diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/expmed.c | 9 |
2 files changed, 12 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8e52cfc..9481d68 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-07-03 Andrew Haley <aph@redhat.com> + + * expmed.c (store_fixed_bit_field): Don't use a mode bigger than + the mode of the memory location. + 2001-07-09 Bo Thorsen <bo@suse.co.uk> * config/i386/unix.h (ASM_OUTPUT_MI_THUNK): Fix x86-64 vtable support. diff --git a/gcc/expmed.c b/gcc/expmed.c index 0a9b41c..d334f6d 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -673,10 +673,15 @@ store_fixed_bit_field (op0, offset, bitsize, bitpos, value, struct_align) { /* Get the proper mode to use for this field. We want a mode that includes the entire field. If such a mode would be larger than - a word, we won't be doing the extraction the normal way. */ + a word, we won't be doing the extraction the normal way. + We don't want a mode bigger than the destination. */ + mode = GET_MODE (op0); + if (GET_MODE_BITSIZE (mode) == 0 + || GET_MODE_BITSIZE (mode) > GET_MODE_BITSIZE (word_mode)) + mode = word_mode; mode = get_best_mode (bitsize, bitpos + offset * BITS_PER_UNIT, - struct_align, word_mode, + struct_align, mode, GET_CODE (op0) == MEM && MEM_VOLATILE_P (op0)); if (mode == VOIDmode) |