[Bug rtl-optimization/49847] [4.7/4.8/4.9 Regression] NULL deref in fold_rtx (prev_insn_cc0 == NULL)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49847

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

           What    |Removed                     |Added
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                 CC|richard.guenther at gmail dot com  |rguenth at gcc dot gnu.org,
                   |                            |stevenb.gcc at gmail dot com

--- Comment #27 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yeah, not sure how non-cc0 targets avoid this situation.  I wonder if there is
a suitable pre-reload pass to do such reloading (I'm not sure teaching reload
to do that is the best idea ...)