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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2013-02-03 11:13:51 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2013-02-03 11:13:51 +0000 |
| commit | c0a8a3e6fd651e4c835ca75864390c92efe9b9b7 (patch) | |
| tree | efbb771b3a388d61f8226c7ed36bf91657873d70 | |
| parent | 5031121c4390a074d77907f702f29d070a317302 (diff) | |
| download | gcc-c0a8a3e6fd651e4c835ca75864390c92efe9b9b7.tar.gz | |
expmed.c (extract_bit_field_1): Pass the full width of the structure to get_best_reg_extraction_insn.
gcc/
* expmed.c (extract_bit_field_1): Pass the full width of the
structure to get_best_reg_extraction_insn.
From-SVN: r195692
| -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 8af4967c718..b12b46590c6 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 da37e6b8185..4a6ddb06b11 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, |