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-rw-r--r--gcc/expmed.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c
index 54e51dc..5eea2ab 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -550,7 +550,10 @@ store_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize,
{
/* If I is 0, use the low-order word in both field and target;
if I is 1, use the next to lowest word; and so on. */
- unsigned int wordnum = (backwards ? nwords - i - 1 : i);
+ unsigned int wordnum = (backwards
+ ? GET_MODE_SIZE (fieldmode) / UNITS_PER_WORD
+ - i - 1
+ : i);
unsigned int bit_offset = (backwards
? MAX ((int) bitsize - ((int) i + 1)
* BITS_PER_WORD,