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Date: Wed, 28 May 2008 00:04:00 -0000
From: Andy H <hutchinsonandy@aim.com>
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To: GCC Development <gcc@gcc.gnu.org>, rdsandiford@googlemail.com
CC: Andy H <hutchinsonandy@aim.com>
Subject: Re: Help with reload and naked constant  sum  causing ICE
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> If L_R_A does nothing with it,
> the normal reload handling will first try:
>
>   (const:HI (plus:HI (symbol_ref:HI ("chk_fail_buf") (const_int 2))))
>   

This worked just as your described after I added test of 
reg_equiv_constant[] inside L_R_A .

So I guess that looks like  the fix for bug I posted.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34641

To summarize

LEGITIMIZE_RELOAD_ADDRESS should now always check reg_equiv_constant
before it trying to do any push_reload of register.

Thanks for help!