--- Comment #9 from Jakub Jelinek <jakub at gcc dot> ---
(In reply to Segher Boessenkool from comment #8)
> Ah right, I had checking disabled.  Need more coffee I guess.

You don't really need to build the checking compiler for this though, it is
enough to put a breakpoint on that REGNO (x) line and debug_rtx (x) first.

> The insns I see are different:
> Trying 19, 20 -> 21:
>    19: r106:SI#0=0
>    20: r108:SI=zero_extend(r106:SI#0)
>    21: r109:SI=r108:SI 0>>0x8
>       REG_DEAD r108:SI
> (see insn 20); maybe the i3 in #c1 is already modified?

Likely, yes.  I've just done up and debug_rtx on the 3 insns passed to

> The #c5 patch is okay for trunk, thanks!


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