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expmed.c (extract_bit_field_1): Pass the full width of the structure to get_best_reg_extraction_insn.

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gcc/
	* expmed.c (extract_bit_field_1): Pass the full width of the
	structure to get_best_reg_extraction_insn.

From-SVN: r195692
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Richard Sandiford 2013-02-03 11:13:51 +00:00 committed by Richard Sandiford
parent 5031121c43
commit c0a8a3e6fd
2 changed files with 10 additions and 1 deletions
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gcc/ChangeLog
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@ -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

6
gcc/expmed.c
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@ -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,