, so that the two calls to
extract_fixed_bit_field will have comparable arguments. */
if (GET_CODE (value) != MEM)
total_bits = BITS_PER_WORD;
else
total_bits = GET_MODE_BITSIZE (GET_MODE (value));
/* Fetch successively less significant portions. */
if (GET_CODE (value) == CONST_INT)
part = GEN_INT (((unsigned HOST_WIDE_INT) (INTVAL (value))
@ -780,8 +790,7 @@ store_split_bit_field (op0, bitsize, bitpos, value, align)
lsb. Give extract_bit_field the value it needs (with
endianness compensation) to fetch the piece we want. */
part = extract_fixed_bit_field (word_mode, value, 0, thissize,
GET_MODE_BITSIZE (GET_MODE (value))
- bitsize + bitsdone,
total_bits - bitsize + bitsdone,
NULL_RTX, 1, align);
}
else
@ -1362,7 +1371,7 @@ extract_fixed_bit_field (tmode, op0, offset, bitsize, bitpos,
int unsignedp;
int align;
{
int total_bits;
int total_bits = BITS_PER_WORD;
enum machine_mode mode;
if (GET_CODE (op0) == SUBREG || GET_CODE (op0) == REG)
@ -1371,9 +1380,6 @@ extract_fixed_bit_field (tmode, op0, offset, bitsize, bitpos,
if (bitsize + bitpos > BITS_PER_WORD)
return extract_split_bit_field (op0, bitsize, bitpos,
unsignedp, align);
mode = GET_MODE (op0);
total_bits = GET_MODE_BITSIZE (mode);
}
else
{
@ -1414,6 +1420,8 @@ extract_fixed_bit_field (tmode, op0, offset, bitsize, bitpos,
plus_constant (XEXP (op0, 0), offset));
}
mode = GET_MODE (op0);
if (BYTES_BIG_ENDIAN)
{
/* BITPOS is the distance between our msb and that of OP0.