[Bug c/20284] New: CCP still doesn't look inside initializers for structures

[franck dot bui-huu at innova-card dot com]

GCC can't optimise this simple code:

static const struct my_struct {
    int a;
    int b;
} foo = { .a = 2, .b = 3};

int main(int argc, char **argv)
{
int volatile tmp;

tmp = foo.a * foo.b;

return 0;
}

GCC generates a "mul" opcode whereas every things are constant.

-- 
           Summary: CCP still doesn't look inside initializers for
                    structures
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: franck dot bui-huu at innova-card dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20284