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| author | Dale Johannesen <dalej@apple.com> | 2005-11-15 00:45:55 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@gcc.gnu.org> | 2005-11-15 00:45:55 +0000 |
| commit | 69498c64a33688edbb9b8dcadb6c5025cebf61f5 (patch) | |
| tree | 43b1c5181891aeb6fa652c06e16dcee87285bf34 /gcc/expmed.c | |
| parent | 53acd3845fdae40c43ff3a0b813aa6cf5428205b (diff) | |
| download | gcc-69498c64a33688edbb9b8dcadb6c5025cebf61f5.zip gcc-69498c64a33688edbb9b8dcadb6c5025cebf61f5.tar.gz gcc-69498c64a33688edbb9b8dcadb6c5025cebf61f5.tar.bz2 | |
expmed.c (store_bit_field): Add offset unconditionally for memory targets.
2005-11-14 Dale Johannesen <dalej@apple.com>
* expmed.c (store_bit_field): Add offset unconditionally for
memory targets.
(extract_bit_field): Don't force extzv or extv operand into
a register if field is too big.
From-SVN: r106919
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 00172a3..632f24f 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -430,14 +430,11 @@ store_bit_field (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, || (offset * BITS_PER_UNIT % bitsize == 0 && MEM_ALIGN (op0) % GET_MODE_BITSIZE (fieldmode) == 0)))) { - if (GET_MODE (op0) != fieldmode) - { - if (MEM_P (op0)) - op0 = adjust_address (op0, fieldmode, offset); - else - op0 = simplify_gen_subreg (fieldmode, op0, GET_MODE (op0), - byte_offset); - } + if (MEM_P (op0)) + op0 = adjust_address (op0, fieldmode, offset); + else if (GET_MODE (op0) != fieldmode) + op0 = simplify_gen_subreg (fieldmode, op0, GET_MODE (op0), + byte_offset); emit_move_insn (op0, value); return value; } @@ -1410,6 +1407,11 @@ extract_bit_field (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, xbitpos = bitnum % unit; xop0 = adjust_address (xop0, bestmode, xoffset); + /* Make sure register is big enough for the whole field. */ + if (xoffset * BITS_PER_UNIT + unit + < offset * BITS_PER_UNIT + bitsize) + goto extzv_loses; + /* Fetch it to a register in that size. */ xop0 = force_reg (bestmode, xop0); @@ -1539,6 +1541,11 @@ extract_bit_field (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, xbitpos = bitnum % unit; xop0 = adjust_address (xop0, bestmode, xoffset); + /* Make sure register is big enough for the whole field. */ + if (xoffset * BITS_PER_UNIT + unit + < offset * BITS_PER_UNIT + bitsize) + goto extv_loses; + /* Fetch it to a register in that size. */ xop0 = force_reg (bestmode, xop0); |