REGRESSION: reload ice

[Gabriel Dos Reis]

While building the program found at

	http://www.gang.umass.edu/software/cmclab/

g++ bombs with:

  Surface.C: In member function `void 
     geom::kernel::Surface::compute_gaussian_curvature()': 
  Surface.C:167: Unable to generate reloads for:
  (insn 3103 3100 3104 (set (reg:SF 8 st(0) [521])
	  (float_truncate:SF (reg:DF 8 st(0) [513]))) 112 {truncdfsf2_3}
     (insn_list 3026 (nil))
      (expr_list:REG_DEAD (reg:DF 8 st(0) [513])
	  (nil)))
  Surface.C:167: Internal compiler error in find_reloads, at reload.c:3487

Same behaviour with both branch and mainline.  This happens on a
i686-pc-linux-gnu.

The preprocessed file is at

	http://www.cmla.ens-cachan.fr/~dosreis/gcc-ices/surface.ii

Thanks,

-- Gaby