Issue Description:

Consider the following test program:

class Test {
        class func printMemory(ptr: UnsafePointer<Int>) {

                print("At memory:\(ptr)")
        }
}

var arr: [[Int]] = [
                        [0,1,2,3,4],
                        [0,1,2],
                        [0]
]

Test.printMemory(ptr: &arr[0][0])
Test.printMemory(ptr: &arr[0][1])
Test.printMemory(ptr: &arr[0][2])
Test.printMemory(ptr: &arr[1][0])

When run on either OS X or Linux using the REPL, the results are as follows:

babt@Swift-TestVM:~/test/Sources$ swift test.swift
At memory:0x00007ffc55142838
At memory:0x00007ffc55142838
At memory:0x00007ffc55142838
At memory:0x00007ffc55142838

Notice that the printed addresses are all the same.

When running on either OS X or Linux after compiling, the following results are achieved...

babt@Swift-TestVM:~/test/Sources$ swiftc test.swift
babt@Swift-TestVM:~/test/Sources$ ./test
At memory:0x00007ffd8550bb40
At memory:0x00007ffd8550bb30
At memory:0x00007ffd8550bb20
At memory:0x00007ffd8550bb10

This is what I would've expected the results to be.