Allow physregs to occur in the dag with multiple types.  Though I don't likethis, it is a requirement on PPC, which can have an f32 value in r3 at onepoint in a function and a f64 value in r3 at another point.  :(
Allow physregs to occur in the dag with multiple types.  Though I don't likethis, it is a requirement on PPC, which can have an f32 value in r3 at onepoint in a function and a f64 value in r3 at another point.  :(

This fixes compilation of mesa


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@23161 91177308-0d34-0410-b5e6-96231b3b80d8

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