diff options
| author | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-06-04 07:41:18 +0000 |
|---|---|---|
| committer | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-06-04 07:41:18 +0000 |
| commit | 8744b4c5b5a838296875f5a4d5f2274048305388 (patch) | |
| tree | 187f2f0be4d237ebc45c7825079b5c251948b0c1 /gcc/expmed.c | |
| parent | d3769f59c0ee782e5f6b2e9b3e2735c648c33801 (diff) | |
| download | gcc-8744b4c5b5a838296875f5a4d5f2274048305388.tar.gz | |
* expmed.c (extract_bit_field_1): In the larger-than-a-word case, factor
out the processing order as in store_bit_field_1.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199637 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index daadd3def5d..79f3424961d 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1486,6 +1486,7 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, This is because the most significant word is the one which may be less than full. */ + unsigned int backwards = WORDS_BIG_ENDIAN; unsigned int nwords = (bitsize + (BITS_PER_WORD - 1)) / BITS_PER_WORD; unsigned int i; rtx last; @@ -1503,13 +1504,14 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, if I is 1, use the next to lowest word; and so on. */ /* Word number in TARGET to use. */ unsigned int wordnum - = (WORDS_BIG_ENDIAN + = (backwards ? GET_MODE_SIZE (GET_MODE (target)) / UNITS_PER_WORD - i - 1 : i); /* Offset from start of field in OP0. */ - unsigned int bit_offset = (WORDS_BIG_ENDIAN - ? MAX (0, ((int) bitsize - ((int) i + 1) - * (int) BITS_PER_WORD)) + unsigned int bit_offset = (backwards + ? MAX ((int) bitsize - ((int) i + 1) + * BITS_PER_WORD, + 0) : (int) i * BITS_PER_WORD); rtx target_part = operand_subword (target, wordnum, 1, VOIDmode); rtx result_part @@ -1541,7 +1543,7 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, for (i = nwords; i < total_words; i++) emit_move_insn (operand_subword (target, - WORDS_BIG_ENDIAN ? total_words - i - 1 : i, + backwards ? total_words - i - 1 : i, 1, VOIDmode), const0_rtx); } |