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expmed.c (store_bit_field): Update to patch from 2001-08-27: move adjustment of bitpos instead.

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* expmed.c (store_bit_field): Update to patch from 2001-08-27:
        move adjustment of bitpos instead.

From-SVN: r45338
This commit is contained in:
Roman Zippel 2001-08-31 22:54:19 +00:00 committed by Richard Henderson
parent 4504a65546
commit 57bfa49ae1
2 changed files with 14 additions and 9 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2001-08-30 Roman Zippel <zippel@linux-m68k.org>
* expmed.c (store_bit_field): Update to patch from 2001-08-27:
move adjustment of bitpos instead.
2001-08-31 Zack Weinberg <zack@codesourcery.com>
* function.c: Remove all_functions. Make outer_function_chain

18
gcc/expmed.c
View File

@ -330,14 +330,6 @@ store_bit_field (str_rtx, bitsize, bitnum, fieldmode, value, align, total_size)
op0 = SUBREG_REG (op0);
}
/* If OP0 is a register, BITPOS must count within a word.
But as we have it, it counts within whatever size OP0 now has.
On a bigendian machine, these are not the same, so convert. */
if (BYTES_BIG_ENDIAN
&& GET_CODE (op0) != MEM
&& unit > GET_MODE_BITSIZE (GET_MODE (op0)))
bitpos += unit - GET_MODE_BITSIZE (GET_MODE (op0));
value = protect_from_queue (value, 0);
if (flag_force_mem)
@ -350,7 +342,7 @@ store_bit_field (str_rtx, bitsize, bitnum, fieldmode, value, align, total_size)
done with a simple store. For targets that support fast unaligned
memory, any naturally sized, unit aligned field can be done directly. */
if (bitnum == 0
if (bitpos == 0
&& bitsize == GET_MODE_BITSIZE (fieldmode)
&& (GET_CODE (op0) != MEM
? (GET_MODE_SIZE (fieldmode) >= UNITS_PER_WORD
@ -401,6 +393,14 @@ store_bit_field (str_rtx, bitsize, bitnum, fieldmode, value, align, total_size)
}
}
/* If OP0 is a register, BITPOS must count within a word.
But as we have it, it counts within whatever size OP0 now has.
On a bigendian machine, these are not the same, so convert. */
if (BYTES_BIG_ENDIAN
&& GET_CODE (op0) != MEM
&& unit > GET_MODE_BITSIZE (GET_MODE (op0)))
bitpos += unit - GET_MODE_BITSIZE (GET_MODE (op0));
/* Storing an lsb-aligned field in a register
can be done with a movestrict instruction. */