diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 15 |
1 files changed, 9 insertions, 6 deletions
@@ -2175,19 +2175,22 @@ emit_group_load_1 (rtx *tmps, rtx dst, rtx orig_src, tree type, int ssize) { unsigned int slen = GET_MODE_SIZE (GET_MODE (src)); unsigned int slen0 = GET_MODE_SIZE (GET_MODE (XEXP (src, 0))); + unsigned int elt = bytepos / slen0; + unsigned int subpos = bytepos % slen0; - if ((bytepos == 0 && bytelen == slen0) - || (bytepos != 0 && bytepos + bytelen <= slen)) + if (subpos + bytelen <= slen0) { /* The following assumes that the concatenated objects all have the same size. In this case, a simple calculation can be used to determine the object and the bit field to be extracted. */ - tmps[i] = XEXP (src, bytepos / slen0); - if (! CONSTANT_P (tmps[i]) - && (!REG_P (tmps[i]) || GET_MODE (tmps[i]) != mode)) + tmps[i] = XEXP (src, elt); + if (subpos != 0 + || subpos + bytelen != slen0 + || (!CONSTANT_P (tmps[i]) + && (!REG_P (tmps[i]) || GET_MODE (tmps[i]) != mode))) tmps[i] = extract_bit_field (tmps[i], bytelen * BITS_PER_UNIT, - (bytepos % slen0) * BITS_PER_UNIT, + subpos * BITS_PER_UNIT, 1, NULL_RTX, mode, mode, false); } else |