Hi,
Subsequent to the following discussion

http://gcc.gnu.org/ml/gcc/2007-07/msg00878.html

I have the following patch. It gave no regressions with the GCC
testsuite on my port ( private port) and a proprietary testsuite.

Thanks,
Pranav

ChangeLog
        * lower-subreg.c (remove_retval_note): Remove REG_EQUAL note too
        if it exists in an insn containing REG_RETVAL note.