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.