[Bug target/58595] internal compiler error: in gen_movsi when compiling on arm some files of lttng-tools with -fPIE

[meadori at codesourcery dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58595

--- Comment #5 from Meador Inge <meadori at codesourcery dot com> ---
Created attachment 32253
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32253&action=edit
Work in progress patch.

Yeah, I am came to the same conclusion after making that comment that removing
the asserts is a bogus approach.

Although, my follow up approach is a little different.  I was trying to
replicate what we currently have in the 'movsi' pattern (see attached).  This
seems to work for the basic tests I have tried.  This patch is lightly tested,
is obviously in need of cleanup (since it duplicates code), and doesn't cover
the thumb case.  I am just posting it for discussion purposes.

Are we guaranteed to always have the const plus form?  Or do we need to be more
general like in the patch I attached?