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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expmed.c | 6 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8af4967..b12b4659 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2013-02-03 Richard Sandiford <rdsandiford@googlemail.com> + + * expmed.c (extract_bit_field_1): Pass the full width of the + structure to get_best_reg_extraction_insn. + 2013-02-01 David Edelsohn <dje.gcc@gmail.com> PR target/54601 diff --git a/gcc/expmed.c b/gcc/expmed.c index da37e6b..4a6ddb0 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1569,7 +1569,11 @@ extract_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, enum extraction_pattern pattern = unsignedp ? EP_extzv : EP_extv; extraction_insn extv; if (!MEM_P (op0) - && get_best_reg_extraction_insn (&extv, pattern, bitnum + bitsize, + /* ??? We could limit the structure size to the part of OP0 that + contains the field, with appropriate checks for endianness + and TRULY_NOOP_TRUNCATION. */ + && get_best_reg_extraction_insn (&extv, pattern, + GET_MODE_BITSIZE (GET_MODE (op0)), tmode)) { rtx result = extract_bit_field_using_extv (&extv, op0, bitsize, bitnum, |