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expmed.c (extract_bit_field): When extracting from non-integer mode...

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* expmed.c (extract_bit_field): When extracting from non-integer mode,
	force a SUBREG into a register because we may be taking a further
	SUBREG of it.

From-SVN: r91361
This commit is contained in:
Richard Kenner 2004-11-27 01:01:12 +00:00 committed by Richard Kenner
parent 23d5143200
commit 360e353587
2 changed files with 12 additions and 7 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2004-11-26 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* expmed.c (extract_bit_field): When extracting from non-integer mode,
force a SUBREG into a register because we may be taking a further
SUBREG of it.
2004-11-27 Di-an Jan <dianj@freeshell.org>
* doc/contrib.texi (Tim Josling): Remove nesting quotation marks.

13
gcc/expmed.c
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@ -1163,13 +1163,12 @@ extract_bit_field (rtx str_rtx, unsigned HOST_WIDE_INT bitsize,
enum machine_mode imode = int_mode_for_mode (GET_MODE (op0));
if (imode != GET_MODE (op0))
{
if (MEM_P (op0))
op0 = adjust_address (op0, imode, 0);
else
{
gcc_assert (imode != BLKmode);
op0 = gen_lowpart (imode, op0);
}
op0 = gen_lowpart (imode, op0);
/* If we got a SUBREG, force it into a register since we aren't going
to be able to do another SUBREG on it. */
if (GET_CODE (op0) == SUBREG)
op0 = force_reg (imode, op0);
}
}