- case SIGN_EXTRACT:
- df_uses_record (collection_rec, &XEXP (dst, 0),
- DF_REF_REG_USE, bb, insn, DF_REF_READ_WRITE);
- df_uses_record (collection_rec, &XEXP (dst, 1),
- DF_REF_REG_USE, bb, insn, flags);
- df_uses_record (collection_rec, &XEXP (dst, 2),
- DF_REF_REG_USE, bb, insn, flags);
- dst = XEXP (dst, 0);
+ {
+ if (GET_CODE (XEXP (dst, 1)) == CONST_INT
+ && GET_CODE (XEXP (dst, 2)) == CONST_INT)
+ {
+ width = INTVAL (XEXP (dst, 1));
+ offset = INTVAL (XEXP (dst, 2));
+ mode = GET_MODE (dst);
+ df_uses_record (DF_REF_EXTRACT, collection_rec, &XEXP (dst, 0),
+ DF_REF_REG_USE, bb, insn_info,
+ DF_REF_READ_WRITE | DF_REF_ZERO_EXTRACT,
+ width, offset, mode);
+ }
+ else
+ {
+ df_uses_record (cl, collection_rec, &XEXP (dst, 1),
+ DF_REF_REG_USE, bb, insn_info, flags,
+ width, offset, mode);
+ df_uses_record (cl, collection_rec, &XEXP (dst, 2),
+ DF_REF_REG_USE, bb, insn_info, flags,
+ width, offset, mode);
+ df_uses_record (cl, collection_rec, &XEXP (dst, 0),
+ DF_REF_REG_USE, bb, insn_info,
+ DF_REF_READ_WRITE | DF_REF_ZERO_EXTRACT,
+ width, offset, mode);
+ }
+
+ }