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r192741 - in /trunk/gcc: ChangeLog expmed.c
- From: rsandifo at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Tue, 23 Oct 2012 19:17:36 -0000
- Subject: r192741 - in /trunk/gcc: ChangeLog expmed.c
Author: rsandifo
Date: Tue Oct 23 19:17:35 2012
New Revision: 192741
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192741
Log:
gcc/
* expmed.c (store_split_bit_field): Update the calls to
extract_fixed_bit_field. In the big-endian case, always
use the mode of OP0 to count the number of significant bits.
(extract_bit_field_1): Remove unit, offset, bitpos and
byte_offset from the outermost scope. Express conditions in terms
of bitnum rather than offset, bitpos and byte_offset. Move the
computation of MODE1 to the block that needs it. Use MODE unless
the TMODE-based mode_for_size calculation succeeds. Split the
plain move cases into two, one for memory accesses and one for
register accesses. Generalize the memory case, freeing it from
the old register-based endian checks. Move the INT_MODE calculation
above the code that needs it. Use simplify_gen_subreg to handle
multiword OP0s. If the field still spans several words, pass it
directly to extract_split_bit_field. Assume after that point
that both targets and register sources fit within a word.
Replace x-prefixed variables with non-prefixed forms.
Compute the bitpos for ext(z)v register operands directly in the
chosen unit size, rather than going through an intermediate
BITS_PER_WORD unit size. Simplify the containment check
used when forcing OP0 into a register. Update the call to
extract_fixed_bit_field.
(extract_fixed_bit_field): Replace the bitpos and offset parameters
with a single bitnum parameter, of the same form as extract_bit_field.
Assume that OP0 contains the full field. Simplify the memory offset
calculation and containment check for volatile bitfields. Make the
offset explicit when volatile bitfields force a misaligned access.
Remove WARNED and fix long lines. Assert that the processed OP0
has an integral mode.
(store_split_bit_field): Update the call to store_fixed_bit_field.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/expmed.c