[Bug rtl-optimization/71022] GCC prefers register moves over move immediate

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue May 10 09:13:00 GMT 2016


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71022

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-05-10
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
IRA might choose to do this as part of life-range splitting/shortening.  Note
that reg-reg moves may be cheaper code-size wise (like on CISC archs with
non-fixed insn lengths).  RTL cost should tell you, of course.


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