[Bug target/52698] -maddress-mode=long doesn't work

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52698

Uros Bizjak <ubizjak at gmail dot com> changed:

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--- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2012-03-25 22:28:23 UTC ---
Created attachment 26987
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26987
Patch that teaches x86 how to fix invalid reload address

Attached patch teaches x86 how to fix invalid reload address.

However, I'd say that there is a problem within reload pass, where reload
creates partially reloaded address, comprising strict and non-strict registers
(see comment #4). This address is passed to ix86_legitimate_address_p in strict
mode, and gets rejected.  Reload then bravely pushes every component into a
separate registers (3 in this case). This action creates even more invalid
address, also violating #define MAX_REGS_PER_ADDRESS 2.