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riscv-gcc-1
Commit f916eeb6 by Nick Clifton Committed by Nick Clifton
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Add comment provided by Jim Wilson. 

From-SVN: r22560
parent 80db34d8
Showing with 8 additions and 0 deletions
gcc/ChangeLog
Wed Sep 23 16:22:01 1998 Nick Clifton <nickc@cygnus.com>
* expmed.c (extract_bit_field): Add comment from Jim Wilson.
Wed Sep 23 13:26:02 1998 Richard Henderson <rth@cygnus.com> Wed Sep 23 13:26:02 1998 Richard Henderson <rth@cygnus.com>
* alpha.c (get_aligned_mem): Revert Sep 20 change. * alpha.c (get_aligned_mem): Revert Sep 20 change.
......
gcc/expmed.c
...@@ -983,6 +983,10 @@ extract_bit_field (str_rtx, bitsize, bitnum, unsignedp, ...@@ -983,6 +983,10 @@ extract_bit_field (str_rtx, bitsize, bitnum, unsignedp,
&& ((bitsize >= BITS_PER_WORD && bitsize == GET_MODE_BITSIZE (mode) && ((bitsize >= BITS_PER_WORD && bitsize == GET_MODE_BITSIZE (mode)
&& bitpos % BITS_PER_WORD == 0) && bitpos % BITS_PER_WORD == 0)
|| (mode_for_size (bitsize, GET_MODE_CLASS (tmode), 0) != BLKmode || (mode_for_size (bitsize, GET_MODE_CLASS (tmode), 0) != BLKmode
/* ??? The big endian test here is wrong. This is correct
if the value is in a register, and if mode_for_size is not
the same mode as op0. This causes us to get unnecessarily
inefficient code from the Thumb port when -mbig-endian. */
&& (BYTES_BIG_ENDIAN && (BYTES_BIG_ENDIAN
? bitpos + bitsize == BITS_PER_WORD ? bitpos + bitsize == BITS_PER_WORD
: bitpos == 0)))) : bitpos == 0))))
......
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