Linux/ia64 failed to bootstrap

[Eric Botcazou]

> fold-const tries to combine the tree flag checks but ends up treating
> them as 32-bit values rather than 1-bit values.

Yes. It appears that you really need to strip every NOP_EXPRs around 
bitfields to get expr.c:get_inner_reference() to return the real bitsize.

The proposed patch is here:
http://gcc.gnu.org/ml/gcc-patches/2003-06/msg03134.html

My apologies for the breakage and thanks for the help.

-- 
Eric Botcazou