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-rw-r--r--gcc/ChangeLog6
-rw-r--r--gcc/expmed.c16
2 files changed, 17 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index baf96ff..702f8cc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-01-24 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
+
+ PR middle-end/19330
+ * expmed.c (extract_bit_field): Use adjust_address instead of
+ gen_lowpart when op0 is a MEM.
+
2005-01-24 Steven Bosscher <stevenb@suse.de>
* cfgexpand.c (expand_gimple_tailcall): Fix typo.
diff --git a/gcc/expmed.c b/gcc/expmed.c
index dcd77ac..47b3d0d 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -1158,12 +1158,18 @@ 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))
{
- op0 = gen_lowpart (imode, op0);
+ if (MEM_P (op0))
+ op0 = adjust_address (op0, imode, 0);
+ else
+ {
+ gcc_assert (imode != BLKmode);
+ 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);
+ /* 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);
+ }
}
}