[Bug target/47744] [x32] ICE: in reload_cse_simplify_operands, at postreload.c:403

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47744

--- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> 2011-07-17 20:26:47 UTC ---
(In reply to comment #13)
> Looking at the example in Comment #0, RTX expansion pass generates:
> 
> ;; D.2794_77 = &q + D.2793_76;
> 
> (insn 84 83 85 (parallel [
>             (set (reg:DI 173)
>                 (plus:DI (reg/f:DI 54 virtual-stack-vars)
>                     (const_int -160 [0xffffffffffffff60])))
>             (clobber (reg:CC 17 flags))
>         ]) pr47744.c:5 -1
>      (nil))
> 
> Why 64bit virtual register to hold &q _address_?

I guess it is because we use 64bit Pmode for x32.