(store_split_bit_field): Don't assume the alignment of VALUE is the

same as the record.

From-SVN: r12017

diff --git a/gcc/expmed.c b/gcc/expmed.c
index 955c4163177be4af342b090ff276c80b9124fbe0..be27f855ae84011130696f2f85cc2a773e5cac93 100644 (file)
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -781,10 +781,19 @@ store_split_bit_field (op0, bitsize, bitpos, value, align)
          else
            /* The args are chosen so that the last part includes the
               lsb.  Give extract_bit_field the value it needs (with
-              endianness compensation) to fetch the piece we want.  */
-           part = extract_fixed_bit_field (word_mode, value, 0, thissize,
-                                           total_bits - bitsize + bitsdone,
-                                           NULL_RTX, 1, align);
+              endianness compensation) to fetch the piece we want.
+
+              ??? We have no idea what the alignment of VALUE is, so
+              we have to use a guess.  */
+           part
+             = extract_fixed_bit_field
+               (word_mode, value, 0, thissize,
+                total_bits - bitsize + bitsdone, NULL_RTX, 1,
+                GET_MODE (value) == VOIDmode
+                ? UNITS_PER_WORD
+                : (GET_MODE (value) == BLKmode
+                   ? 1
+                   : GET_MODE_ALIGNMENT (GET_MODE (value)) / BITS_PER_UNIT));
        }
       else
        {
@@ -794,8 +803,14 @@ store_split_bit_field (op0, bitsize, bitpos, value, align)
                             >> bitsdone)
                            & (((HOST_WIDE_INT) 1 << thissize) - 1));
          else
-           part = extract_fixed_bit_field (word_mode, value, 0, thissize,
-                                           bitsdone, NULL_RTX, 1, align);
+           part
+             = extract_fixed_bit_field
+               (word_mode, value, 0, thissize, bitsdone, NULL_RTX, 1,
+                GET_MODE (value) == VOIDmode
+                ? UNITS_PER_WORD
+                : (GET_MODE (value) == BLKmode
+                   ? 1
+                   : GET_MODE_ALIGNMENT (GET_MODE (value)) / BITS_PER_UNIT));
        }
 
       /* If OP0 is a register, then handle OFFSET here.