Hi, Andrew

Thanks for this series of patches to improve do_store_flag.  Unfortunately
this specific patch in the series has caused a bootstrap failure on
powerpc-aix.  I bisected this failure to this specific patch. Note that I
am building as 32 bit, so this could be a specific issue about bit size.

	* expr.cc (fold_single_bit_test): Rename to ...
	(expand_single_bit_test): This and expand directly.
	(do_store_flag): Update for the rename function.


Thanks, David