[Bug middle-end/49721] convert_memory_address_addr_space may generate invalid new insns

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49721

--- Comment #22 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-03 14:48:09 UTC ---
(In reply to comment #17)
> H.J., I agree with what you write in comment 16.  But unless we are sure that
> the problematic composition will never be generated (e.g. by ivopts), we cannot
> afford that.

My understanding is ivopts only works on ptr_mode (see PR 47383).