I got this compiling a qt file
../../include/QtGui/private/../../../src/gui/painting/qdrawhelper_mmx_p.h: In
function ‘void comp_func_SourceAtop(uint*, const uint*, int, uint) [with MM =
QMMXIntrinsics, uint = unsigned int]’:
../../include/QtGui/private/../../../src/gui/painting/qdrawhelper_mmx_p.h:540:1:
internal compiler error: in simplify_binary_operation_1, at simplify-rtx.c:3022

I attach .ii. Be aware that the problem can only be reproduce when compiled
both -O2 and -g


-- 
           Summary: internal compiler error: in simplify_binary_operation_1
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gcc at dpinol dot com
 GCC build triplet: i686-gnu-linux
  GCC host triplet: i686-gnu-linux
GCC target triplet: i686-gnu-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43308

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