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| author | Jim Wilson <wilson@gcc.gnu.org> | 1994-01-24 16:24:18 -0800 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1994-01-24 16:24:18 -0800 |
| commit | 9033081d38c855d7cf191d2b111c9e410297d5ca (patch) | |
| tree | 6e93201056b7b67d8e37669e4c71b3aaf0e618d4 /gcc/expmed.c | |
| parent | 648a09eed9f2b429e36353da9f603e79caa6c18e (diff) | |
| download | gcc-9033081d38c855d7cf191d2b111c9e410297d5ca.zip gcc-9033081d38c855d7cf191d2b111c9e410297d5ca.tar.gz gcc-9033081d38c855d7cf191d2b111c9e410297d5ca.tar.bz2 | |
(store_split_bit_field): For BYTES_BIG_ENDIAN, only
pad on left if value not in memory.
From-SVN: r6429
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 4c06fb4..f20fb18 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -721,11 +721,19 @@ store_split_bit_field (op0, bitsize, bitpos, value, align) >> (bitsize - bitsdone - thissize)) & (((HOST_WIDE_INT) 1 << thissize) - 1)); else - /* The args are chosen so that the last part - includes the lsb. */ - part = extract_fixed_bit_field (word_mode, value, 0, thissize, - BITS_PER_WORD - bitsize + bitsdone, - NULL_RTX, 1, align); + { + /* The args are chosen so that the last part + includes the lsb. */ + int bit_offset = 0; + /* If the value isn't in memory, then it must be right aligned + if a register, so skip past the padding on the left. If it + is in memory, then there is no padding on the left. */ + if (GET_CODE (value) != MEM) + bit_offset = BITS_PER_WORD - bitsize; + part = extract_fixed_bit_field (word_mode, value, 0, thissize, + bit_offset + bitsdone, + NULL_RTX, 1, align); + } #else /* Fetch successively more significant portions. */ if (GET_CODE (value) == CONST_INT) |